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Submission #830050

# Submission time Handle Problem Language Result Execution time Memory
830050 2023-08-18T17:59:57 Z vjudge1 Red-blue table (IZhO19_stones) C++17
100 / 100
 35 ms 2272 KB 
#include <bits/stdc++.h>
using namespace std;

/// 123

int32_t main() {
        ios_base::sync_with_stdio(0);
        cin.tie(0);
        int t;
        cin >> t;
        while (t--) {
                int n, m;
                cin >> n >> m;
                int sw = 0;
                if (n < m) swap(n, m), sw = 1;
                vector<vector<char>> a(n, vector<char>(m, '+'));
                vector<int> cnt(n, m);
                int cur = 0;
                int k = n / 2 + 1;
                int res = n;
                for (int i = 0; i < m; i++) {
                        int ok = 1;
                        for (int j = 0; j < k; j++) {
                                if (cnt[cur] - 1 > m - cnt[cur] + 1) {
                                        cnt[cur]--;
                                        a[cur][i] = '-';
                                } else {
                                        ok = 0;
                                        break;
                                }
                                cur++;
                                cur %= n;
                        }
                        res += ok;
                }
                cout << res << '\n';
                for (int i = 0; i < (sw ? m : n); i++) {
                        for (int j = 0; j < (sw ? n : m); j++) {
                                cout << (char)(sw ? '-' ^ '+' ^ a[j][i] : a[i][j]);
                        }
                        cout << '\n';
                }
        }
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 1248 KB Output is correct
2 Correct 18 ms 1620 KB Output is correct
3 Correct 28 ms 1848 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 1364 KB Output is correct
2 Correct 25 ms 1456 KB Output is correct
3 Correct 22 ms 1216 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 35 ms 1248 KB Output is correct
6 Correct 18 ms 1620 KB Output is correct
7 Correct 28 ms 1848 KB Output is correct
8 Correct 20 ms 1364 KB Output is correct
9 Correct 25 ms 1456 KB Output is correct
10 Correct 22 ms 1216 KB Output is correct
11 Correct 7 ms 468 KB Output is correct
12 Correct 22 ms 1552 KB Output is correct
13 Correct 27 ms 1224 KB Output is correct
14 Correct 12 ms 1036 KB Output is correct
15 Correct 20 ms 2272 KB Output is correct
16 Correct 16 ms 1748 KB Output is correct
17 Correct 7 ms 980 KB Output is correct