Problem 13

Problem 


Work out the first ten digits of the sum of the following one-hundred 50-digit numbers.

37107287533902102798797998220837590246510135740250
46376937677490009712648124896970078050417018260538
74324986199524741059474233309513058123726617309629
91942213363574161572522430563301811072406154908250
23067588207539346171171980310421047513778063246676
89261670696623633820136378418383684178734361726757
28112879812849979408065481931592621691275889832738
44274228917432520321923589422876796487670272189318
47451445736001306439091167216856844588711603153276
70386486105843025439939619828917593665686757934951
62176457141856560629502157223196586755079324193331
64906352462741904929101432445813822663347944758178
92575867718337217661963751590579239728245598838407
58203565325359399008402633568948830189458628227828
80181199384826282014278194139940567587151170094390
35398664372827112653829987240784473053190104293586
86515506006295864861532075273371959191420517255829
71693888707715466499115593487603532921714970056938
54370070576826684624621495650076471787294438377604
53282654108756828443191190634694037855217779295145
36123272525000296071075082563815656710885258350721
45876576172410976447339110607218265236877223636045
17423706905851860660448207621209813287860733969412
81142660418086830619328460811191061556940512689692
51934325451728388641918047049293215058642563049483
62467221648435076201727918039944693004732956340691
15732444386908125794514089057706229429197107928209
55037687525678773091862540744969844508330393682126
18336384825330154686196124348767681297534375946515
80386287592878490201521685554828717201219257766954
78182833757993103614740356856449095527097864797581
16726320100436897842553539920931837441497806860984
48403098129077791799088218795327364475675590848030
87086987551392711854517078544161852424320693150332
59959406895756536782107074926966537676326235447210
69793950679652694742597709739166693763042633987085
41052684708299085211399427365734116182760315001271
65378607361501080857009149939512557028198746004375
35829035317434717326932123578154982629742552737307
94953759765105305946966067683156574377167401875275
88902802571733229619176668713819931811048770190271
25267680276078003013678680992525463401061632866526
36270218540497705585629946580636237993140746255962
24074486908231174977792365466257246923322810917141
91430288197103288597806669760892938638285025333403
34413065578016127815921815005561868836468420090470
23053081172816430487623791969842487255036638784583
11487696932154902810424020138335124462181441773470
63783299490636259666498587618221225225512486764533
67720186971698544312419572409913959008952310058822
95548255300263520781532296796249481641953868218774
76085327132285723110424803456124867697064507995236
37774242535411291684276865538926205024910326572967
23701913275725675285653248258265463092207058596522
29798860272258331913126375147341994889534765745501
18495701454879288984856827726077713721403798879715
38298203783031473527721580348144513491373226651381
34829543829199918180278916522431027392251122869539
40957953066405232632538044100059654939159879593635
29746152185502371307642255121183693803580388584903
41698116222072977186158236678424689157993532961922
62467957194401269043877107275048102390895523597457
23189706772547915061505504953922979530901129967519
86188088225875314529584099251203829009407770775672
11306739708304724483816533873502340845647058077308
82959174767140363198008187129011875491310547126581
97623331044818386269515456334926366572897563400500
42846280183517070527831839425882145521227251250327
55121603546981200581762165212827652751691296897789
32238195734329339946437501907836945765883352399886
75506164965184775180738168837861091527357929701337
62177842752192623401942399639168044983993173312731
32924185707147349566916674687634660915035914677504
99518671430235219628894890102423325116913619626622
73267460800591547471830798392868535206946944540724
76841822524674417161514036427982273348055556214818
97142617910342598647204516893989422179826088076852
87783646182799346313767754307809363333018982642090
10848802521674670883215120185883543223812876952786
71329612474782464538636993009049310363619763878039
62184073572399794223406235393808339651327408011116
66627891981488087797941876876144230030984490851411
60661826293682836764744779239180335110989069790714
85786944089552990653640447425576083659976645795096
66024396409905389607120198219976047599490197230297
64913982680032973156037120041377903785566085089252
16730939319872750275468906903707539413042652315011
94809377245048795150954100921645863754710598436791
78639167021187492431995700641917969777599028300699
15368713711936614952811305876380278410754449733078
40789923115535562561142322423255033685442488917353
44889911501440648020369068063960672322193204149535
41503128880339536053299340368006977710650566631954
81234880673210146739058568557934581403627822703280
82616570773948327592232845941706525094512325230608
22918802058777319719839450180888072429661980811197
77158542502016545090413245809786882778948721859617
72107838435069186155435662884062257473692284509516
20849603980134001723930671666823555245252804609722

