Two string - using bit operation, count, set string A char in first bit, string B char in second bit, and then, if both, then check value is 3

Twostring4.cpp

#include <cstdio>
#include <cstring>
#include <cmath>
#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <queue>
#include <stack>
#include <set>
#include <map>

using namespace std;

int main(){
    ios::sync_with_stdio(0);
    
    string A,B;
    
    int T;
    
    cin >> T;
    
    int cont[26];
    
    while(T--){
        cin >> A >> B;
        
        
        memset(cont,0,sizeof cont);
        
        for(int i = 0;i < A.size();++i)
            cont[ A[i] - 'a'] |= 1;
        
        for(int i = 0;i < B.size();++i)
            cont[ B[i] - 'a'] |= 2;
        
        if(count(cont,cont + 26,3) > 0) cout << "YES\n";
        else cout << "NO\n";
    }
    
    return 0;
}