poj 1953

poj经典动态规划题目解题报告 poj经典动态规划题目解题报告,包括经典的动态规划题目20多道,可以作为学习动态规划系统的资料,包括题目:Pku acm 1179 PolygonPku acm 1125 Stockbroker GrapevinePku acm 1160 post officePku acm 1014 DividingPku acm 1050 To the MaxPku acm 1088 滑雪Pku acm 2533 Longest Ordered SubsequencePku acm 1631 Bridging signalsPku acm 1887 Testing the CATCHER Pku acm 3356 AGTCPku acm 2192 ZipperPku acm 1080 Humman Gene Function Pku acm 1159 Palindrome Pku acm 2250 Compromise Pku acm 1458 Common Subsequence Pku acm 1953 World Cup Noise Pku acm 2081 Recaman's SequencePku acm 1579 Function Run Fun Pku acm 1157 LITTLE SHOP OF FLOWERSPku acm 1163 the Triangle 立即下载

Problem:World Cup Noise

Description:韩国球迷用喇叭给运动员加油时,喇叭的使用时间不能超过2秒,否则喇叭就会坏掉,总的来说就是1不能连续出现。问给定一个正整数n,表示能有多少种方案吹响喇叭而不让喇叭损坏。

Solution:当n=1时,有0或1两种方案;当n=2时,有00,01,10三种方案;当n=3时可以分解成最后一秒是0和1来讨论,分析得知有五种方案;推广到n,知道f(n)=f(n-1)+f(n-2),代码很简单。

Code(C++):

#include<iostream>
#include<cstdio>
using namespace std;

int main()
{
    int i,n,m,k=0;
    long long int a[55];
    a[1]=2;
    a[2]=3;
    for(i=3;i<55;i++)
        a[i]=a[i-1]+a[i-2];
    cin>>n;
    while(n--)
    {
        cin>>m;
        int ans=a[m];
        cout<<"Scenario #"<<k+1<<":"<<endl<<ans<<endl<<endl;
        k++;
    }
    return 0;
}
北大POJ部分题目答案(一些基础题目) 很多的POJ题目答案!1000~1008,1011~1014,1016,1017,1019,1028,1032,1045,1046,1047,1050,1061,1067,1068,1088,1102,1159,1163,1183,1207,1218,1226,1247,1256,1258,1298,1316,1323,1326,1338,1363,1396,1401,1423,1455,1458,1468,1477,1488,1503,1504,1517,1519,1528,1543,1547,1552,1265,1579,1604,1629,1656,1657,1658,1663,1664,1665,1674,1799,1844,1862,1922,1953,1969,1979,2000,2013,2017,2027,2039,2070,2080,2105,2109,2136,2140,2141,2159,2190,2196,2242,2247,2249,2262,2301,2309,2328,2350,2386,2388,2389,2390,2403,2405,2453,2479,2487,2498,2509,2521,2533,2538,2551,2562,2575,2578,2583,2591,2593,2601,2602,2608,2636,2663,2707,2719,2739,2801,2840,2871,2909,2924,3006,3030,3062,3077,3085,3094,3100,3173,3176,3210,3224,3302,3325,3438,3673,3036,2503,1731,2503,1065,3636 立即下载

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算法 POJ1953

然后从 2 开始遍历到`n`,对于每个长度`i`,依据状态转移方程更新`dp0`和`dp1`数组的值,以 0 结尾的序列数量`dp0[i]`等于前一个长度以 0 结尾的序列数量`dp0[i - 1]`加上前一个长度以 1 结尾的序列数量`dp1[i - 1]`;解题的关键在于使用动态规划的方法,通过定义两个数组`dp0`和`dp1`分别记录以0和1结尾的不包含相邻1的序列的数量,利用状态转移方程递推计算出不同长度序列的满足条件的数量,最后将以0和1结尾的序列数量相加得到最终结果。用空行终止方案的输出。

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poj1953 World Cup Noise

原题: http://poj.org/problem?id=1953 //写几个数推一下就会发现是斐波那契数列 #include typedef long long ll; ll dp[46]={0,2,3}; ll get(int n) { if(n==0){ return 0; } if(dp[n]!=0) { return dp[n]; }else{ dp[n]=

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