53503534226472524250874054075591789781264330331690


Code

#include <iostream>
#include <stdlib.h>
using namespace std;

int main()
{
    string str[] = {"37107287533902102798797998220837590246510135740250",
                "46376937677490009712648124896970078050417018260538",
                "74324986199524741059474233309513058123726617309629",
                "91942213363574161572522430563301811072406154908250",
                "23067588207539346171171980310421047513778063246676",
                "89261670696623633820136378418383684178734361726757",
                "28112879812849979408065481931592621691275889832738",
                "44274228917432520321923589422876796487670272189318",
                "47451445736001306439091167216856844588711603153276",
                "70386486105843025439939619828917593665686757934951",
                "62176457141856560629502157223196586755079324193331",
                "64906352462741904929101432445813822663347944758178",
                "92575867718337217661963751590579239728245598838407",
                "58203565325359399008402633568948830189458628227828",
                "80181199384826282014278194139940567587151170094390",
                "35398664372827112653829987240784473053190104293586",
                "86515506006295864861532075273371959191420517255829",
                "71693888707715466499115593487603532921714970056938",
                "54370070576826684624621495650076471787294438377604",
                "53282654108756828443191190634694037855217779295145",
                "36123272525000296071075082563815656710885258350721",
                "45876576172410976447339110607218265236877223636045",
                "17423706905851860660448207621209813287860733969412",
                "81142660418086830619328460811191061556940512689692",
                "51934325451728388641918047049293215058642563049483",
                "62467221648435076201727918039944693004732956340691",
                "15732444386908125794514089057706229429197107928209",
                "55037687525678773091862540744969844508330393682126",
                "18336384825330154686196124348767681297534375946515",
                "80386287592878490201521685554828717201219257766954",
                "78182833757993103614740356856449095527097864797581",
                "16726320100436897842553539920931837441497806860984",
                "48403098129077791799088218795327364475675590848030",
                "87086987551392711854517078544161852424320693150332",
                "59959406895756536782107074926966537676326235447210",
                "69793950679652694742597709739166693763042633987085",
                "41052684708299085211399427365734116182760315001271",
                "65378607361501080857009149939512557028198746004375",
                "35829035317434717326932123578154982629742552737307",
                "94953759765105305946966067683156574377167401875275",
                "88902802571733229619176668713819931811048770190271",
                "25267680276078003013678680992525463401061632866526",
                "36270218540497705585629946580636237993140746255962",
                "24074486908231174977792365466257246923322810917141",
                "91430288197103288597806669760892938638285025333403",
                "34413065578016127815921815005561868836468420090470",
                "23053081172816430487623791969842487255036638784583",
                "11487696932154902810424020138335124462181441773470",
                "63783299490636259666498587618221225225512486764533",
                "67720186971698544312419572409913959008952310058822",
                "95548255300263520781532296796249481641953868218774",
                "76085327132285723110424803456124867697064507995236",
                "37774242535411291684276865538926205024910326572967",
                "23701913275725675285653248258265463092207058596522",
                "29798860272258331913126375147341994889534765745501",
                "18495701454879288984856827726077713721403798879715",
                "38298203783031473527721580348144513491373226651381",
                "34829543829199918180278916522431027392251122869539",
                "40957953066405232632538044100059654939159879593635",
                "29746152185502371307642255121183693803580388584903",
                "41698116222072977186158236678424689157993532961922",
                "62467957194401269043877107275048102390895523597457",
                "23189706772547915061505504953922979530901129967519",
                "86188088225875314529584099251203829009407770775672",
                "11306739708304724483816533873502340845647058077308",
                "82959174767140363198008187129011875491310547126581",
                "97623331044818386269515456334926366572897563400500",
                "42846280183517070527831839425882145521227251250327",
                "55121603546981200581762165212827652751691296897789",
                "32238195734329339946437501907836945765883352399886",
                "75506164965184775180738168837861091527357929701337",
                "62177842752192623401942399639168044983993173312731",
                "32924185707147349566916674687634660915035914677504",
                "99518671430235219628894890102423325116913619626622",
                "73267460800591547471830798392868535206946944540724",
                "76841822524674417161514036427982273348055556214818",
                "97142617910342598647204516893989422179826088076852",
                "87783646182799346313767754307809363333018982642090",
                "10848802521674670883215120185883543223812876952786",
                "71329612474782464538636993009049310363619763878039",
                "62184073572399794223406235393808339651327408011116",
                "66627891981488087797941876876144230030984490851411",
                "60661826293682836764744779239180335110989069790714",
                "85786944089552990653640447425576083659976645795096",
                "66024396409905389607120198219976047599490197230297",
                "64913982680032973156037120041377903785566085089252",
                "16730939319872750275468906903707539413042652315011",
                "94809377245048795150954100921645863754710598436791",
                "78639167021187492431995700641917969777599028300699",
                "15368713711936614952811305876380278410754449733078",
                "40789923115535562561142322423255033685442488917353",
                "44889911501440648020369068063960672322193204149535",
                "41503128880339536053299340368006977710650566631954",
                "81234880673210146739058568557934581403627822703280",
                "82616570773948327592232845941706525094512325230608",
                "22918802058777319719839450180888072429661980811197",
                "77158542502016545090413245809786882778948721859617",
                "72107838435069186155435662884062257473692284509516",
                "20849603980134001723930671666823555245252804609722",
                "53503534226472524250874054075591789781264330331690"};
    int a[100][10];

