oj.uz

Submission #899128

# Submission time Handle Problem Language Result Execution time Memory
899128 2024-01-05T13:51:33 Z davit_tsibadze Red-blue table (IZhO19_stones) C++17
100 / 100
 27 ms 2204 KB 
#pragma GCC optimize("Ofast")
#pragma GCC target ("sse4")
#include <map>
#include <set>
#include <cmath>
#include <queue>
#include <vector>
#include <iomanip>
#include <cstring>
#include <limits.h>
#include <iostream>
#include <string.h>
#include <algorithm>
using namespace std;

#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define ull unsigned long long

const ll inf = 1e18;
const ll mod = 1e9 + 7;
const ll wmod = 998244353;
#define int long long

void solve(){
    int n, m;
    cin >> n >> m;
    char a[n + 1][m + 1];
    if (n >= m){
        for (int i = 1; i <= n; i++){
            for (int j = 1; j <= m; j++){
                a[i][j] = '+';
            }
        }
        int arr[n + 1] = {};
        int l = 1, i = 1, cnt = n / 2 + 1, cur = 0;
        while(i <= m){
            if (arr[l] < (m - 1) / 2){
                a[l][i] = '-'; arr[l]++; cur++;
            }else break;
            if (cur % cnt == 0)i++;
            if (l == n)l = 1;
            else l++;
        }
    }else {
        for (int i = 1; i <= n; i++){
            for (int j = 1; j <= m; j++){
                a[i][j] = '-';
            }
        }
        int arr[m + 1] = {};
        int l = 1, i = 1, cnt = m / 2 + 1, cur = 0;
        while(i <= n){
            if (arr[l] < (n - 1) / 2){
                a[i][l] = '+'; arr[l]++; cur++;
            }else break;
            if (cur % cnt == 0)i++;
            if (l == m)l = 1;
            else l++;
        }
    }
    int ans = 0;
    for (int i = 1; i <= n; i++){
        int cnt = 0;
        for (int j = 1; j <= m; j++){
            cnt += (a[i][j] == '+');
        }
        if (cnt > m - cnt)ans++;
    }
    for (int j = 1; j <= m; j++){
        int cnt = 0;
        for (int i = 1; i <= n; i++){
            cnt += (a[i][j] == '-');
        }
        if (cnt > n - cnt)ans++;
    }
    cout << ans << '\n';
    for (int i = 1; i <= n; i++){
        for (int j = 1; j <= m; j++){
            cout << a[i][j];
        }cout << '\n';
    }
}
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);

    ll T = 1;
    cin >> T;
    while(T--){
        solve();
    }
    return 0;
}

Subtask #1
17.0 / 17.0

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

Subtask #3
16.0 / 16.0

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

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 1392 KB Output is correct
2 Correct 23 ms 1880 KB Output is correct
3 Correct 18 ms 1884 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 1332 KB Output is correct
2 Correct 23 ms 1520 KB Output is correct
3 Correct 24 ms 1372 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 27 ms 1392 KB Output is correct
6 Correct 23 ms 1880 KB Output is correct
7 Correct 18 ms 1884 KB Output is correct
8 Correct 24 ms 1332 KB Output is correct
9 Correct 23 ms 1520 KB Output is correct
10 Correct 24 ms 1372 KB Output is correct
11 Correct 5 ms 604 KB Output is correct
12 Correct 19 ms 1728 KB Output is correct
13 Correct 17 ms 1372 KB Output is correct
14 Correct 14 ms 1116 KB Output is correct
15 Correct 24 ms 2204 KB Output is correct
16 Correct 16 ms 1852 KB Output is correct
17 Correct 11 ms 856 KB Output is correct