1790. Single Round Match

1790. Single Round Match

  

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2.2/5.0(13 votes)

012345

    

    

Time Limit: 1sec    Memory Limit:32MB

Description

Association for Couples Match (ACM) is a non-profit organization which is engaged in helping single people to find his/her other half. As November 11th is "Singles Day", on this day, ACM invites a large group of singles to the party. People round together, chatting with others, and matching partners. There are N gentlemen and M ladies in the party, each gentleman should only match with a lady and vice versa. To memorize the Singles Day, ACM decides to divide people into 11 groups, each group should have the same amount of couples and no people are left without the groups. Can ACM achieve the goal?

Input

The first line of the input is a positive integer T. T is the number of test cases followed. Each test case contains two integer N and M (0<=N, M<=10¹⁰⁰⁰), which are the amount of gentlemen and ladies. It is worth notice that N and M are really huge. You are suggested to input the number with string.

Output

    For each test case, output “YES” if it is possible to find a way, output “NO” if not.

Sample Input

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31 111 1122 11

Sample Output

NOYESNO

   

#include <iostream>#include <string>using namespace std;int main(){int t;cin>>t;while(t--){string a,b;cin>>a>>b;if(a!=b) {cout<<"NO"<<endl;continue;}else;{int k=0;for(int i=0;i<a.length();i++){k=k*10+a[i]-'0';k%=11;}if(k==0) cout<<"YES"<<endl;else cout<<"NO"<<endl;}}return 0;}