Submission #686658

#	Time	Username	Problem	Language	Result	Execution time	Memory
686658		TheSahib	Red-blue table (IZhO19_stones)	C++14	27 / 100	34 ms	1324 KiB

stones

#include <bits/stdc++.h>

#define ll long long
#define i128 __int128_t
#define pii pair<int, int>
#define oo 1e9

using namespace std;

void solve(){
    int n, m; cin >> n >> m;
    bool flipped = false;
    if(m < n){
        flipped = true;
        swap(n, m);
    }
    vector<vector<bool>> grid(n, vector<bool>(m, 0));
    if(n <= 2){
        cout << m << '\n';
    }
    else if(n <= 4){
        cout << m + 1 << '\n';
        for (int i = 0; i < m; i++)
        {
            grid[0][i] = 1;
        }
    }
    else if(n <= 6){
        cout << m + 3 << '\n';
        for (int i = 0; i < m / 2 + m % 2; i++)
        {
            grid[0][i] = 1;
        }
        for (int i = m / 2 + m % 2 - 1; i < m; i++)
        {
            grid[1][i] = 1;
        }
        for (int i = 0; i < m; i++)
        {
            grid[2][i] = 1;
        }
        grid[2][m / 2 + m % 2 - 1] = 0;
    }

    if(!flipped){
        for (int i = 0; i < n; i++)
        {
            for (int j = 0; j < m; j++)
            {
                if(grid[i][j]) cout << '+';
                else cout << '-';
            }
            cout << '\n';
        }
    }
    else{
        for (int i = 0; i < m; i++)
        {
            for (int j = 0; j < n; j++)
            {
                if(!grid[j][i]) cout << '+';
                else cout << '-';
            }
            cout << '\n';
        }
    }
}

int main()
{
    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