提出 #5063383

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ソースコード 拡げる

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main(int argc, char* argv[]){
    int N;
    string S;
    cin >> N >> S;

    int white_to_black_n = 0, black_to_white_n = 0;
    const char WHITE = '.';
    const char BLACK = '#';
    if (S[0] == BLACK){
        black_to_white_n++;
    }
    for(int i = 1 ; i < S.size(); ++i){
        if (S[i] == BLACK){
            black_to_white_n++;
        }
        if (S[i-1] == BLACK && S[i] == WHITE){
            white_to_black_n++;
            S[i] = BLACK;
            // i--;
        }
    }
    cout << std::min(black_to_white_n, white_to_black_n) << endl;
    // cout << white_to_black_n << endl;


    return 0;
}

提出情報

ジャッジ結果