Two string - C++ function template std::fill -

Twostring11.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <cstring>
#include <iostream>
#include <algorithm>
using namespace std;

const int Maxn = 100005;
const int Maxl = 26;

int t;
char s[Maxn];
int slen;
bool hasa[Maxl], hasb[Maxl];

int main() {
    scanf("%d", &t);
    while (t--) {
        fill(hasa, hasa + Maxl, false);
        scanf("%s", s); slen = strlen(s);
        for (int i = 0; i < slen; i++)
            hasa[s[i] - 'a'] = true;
        fill(hasb, hasb + Maxl, false);
        scanf("%s", s); slen = strlen(s);
        for (int i = 0; i < slen; i++)
            hasb[s[i] - 'a'] = true;
        bool has = false;
        for (int i = 0; i < Maxl; i++)
            has = has || hasa[i] && hasb[i];
        printf("%s\n", has? "YES": "NO");
    }
    return 0;
}