oj.uz

Submission #993734

# Submission time Handle Problem Language Result Execution time Memory
993734 2024-06-06T10:42:26 Z n3rm1n Red-blue table (IZhO19_stones) C++17
100 / 100
 18 ms 5212 KB 
#include<bits/stdc++.h>
#define endl '\n'
#define ll long long
using namespace std;
const int MAXN = 1e3+10;
void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}
int n, m;
/// 1 - red
/// 0 - blue
int a[MAXN][MAXN];

int cnt[MAXN];
void solve_test()
{
    cin >> n >> m;
    int nooo = 0;
    if(n < m)
    {
        nooo = 1;
        swap(n, m);
    }
    if(n >= m)
    {
        for (int i = 1; i <= n; ++ i)
        {
            for (int j = 1; j <= m; ++ j)
                a[i][j] = 1;
        }
        memset(cnt, 0, sizeof(cnt));
        int togive = (m - 1)/2;
        int need = n/2 + 1;
        int i = 1;
        int ans = n;

        for (int j = 1; j <= m; ++ j)
        {
            if(cnt[i] >= togive)break;

            int token = need;
            while(token)
            {
                if(cnt[i] >= togive)break;
                a[i][j] = 0;
                //cout << i << " " << j << " " << endl;
                token --;
                cnt[i] ++;
                i ++;
                if(i == n+1)i = 1;
            }
            if(!token)ans ++;
        }

        if(!nooo)
        {
            cout << ans << endl;
        for (int i = 1; i <= n; ++ i)
        {
            for (int j = 1; j <= m; ++ j)
            {
                if(a[i][j] == 1)cout << '+';
                else cout << '-';
            }
            cout << endl;
        }
        }
        else
        {
            cout << ans << endl;
        for (int i = 1; i <= m; ++ i)
        {
            for (int j = 1; j <= n; ++ j)
            {
                if(a[j][i] == 0)cout << '+';
                else cout << '-';
            }
            cout << endl;
        }
        }
    }
}
int main()
{
    speed();
    int t;
    cin >> t;
    while(t --)
    {
        solve_test();
    }
    return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2648 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2648 KB Output is correct
4 Correct 2 ms 2652 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 3676 KB Output is correct
2 Correct 17 ms 4696 KB Output is correct
3 Correct 15 ms 4956 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 3676 KB Output is correct
2 Correct 18 ms 3928 KB Output is correct
3 Correct 13 ms 3420 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2648 KB Output is correct
4 Correct 2 ms 2652 KB Output is correct
5 Correct 18 ms 3676 KB Output is correct
6 Correct 17 ms 4696 KB Output is correct
7 Correct 15 ms 4956 KB Output is correct
8 Correct 17 ms 3676 KB Output is correct
9 Correct 18 ms 3928 KB Output is correct
10 Correct 13 ms 3420 KB Output is correct
11 Correct 5 ms 600 KB Output is correct
12 Correct 14 ms 4300 KB Output is correct
13 Correct 15 ms 4696 KB Output is correct
14 Correct 11 ms 3932 KB Output is correct
15 Correct 17 ms 5212 KB Output is correct
16 Correct 14 ms 4700 KB Output is correct
17 Correct 6 ms 3420 KB Output is correct