题解 | #竞选社长#

#include <stdio.h>
#include <string.h>
int main() {
    char a;
    int t0 = 0, t1 = 0;
    while (scanf("%c", &a) != EOF) {
        if (a == 'A') {
            t0 = t0 + 1;
        } else if (a == 'B') {
            t1 = t1 + 1;
        } else if (a == '0')
            break;
    }
    if (t0 > t1) {
        printf("A");

    } else if (t0 < t1) {
        printf("B");
    } else if (t0 == t1)
        printf("E");
    return 0;
}