Submission #41606415

---

Source Code Expand

/*+Rainybunny+*/

#include <bits/stdc++.h>

#define rep(i, l, r) for (int i = l, rep##i = r; i <= rep##i; ++i)
#define per(i, r, l) for (int i = r, per##i = l; i >= per##i; --i)

const int MAXN = 3e5;
int n;
char S[MAXN + 5];

int main() {
    int T; scanf("%d", &T);
    while (T--) {
        scanf("%d %s", &n, S + 1);
        if (std::count(S + 1, S + n + 1, 'A') == n) { puts("A"); continue; }
        if (std::count(S + 1, S + n + 1, 'B') == n) { puts("B"); continue; }
        rep (i, 1, n - 1) if (S[i] == 'B' && S[i + 1] == 'A') {
            puts("A"); goto FIN;
        }
        puts("B");
        FIN: ;
    }
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   13 |     int T; scanf("%d", &T);
      |            ~~~~~^~~~~~~~~~
./Main.cpp:15:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   15 |         scanf("%d %s", &n, S + 1);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~

Judge Result