oj.uz

Submission #171116

# Submission time Handle Problem Language Result Execution time Memory
171116 2019-12-27T13:05:49 Z donentseto Red-blue table (IZhO19_stones) C++14
21 / 100
 38 ms 1400 KB 
#include <bits/stdc++.h>
using namespace std;
int main (){

    ios::sync_with_stdio (false);
    cin.tie (0);

    int t;
    cin >> t;
    while (t --){
        int n, m;
        cin >> n >> m;
        if (n <= 2 && m >= n){
            cout << m << '\n';
            for (int i = 0; i < n; i ++){
                for (int j = 0; j < m; j ++) cout << '-';
                cout << '\n';
            }
        }
        else if (m <= 2){
            cout << n << '\n';
            for (int i = 0; i < n; i ++){
                for (int j = 0; j < m; j ++) cout << '+';
                cout << '\n';
            }
        }
        else if (n == 3){
            cout << m + 1 << '\n';
            for (int i = 0; i < m; i ++) cout << '+';
            cout << '\n';
            for (int i = 0; i < m; i ++) cout << '-';
            cout << '\n';
            for (int i = 0; i < m; i ++) cout << '-';
            cout << '\n';
        }
        else if (m == 3){
            cout << n + 1 << '\n';
            for (int i = 0; i < n; i ++) cout << "-++\n";
        }
        else{
            cout << n - 2 + n % 2 + m - 2 + m % 2 << '\n';
            for (int i = 0; i < n; i ++){
                for (int j = 0; j < m; j ++){
                    if (i <= n >> 1 && j < m - 1 >> 1) cout << '-';
                    else if (i >= n - 1 >> 1 && j > m >> 1) cout << '-';
                    else cout << '+';
                }
                cout << '\n';
            }
        }
    }

}

Compilation message

stones.cpp: In function 'int main()':
stones.cpp:44:46: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
                     if (i <= n >> 1 && j < m - 1 >> 1) cout << '-';
                                            ~~^~~
stones.cpp:45:37: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
                     else if (i >= n - 1 >> 1 && j > m >> 1) cout << '-';
                                   ~~^~~

Subtask #1
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Incorrect 5 ms 376 KB Wrong answer in test 4 4: 4 < 5

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Incorrect 5 ms 376 KB Wrong answer in test 4 4: 4 < 5

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 1320 KB Output is correct
2 Correct 27 ms 1272 KB Output is correct
3 Correct 25 ms 1272 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 34 ms 1400 KB Wrong answer in test 4 4: 4 < 5
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Incorrect 5 ms 376 KB Wrong answer in test 4 4: 4 < 5