1606A - AB Balance - CodeForces Solution

#include <bits/stdc++.h>

using namespace std;

char s[101];

int main(){
    int t, len, i, j;

    scanf("%d", &t);
    while(t--){
        scanf("%s", s);

        len = strlen(s);
        if(s[0] != s[len - 1])
            s[len - 1] = s[0];

        printf("%s\n", s);
    }

    return 0;
}