Submission #1179235

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Source Code Expand

#include<iostream>
#include<vector>
#include<string>
using namespace std;
int main() {
    int n; cin >> n;
    int a = 0, un = 0;
    bool b = true;
    for (int i = 0; i < n; i++){
        string str;
        cin >> str;
        if (str == "A")a++;
        else if (str == "Un")un++;
        if (a < un)b = false;
    }
    if (a > un)b = false;
    if (b)cout << "YES"; else cout << "NO";
    cout << endl;
    return 0;
}

Submission Info

Judge Result