AcWing 3694. A还是B

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#include <iostream>
using namespace std;
char c;
int n, a, b;
int main() {
cin >> n;
a = 0, b = 0;
for (int i = 0; i < n; ++i) {
cin >> c;
if (c == 'A') a++;
else b++;
}
cout << (a == b ? "T" : (a > b ? "A" : "B")) << endl;
}