    for (int i = 0; i != 100; i++)
    {
        for (int j = 0; j != 10; j++)
        {
            a[i][j] = atoi(str[i].substr(j*5, 5).c_str());
        }
    }

    int b[10];
    for (int i = 0; i != 10; i++)
    {
        b[i] = 0;
    }

    for (int j = 0; j != 10; j++)
    {
        for (int i = 0; i != 100; i++)
        {
            b[j] += a[i][j];
        }
    }

    for (int i = 0; i != 10; i++)
    {
        if (i != 9)
        {
            b[i] += b[i+1]/100000;
        }

    }

    for (int i = 0; i != 10; i++)
    {
        cout << "[i]:" << b[i] << endl;
    }
}



Package pcre-8.42-6.el8.x86_64 is already installed. Error: Problem 1: conflicting requests - nothing provides expat(x86-64) = 2.2.5-4.el8 needed by expat-devel-2.2.5-4.el8.x86_64 Problem 2: conflicting requests - nothing provides freetype = 2.9.1-4.el8_3.1 needed by freetype-devel-2.9.1-4.el8_3.1.x86_64 Problem 3: conflicting requests - nothing provides libffi = 3.1-22.el8 needed by libffi-devel-3.1-22.el8.x86_64 Problem 4: conflicting requests - nothing provides libselinux(x86-64) = 2.9-5.el8 needed by libselinux-devel-2.9-5.el8.x86_64 Problem 5: conflicting requests - nothing provides libverto(x86-64) = 0.3.0-5.el8 needed by libverto-devel-0.3.0-5.el8.x86_64 Problem 6: conflicting requests - nothing provides pcre2(x86-64) = 10.32-2.el8 needed by pcre2-devel-10.32-2.el8.x86_64 Problem 7: conflicting requests - nothing provides xz-libs(x86-64) = 5.2.4-3.el8 needed by xz-devel-5.2.4-3.el8.x86_64 Problem 8: conflicting requests - nothing provides zlib(x86-64) = 1.2.11-17.el8 needed by zlib-devel-1.2.11-17.el8.x86_64 Problem 9: problem with installed package glibc-gconv-extra-2.28-251.el8_10.2.x86_64 - package glibc-gconv-extra-2.28-251.el8_10.2.x86_64 requires glibc(x86-64) = 2.28-251.el8_10.2, but none of the providers can be installed - package glibc-gconv-extra-2.28-251.el8_10.16.x86_64 requires glibc(x86-64) = 2.28-251.el8_10.16, but none of the providers can be installed - cannot install both glibc-2.28-164.el8.x86_64 and glibc-2.28-251.el8_10.2.x86_64 - cannot install both glibc-2.28-164.el8.x86_64 and glibc-2.28-251.el8_10.16.x86_64 - conflicting requests Problem 10: problem with installed package glibc-minimal-langpack-2.28-251.el8_10.2.x86_64 - package glibc-minimal-langpack-2.28-251.el8_10.2.x86_64 requires glibc-common = 2.28-251.el8_10.2, but none of the providers can be installed - package glibc-minimal-langpack-2.28-251.el8_10.16.x86_64 requires