Submission #1294857

#	Time	Username	Problem	Language	Result	Execution time	Memory
1294857		kawhiet	Red-blue table (IZhO19_stones)	C++20	0 / 100	9 ms	4412 KiB

stones

#include <bits/stdc++.h>
using namespace std;

void solve() {
    int n, m;
    cin >> n >> m;
    int x = m + (n - 1) / 2;
    int y = n + (m - 1) / 2;
    if (x > y) {
        cout << x << '\n';
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                cout << (i % 2 == 0 ? '-' : '+');
            }
            cout << '\n';
        }
    } else {
        cout << y << '\n';
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                cout << (j % 2 == 0 ? '+' : '-');
            }
            cout << '\n';
        }
    }
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
    return 0;
}

• Subtask 1: 0 / 17
• Subtask 2: 0 / 10
• Subtask 3: 0 / 16
• Subtask 4: 0 / 11
• Subtask 5: 0 / 15
• Subtask 6: 0 / 31