Codeforces Round #451 (Div. 2)

A. Rounding

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

Vasya has a non-negative integer n. He wants to round it to nearest integer, which ends up with 0. If n already ends up with 0, Vasya considers it already rounded.

For example, if n = 4722 answer is 4720. If n = 5 Vasya can round it to 0 or to 10. Both ways are correct.

For given n find out to which integer will Vasya round it.

Input

The first line contains single integer n (0 ≤ n ≤ 109) — number that Vasya has.

Output

Print result of rounding n. Pay attention that in some cases answer isn't unique. In that case print any correct answer.

Examples

input

5

output

0

input

113

output

110

input

1000000000

output

1000000000

input

5432359

output

5432360

Note

In the first example n = 5. Nearest integers, that ends up with zero are 0 and 10. Any of these answers is correct, so you can print 0 or 10.

就是四舍五入，舍和入的是各位

My ugly code

#include <cstdio>
#include <cmath>
#include <algorithm>

using namespace std;

int main(){

    int n;
    while(~scanf("%d",&n)){
        if(n%10 > 5){
            printf("%d\n",n-n%10+10);
        }
        else{
            printf("%d\n",n-n%10);
        }
    }

    return 0;
}

B. Proper Nutrition

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

Vasya has n burles. One bottle of Ber-Cola costs a burles and one Bars bar costs b burles. He can buy any non-negative integer number of bottles of Ber-Cola and any non-negative integer number of Bars bars.

Find out if it's possible to buy some amount of bottles of Ber-Cola and Bars bars and spend exactly n burles.

In other words, you should find two non-negative integers x and y such that Vasya can buy x bottles of Ber-Cola and y Bars bars and x·a + y·b = n or tell that it's impossible.

Input

First line contains single integer n (1 ≤ n ≤ 10 000 000) — amount of money, that Vasya has.

Second line contains single integer a (1 ≤ a ≤ 10 000 000) — cost of one bottle of Ber-Cola.

Third line contains single integer b (1 ≤ b ≤ 10 000 000) — cost of one Bars bar.

Output

If Vasya can't buy Bars and Ber-Cola in such a way to spend exactly n burles print «NO» (without quotes).

Otherwise in first line print «YES» (without quotes). In second line print two non-negative integers x and y — number of bottles of Ber-Cola and number of Bars bars Vasya should buy in order to spend exactly n burles, i.e. x·a + y·b = n. If there are multiple answers print any of them.

Any of numbers x and y can be equal 0.

Examples

input

7
2
3

output

YES
2 1

input

100
25
10

output

YES
0 10

input

15
4
8

output

NO

input

9960594
2551
2557

output

YES
1951 1949

Note

In first example Vasya can buy two bottles of Ber-Cola and one Bars bar. He will spend exactly 2·2 + 1·3 = 7 burles.

In second example Vasya can spend exactly n burles multiple ways:

• buy two bottles of Ber-Cola and five Bars bars;
• buy four bottles of Ber-Cola and don't buy Bars bars;
• don't buy Ber-Cola and buy 10 Bars bars.

In third example it's impossible to but Ber-Cola and Bars bars in order to spend exactly n burles.

就是判断下能不能被这两个数配出来，一层for循环，暴力，cf测评机应该是支持一秒千万次

#include <cstdio>
#include <cmath>
#include <algorithm>

using namespace std;

int main(){

    /*freopen("input.txt","r",stdin);*/
    int n,a,b;
    while(~scanf("%d",&n)){
        scanf("%d%d",&a,&b);
        int jie=n/a;
        int ansA=0,ansB=0,flag=0;
        for(int i=0;i<=jie;i++){
            int tmp=n-a*i;
            if(tmp % b == 0){
                ansA=i;
                ansB=tmp/b;
                flag=1;
                break ;
            }
        }
        if(flag){
            printf("YES\n");
            printf("%d %d\n",ansA,ansB);
        }
        else{
            printf("NO\n");
        }

    }

    return 0;
}

C. Phone Numbers

time limit per test

2 seconds

memory limit per test

256 megabytes

input

standard input

output

standard output

Vasya has several phone books, in which he recorded the telephone numbers of his friends. Each of his friends can have one or several phone numbers.

