oj.uz

Submission #157904

# Submission time Handle Problem Language Result Execution time Memory
157904 2019-10-13T15:47:47 Z mrboorger Red-blue table (IZhO19_stones) C++14
38 / 100
 40 ms 2808 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define pb push_back
#define F first
#define S second
#define ll long long
#define ld long double
#define sqr(x) (x) * (x)
//#define all(a) a.begin(), a.end()

using namespace std;
using namespace __gnu_pbds;

//typedef tree<
//pair <int, int>,
//null_type,
//greater<pair <int, int>>,
//rb_tree_tag,
//tree_order_statistics_node_update>
//ordered_set;

const int maxn = 1002;
char a[maxn][maxn], b[maxn][maxn];

int main()
{
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // LOCAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int t;
    cin >> t;
    for(int ii = 0; ii < t; ++ii)
    {
        int n, m;
        cin >> n >> m;
        bool f = false;
        if (n > m)
        {
            swap(n, m);
            f = true;
        }
        int ans = 0;
//        if (n % 2 == 0 && m % 2 == 1)
//        {
//
//        }
        if (n % 2 == 1 && m % 2 == 1)
        {
            for(int i = n / 2 + 1; i < n; ++i)
            {
                for(int j = 0; j <= m / 2; ++j)
                    a[i][j] = '+';
                for(int j = m / 2 + 1; j < m; ++j)
                    a[i][j] = '-';
            }
            for(int i = 0; i < n / 2; ++i)
            {
                for(int j = 0; j < m / 2 - int(m % 2 == 0); ++j)
                    a[i][j] = '-';
                for(int j = m / 2 - int(m % 2 == 0); j < m; ++j)
                    a[i][j] = '+';
            }
            for(int j = 0; j < m; ++j)
                a[n / 2][j] = '-';
        }
        else
        {
            for(int i = 0; i <= n / 2; ++i)
                for(int j = 0; j < m; ++j)
                    a[i][j] = '-';
            for(int i = n / 2 + 1; i < n; ++i)
                for(int j = 0; j < m; ++j)
                    a[i][j] = '+';
        }
        if (f)
        {
            for(int i = 0; i < n; ++i)
                for(int j = 0; j < m; ++j)
                    b[i][j] = a[i][j];
            swap(n, m);
            for(int i = 0; i < n; ++i)
                for(int j = 0; j < m; ++j)
            {
                if (b[j][i] == '-') a[i][j] = '+';
                    else            a[i][j] = '-';
            }
        }
        for(int i = 0; i < n; ++i)
        {
            int k = 0;
            for(int j = 0; j < m; ++j)
                if (a[i][j] == '+') ++k;
            if (k * 2 > m) ++ans;
        }
        for(int j = 0; j < m; ++j)
        {
            int k = 0;
            for(int i = 0; i < n; ++i)
                if (a[i][j] == '-') ++k;
            if (k * 2 > n) ++ans;
        }
        cout << ans << '\n';
        for(int i = 0; i < n; ++i)
        {
            for(int j = 0; j < m; ++j)
                cout << a[i][j];
            cout << '\n';
        }
    }
    return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 380 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 3 ms 380 KB Output is correct
4 Incorrect 4 ms 508 KB Wrong answer in test 38 5: 40 < 41

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 1528 KB Output is correct
2 Correct 34 ms 2296 KB Output is correct
3 Correct 29 ms 2808 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 1528 KB Wrong answer in test 24 24: 35 < 44
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 3 ms 380 KB Output is correct
4 Incorrect 4 ms 508 KB Wrong answer in test 38 5: 40 < 41