Educational Codeforces Round 77 (Rated for Div. 2) B. Obtain Two Zeroes

Posted 2021-03-20 c4lnn

题目：https://codeforces.com/contest/1260/problem/B
思路：易得成立的条件为：((a+b)mod3==0) && (max(a,b)le min(a,b)*2)

#include<bits/stdc++.h>

using namespace std;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    int T;cin>>T;
    while(T--)
    {
        int a,b;
        cin>>a>>b;
        if((a+b)%3==0&&max(a,b)<=min(a,b)*2) cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }
    return 0;
}