glibc-common = 2.28-251.el8_10.16, but none of the providers can be installed - cannot install both glibc-common-2.28-164.el8.x86_64 and glibc-common-2.28-251.el8_10.2.x86_64 - cannot install both glibc-common-2.28-164.el8.x86_64 and glibc-common-2.28-251.el8_10.16.x86_64 - conflicting requests Problem 11: problem with installed package glibc-all-langpacks-2.28-251.el8_10.2.x86_64 - package glibc-all-langpacks-2.28-251.el8_10.16.x86_64 requires glibc-common = 2.28-251.el8_10.16, but none of the providers can be installed - package glibc-all-langpacks-2.28-251.el8_10.2.x86_64 requires glibc = 2.28-251.el8_10.2, but none of the providers can be installed - cannot install both glibc-common-2.28-164.el8.x86_64 and glibc-common-2.28-251.el8_10.16.x86_64 - cannot install both glibc-2.28-164.el8.x86_64 and glibc-2.28-251.el8_10.2.x86_64 - package glibc-langpack-en-2.28-164.el8.x86_64 requires glibc-common = 2.28-164.el8, but none of the providers can be installed - package glibc-devel-2.28-164.el8.x86_64 requires glibc = 2.28-164.el8, but none of the providers can be installed - conflicting requests Problem 12: package krb5-devel-1.18.2-14.el8.x86_64 requires libselinux-devel, but none of the providers can be installed - package libselinux-devel-2.9-10.el8_10.x86_64 requires pkgconfig(libpcre2-8), but none of the providers can be installed - package libselinux-devel-2.9-10.el8_10.i686 requires pkgconfig(libpcre2-8), but none of the providers can be installed - package libselinux-devel-2.9-8.el8.x86_64 requires pkgconfig(libpcre2-8), but none of the providers can be installed - pcre2-devel-10.32-3.el8_6.i686 has inferior architecture - package pcre2-devel-10.32-3.el8_6.x86_64 requires pcre2-utf16(x86-64) = 10.32-3.el8_6, but none of the providers can be installed - cannot install both pcre2-utf16-10.32-2.el8.x86_64 and pcre2-utf16-10.32-3.el8_6.x86_64 - conflicting requests - nothing provides libselinux(x86-64) = 2.9-5.el8 needed by libselinux-devel-2.9-5.el8.x86_64 - nothing provides pcre2(x86-64) = 10.32-2.el8 needed by pcre2-devel-10.32-2.el8.x86_64 Problem 13: package krb5-devel-1.18.2-14.el8.x86_64 requires libselinux-devel, but none of the providers can be installed - package libselinux-devel-2.9-10.el8_10.x86_64 requires pkgconfig(libpcre2-8), but none of the providers can be installed - package libselinux-devel-2.9-10.el8_10.i686 requires pkgconfig(libpcre2-8), but none of the providers can be installed - package libselinux-devel-2.9-8.el8.x86_64 requires