제출 #1093420

#제출 시각아이디문제언어결과실행 시간메모리
1093420IrateGrowing Vegetable is Fun 3 (JOI19_ho_t3)C++17
0 / 100
1 ms604 KiB
#include<bits/stdc++.h>
using namespace std;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, res = 0;
    cin >> n;
    string str;
    cin >> str;
    for(int i = 1;i < n;++i){
        if(str[i] == str[i - 1]){
            int index = -1;
            for(int j = i + 1;j < n;++j){
                if(str[i] != str[j]){
                    index = j;
                    break;
                }
            }
            if(index == -1){
                cout << -1 << '\n';
                return 0;
            }
            while(str[i] == str[i - 1]){
                swap(str[index], str[index - 1]);
                res++;
                index--;
            }
        }
    }
    cout << res << '\n';
}
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