Submission #1115718

#	Time	Username	Problem	Language	Result	Execution time	Memory
1115718		staszic_ojuz	Dango Maker (JOI18_dango_maker)	C++17	100 / 100	98 ms	21540 KiB

dango_maker

#include <bits/stdc++.h>

using namespace std;

const int MAX=3*1e3+7;

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    string greed[MAX];
    int n, m;

    cin >> n >> m;

    for (int i=1; i<=n; i++){
        cin >> greed[i];
        greed[i] += "###";
    }

    for (int i=0; i<=m+2; i++){
        greed[0] += "#";
        greed[n+1] += "#";
    }

    int wyn=0;

    for (int i=1; i<=n; i++){
        for (int j=0; j<m; j++){
            if (greed[i][j] == 'R'){
                if ((greed[i][j+1] == 'G') and (greed[i][j+2] == 'W')){
                    wyn++;
                    if ((greed[i-1][j+1] == 'R') and (greed[i+1][j+1] == 'W')){
                        greed[i-1][j+1] = '#';
                        greed[i][j+1] = '#';
                        greed[i][j+2] = '#';
                    }
                    else{
                        greed[i][j] = '#';
                        greed[i][j+1] = '#';
                        greed[i][j+2] = '#';
                    }
                }
            }
            else if (greed[i][j] == 'G'){
                if ((greed[i-1][j] == 'R') and (greed[i+1][j] == 'W')){
                    wyn++;
                    if ((greed[i][j-1] == 'R') and (greed[i][j+1] == 'W')){
                        greed[i][j] = '#';
                        greed[i][j+1] = '#';
                        greed[i-1][j] = '#';
                    }
                    else{
                        greed[i-1][j] = '#';
                        greed[i][j] = '#';
                        greed[i+1][j] = '#';
                    }
                }
            }
        }
    }

    cout << wyn << "\n";

    return 0;
}

• Subtask 1: 13 / 13
• Subtask 2: 20 / 20
• Subtask 3: 67 / 67