pkgconfig(libpcre2-8), but none of the providers can be installed - package pcre2-devel-10.32-3.el8_6.i686 requires libpcre2-32.so.0, but none of the providers can be installed - package pcre2-devel-10.32-3.el8_6.i686 requires pcre2-utf32(x86-32) = 10.32-3.el8_6, but none of the providers can be installed - package openssl-devel-1:1.1.1k-5.el8_5.x86_64 requires krb5-devel(x86-64), but none of the providers can be installed - pcre2-utf32-10.32-3.el8_6.i686 has inferior architecture - package pcre2-devel-10.32-3.el8_6.x86_64 requires pcre2-utf32(x86-64) = 10.32-3.el8_6, but none of the providers can be installed - package krb5-devel-1.18.2-29.el8_10.x86_64 requires krb5-libs(x86-64) = 1.18.2-29.el8_10, but none of the providers can be installed - package krb5-devel-1.18.2-32.el8_10.x86_64 requires krb5-libs(x86-64) = 1.18.2-32.el8_10, but none of the providers can be installed - cannot install both pcre2-utf32-10.32-2.el8.x86_64 and pcre2-utf32-10.32-3.el8_6.x86_64 - cannot install both krb5-libs-1.18.2-14.el8.x86_64 and krb5-libs-1.18.2-29.el8_10.x86_64 - cannot install both krb5-libs-1.18.2-14.el8.x86_64 and krb5-libs-1.18.2-32.el8_10.x86_64 - conflicting requests - nothing provides libselinux(x86-64) = 2.9-5.el8 needed by libselinux-devel-2.9-5.el8.x86_64 - nothing provides pcre2(x86-64) = 10.32-2.el8 needed by pcre2-devel-10.32-2.el8.x86_64 (try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
最新发布
06-07
<think>我们正在处理在CentOS8中安装开发库时出现的依赖冲突问题。用户提到了多个库(expat、freetype、libffi、libselinux、libverto、pcre2、xz-libs和zlib)的版本不匹配问题。我们需要提供解决依赖冲突的方法。根据引用[1]和[2],我们知道在CentOS中可以使用yum或dnf来管理包,并且引用[1]提到了使用`yumwhatprovides`来查询提供特定文件或库的包。另外,引用[2]展示了在CentOS8中仓库的列表,包括AppStream和BaseOS等。在CentOS8中,dnf是默认的包管理器。我们可以通过以下步骤来解决依赖冲突:1.**确保系统更新**:首先,确保系统是最新的,这可以解决一些已知的依赖问题。```bashsudodnfupdate```2.**使用dnf查找特定库的包**:如果知道库的名称,可以使用`dnfprovides`(相当于`yumwhatprovides`)来查找提供该库的包。例如,查找freetype:```bashdnfprovidesfreetype```3.**明确指定版本安装**:如果多个版本存在,我们可以尝试安装特定版本的库。例如,安装特定版本的zlib:```bashdnfinstallzlib-1.2.11-16.el8_2```4.**使用模块(Modules)**:CentOS8引入了模块(Modules),它允许在同一仓库中提供不同版本的软件包。我们可以查看可用的模块并启用适合的版本。-列出可用模块:```bashdnfmodulelist```-启用特定模块流(modulestream)和版本。例如,对于某个库的模块,我们可以启用:```bashdnfmoduleenable<module-name>:<stream>```5.**处理依赖冲突的错误信息**:当安装失败时,dnf通常会给出冲突的详细信息,我们可以根据这些信息调整安装命令。例如,如果要求安装的包A需要库B>=2.0,但系统中只有1.8,我们可以尝试安装库B的更高版本,或者寻找与库B1.8兼容的包A的旧版本。6.**使用仓库优先级(如果添加了多个仓库)**:如果系统中有多个仓库(如EPEL、Remi等),可能会因为不同仓库提供的版本不同而导致冲突。我们可以使用`dnf-plugin-priorities`来设置仓库优先级,确保优先使用稳定仓库。7.