Vasya decided to organize information about the phone numbers of friends. You will be given n strings — all entries from Vasya's phone books. Each entry starts with a friend's name. Then follows the number of phone numbers in the current entry, and then the phone numbers themselves. It is possible that several identical phones are recorded in the same record.

Vasya also believes that if the phone number a is a suffix of the phone number b (that is, the number b ends up with a), and both numbers are written by Vasya as the phone numbers of the same person, then a is recorded without the city code and it should not be taken into account.

The task is to print organized information about the phone numbers of Vasya's friends. It is possible that two different people have the same number. If one person has two numbers x and y, and x is a suffix of y (that is, y ends in x), then you shouldn't print number x. If the number of a friend in the Vasya's phone books is recorded several times in the same format, it is necessary to take it into account exactly once.

Read the examples to understand statement and format of the output better.

Input

First line contains the integer n (1 ≤ n ≤ 20) — number of entries in Vasya's phone books.

The following n lines are followed by descriptions of the records in the format described in statement. Names of Vasya's friends are non-empty strings whose length does not exceed 10. They consists only of lowercase English letters. Number of phone numbers in one entry is not less than 1 is not more than 10. The telephone numbers consist of digits only. If you represent a phone number as a string, then its length will be in range from 1 to 10. Phone numbers can contain leading zeros.

Output

Print out the ordered information about the phone numbers of Vasya's friends. First output m — number of friends that are found in Vasya's phone books.

The following m lines must contain entries in the following format "name number_of_phone_numbers phone_numbers". Phone numbers should be separated by a space. Each record must contain all the phone numbers of current friend.

Entries can be displayed in arbitrary order, phone numbers for one record can also be printed in arbitrary order.

Examples

input

2
ivan 1 00123
masha 1 00123

output

2
masha 1 00123 
ivan 1 00123 

input

3
karl 2 612 12
petr 1 12
katya 1 612

output

3
katya 1 612 
petr 1 12 
karl 1 612 

input

4
ivan 3 123 123 456
ivan 2 456 456
ivan 8 789 3 23 6 56 9 89 2
dasha 2 23 789

output

2
dasha 2 23 789 
ivan 4 789 123 2 456 

这个就是纯模拟，被自己的代码恶心到了

#include <cstdio>
#include <cstring>
#include <string>
#include <algorithm>
#include <iostream>
#include <set>
#include <map>

using namespace std;

struct node{
    string phone;
    int len;

    bool operator < (const node &a) const{
        return a.len > len;
    }
};
int n;
char name[20];
int m;

bool ifhz(string s1,string s2){
    int len1=s1.size()-1,len2=s2.size()-1;

    while(len1 >= 0 && len2 >= 0){
        if(s1[len1] != s2[len2]){
            return false;
        }
        len1--;
        len2--;
    }
    if(s2.size() > s1.size()){
        return true;
    }

    return false;
}

int main(){

    while(~scanf("%d",&n)){
        map<string,set<string> > mp;
        set<string> st[20];
        for(int k=0;k<n;k++){
            scanf("%s",name);
            scanf("%d",&m);
            char s[20];
            for(int i=0;i<m;i++){
                scanf("%s",s);
                mp[name].insert(s);
            }
        }
        int cnt=-1;
        map<string,set<string> >::iterator it;
        for(it=mp.begin();it!=mp.end();it++){
            cnt++;
            set<string>::iterator iot,iotr;

            for(iot=it->second.begin();iot!=it->second.end();iot++){
                int flag=1;

                for(iotr=it->second.begin();iotr!=it->second.end();iotr++){
                    if(iotr == iot)
                        continue ;
                    if(ifhz((*iot),(*iotr))){
                        flag=0;
                        break ;
                    }
                }
                if(flag)
                    st[cnt].insert((*iot) );
            }
        }
        printf("%d\n",mp.size());
        int i=-1;
        for(it=mp.begin();it!=mp.end();it++){
            i++;
            cout << it->first << " ";
            printf("%d",st[i].size());
            set<string>::iterator iot;
            for(iot=st[i].begin();iot!=st[i].end();iot++){
                cout << " " << *iot;
            }
            printf("\n");
        }
    }


    return 0;
}

待更新、、、