Submission #1338438

#	Time	Username	Problem	Language	Result	Execution time	Memory
1338438		vjudge1	Red-blue table (IZhO19_stones)	C++17	0 / 100	10 ms	1392 KiB

stones

#include <bits/stdc++.h>

using namespace std;

int main() {
    int t, n, m, i, j;

    cin >> t;
    while( t-- ) {
        cin >> n >> m;
        if( n == 1 ) {
            cout << m << '\n';
            for( i = 1; i <= m; i++ )
                cout << '-';
            cout << '\n';
        } else if( m == 1 ) {
            cout << n << '\n';
            for( i = 1; i <= n; i++ )
                cout << '+';
            cout << '\n';
        } else if( m & 1 ) {
            /*
            +-+-+...
            +-+-+...
            +-+-+...
            */
            cout << n + m / 2 << '\n';
            for( i = 1; i <= n; i++ ) {
                for( j = 1; j <= m; j++ )
                    if( j & 1 )
                        cout << '+';
                    else
                        cout << '-';
                cout << '\n';
            }
        } else {
            /*
            +++-
            +++-
            +++-
            */
            cout << n + m / 2 - 1 << '\n';
            for( i = 1; i <= n; i++ ) {
                for( j = 1; j <= m; j++ )
                    if( j <= m / 2 + 1 )
                        cout << '+';
                    else
                        cout << '-';
                cout << '\n';
            }
        }
    }
    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