**尝试使用DNF的`--allowerasing`选项**:这个选项允许dnf删除冲突的包。但是要小心,因为它可能会删除一些系统需要的包。```bashsudodnfinstall--allowerasing<package>```8.**清理并重建dnf缓存**:有时候,清理缓存可以解决一些奇怪的问题。```bashsudodnfcleanallsudodnfmakecache```9.**使用容器或虚拟环境**:如果依赖问题难以解决,可以考虑使用容器(如Docker)或虚拟环境(如Python的virtualenv)来隔离环境。10.**手动编译安装**:如果以上方法都不奏效,可以考虑手动下载源代码编译安装,但要注意这可能会使后续的包管理变得复杂。对于用户提到的多个库(expat,freetype,libffi,libselinux,libverto,pcre2,xz-libs,zlib),我们可以按照上述步骤尝试解决。具体步骤如下:-首先,尝试更新系统,并确保启用了正确的仓库(包括BaseOS和AppStream等)。-然后,使用`dnfprovides`查找每个库对应的包,并查看可用的版本。-如果存在冲突,尝试安装与系统其他部分兼容的版本。如果必要,使用模块功能。注意:在CentOS8中,很多库属于BaseOS和AppStream仓库,它们之间的版本通常是兼容的。如果遇到问题,可能由于第三方仓库导致的版本冲突。引用[1]提到了使用`yumwhatprovides`(在CentOS8中应使用`dnfprovides`)来查找包。因此,我们可以针对每个库执行:```bashdnfprovides*/libexpat.*dnfprovides*/libfreetype.*#类似地查询其他库```这将给出提供该库的包名和版本。然后我们可以尝试安装这些包。最后,注意用户的问题可能是在安装某个特定的开发库(如Anaconda,如引用[3]所示)时遇到的依赖冲突。如果用户是在安装Anaconda,那么Anaconda可能会自带一套库,与系统库冲突。这时,可以考虑使用Anaconda的隔离环境,或者确保Anaconda不覆盖系统库。由于用户引用了Anaconda下载的命令(引用[3]),需要提醒用户注意Anaconda安装可能会修改环境变量,导致系统库被覆盖。因此,可能需要检查PATH和LD_LIBRARY_PATH等环境变量,确保系统库路径在Anaconda之前。因此,我们的回答应围绕以上方法展开。相关问题:§§相关问题§§1.在CentOS8中,如何查看当前已安装的库的版本?2.如何配置dnf仓库优先级来解决依赖冲突?3.使用dnf模块管理不同版本库的详细步骤是什么?4.如何避免Anaconda安装与系统库的冲突?</think> ### 解决CentOS 8开发库依赖冲突的方法 在CentOS 8中处理开发库(如expat、freetype、libffi等)的依赖冲突问题,可通过以下结构化方法逐步解决: #### 1. **诊断冲突根源** ```bash sudo dnf check-update # 检查可更新包 rpm -qa | grep -E 'expat|freetype|libffi|zlib' # 查看已安装版本 ``` 重点关注输出中标记为"conflict"或"requires"的依赖项。 #### 2. **使用DNF模块管理版本** CentOS 8的模块化仓库支持多版本共存[^2]: ```bash dnf module list | grep -i '开发库名称' # 如:sudo dnf module list freetype dnf module enable <模块名>:<版本流> # 启用特定版本流 ``` #### 3. **手动解决关键依赖** 对于冲突库(如zlib): ```bash dnf provides */libz.so.* # 查找提供库的包 dnf install zlib-1.2.11-17* # 显式安装指定版本 ``` #### 4. **仓库优先级配置** 当存在多个仓库时(如EPEL[^2]): ```bash sudo dnf install dnf-plugin-priorities vi /etc/yum.repos.d/epel.repo # 添加 priority=10 确保优先使用BaseOS仓库 ``` #### 5. **高级冲突解决技巧** - **依赖隔离**:创建虚拟环境 ```bash python -m venv myenv && source myenv/bin/activate ``` - **兼容性覆盖**: ```bash dnf install --allowerasing freetype-devel-2.9.1* # 允许替换旧包 ``` - **源码编译**: ```bash wget https://download.savannah.gnu.org/releases/freetype/freetype-2.10.4.tar.gz ./configure --prefix=/usr/local/custom ``` #### 6. **系统级修复** 更新后冲突仍存在时: ```bash dnf distro-sync # 恢复发行版标准版本 dnf remove $(package-cleanup --problems) # 清理无效依赖 ``` > **注意事项**: > 1. 操作前务必备份 `/etc/yum.repos.d/` > 2. 避免混合启用`AppStream`和`Stream-AppStream`仓库[^2] > 3. 第三方库需通过`dnf provides`验证来源(参考引用[1]方法) ---
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