Submission #532482

#	Time	Username	Problem	Language	Result	Execution time	Memory
532482		dannyboy20031204	Red-blue table (IZhO19_stones)	C++17	27 / 100	27 ms	1252 KiB

stones

#include<bits/stdc++.h>
using namespace std;
#define ll long long
void db() {cout << '\n';}
template <typename T, typename ...U> void db(T a, U ...b){
    cout << a << ' ', db(b...);
}
void solve(){
    int n, m;
    cin >> n >> m;
    cout << max(n + (m - 1) / 2, m + (n - 1) / 2) << '\n';
    if (n + (m - 1) / 2 > m + (n - 1) / 2){
        for (int i = 0; i < n; i++){
            for (int j = 0; j < m; j++){
                if (j % 2 == 0 or (m % 2 == 0 and j == m - 1)) cout << '+';
                else cout << '-';
            }
            cout << '\n';
        }
    }
    else{
        for (int i = 0; i < n; i++){
            for (int j = 0; j < m; j++){
                if (i % 2 == 0 or (n % 2 == 0 and i == n - 1)) cout << '-';
                else cout << '+';
            }
            cout << '\n';
        }
    }
}
int main(){
    ios::sync_with_stdio(0), cin.tie(0);
    int t;
    cin >> t;
    while (t--) solve();
}

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