题解 | #竞选社长#

#include <stdio.h>

int main() {
    char arr[1000];
    gets(arr);

    int a = 0;
    int b = 0;
    int i = 0;
    while (arr[i] != '\0')
    {
        if (arr[i] == 'A')
        {
            a++;
        }
        if (arr[i] == 'B')
        {
            b++;
        }
        i++;
    }

    if ( a > b)
    {
        printf("A");
    }
    if ( a < b)
    {
        printf("B");
    }
    if (a == b)
    {
        printf("E");
    }
    return 0;
}