Submission #1243844

#	Time	Username	Problem	Language	Result	Execution time	Memory
1243844		lebron	Collecting Mushrooms (NOI18_collectmushrooms)	C++20	60 / 100	2095 ms	4696 KiB

mushrooms

#include <iostream>
#include <vector>

using namespace std;

int main() {
    int r, c, d, k;
    cin >> r >> c >> d >> k;

    vector<vector<char>> a(r, vector<char>(c));
    vector<vector<int>> num(r, vector<int>(c));

    for (int i = 0; i < r; i++) {
        for (int j = 0; j < c; j++) {
            cin >> a[i][j];
        }
    }

    for (int i = 0; i < r; i++) {
        for (int j = 0; j < c; j++) {
            if (a[i][j] == 'S') {
                for (int I = i - d; I <= i + d; I++) {
                    for (int J = j - d; J <= j + d; J++) {
                        if (I >= 0 && I < r && J >= 0 && J < c) {
                            if (a[I][J] == 'M') {
                                num[I][J] += 1;
                            }
                        }
                    }
                }
            }
        }
    }

    int ans = 0;

    for (int i = 0; i < r; i++) {
        for (int j = 0; j < c; j++) {
            if (num[i][j] >= k) {
                ans += 1;
            }
        }
    }

    cout << ans << '\n';
}

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 18 / 18
• Subtask 4: 23 / 23
• Subtask 5: 0 / 19
• Subtask 6: 0 / 21