oj.uz

Submission #668412

# Submission time Handle Problem Language Result Execution time Memory
668412 2022-12-03T20:09:03 Z YENGOYAN Red-blue table (IZhO19_stones) C++17
38 / 100
 55 ms 2104 KB 
#include <iostream>
#include <vector>

using namespace std;

int calc(vector<vector<char>>& v) {
    int cnt = 0;
    for (int i = 0; i < v.size(); i++) {
        int c = 0;
        for (int j = 0; j < v[i].size(); j++) {
            if (v[i][j] == '+') c++;
        }
        if (c > v[i].size() / 2) cnt++;
    }
    for (int j = 0; j < v[0].size(); j++) {
        int c = 0;
        for (int i = 0; i < v.size(); i++) {
            if (v[i][j] == '-') {
                c++;
            }
        }
        if (c > v.size() / 2) cnt++;
    }
    return cnt;
}

void solve() {
    int n, m; cin >> n >> m;
    if (min(m, n) <= 3 || (n <= 4 && m <= 4)) {
        if (n + (m + 1) / 2 - 1 > m + (n + 1) / 2 - 1) {
            cout << n + (m + 1) / 2 - 1 << endl;
            for (int i = 1; i <= n; i++) {
                for (int j = 1; j <= m; j++) {
                    if (j <= m / 2 + 1) cout << '+';
                    else cout << '-';
                }
                cout << "\n";
            }
        }
        else {
            cout << m + (n + 1) / 2 - 1 << endl;
            for (int i = 1; i <= n; i++) {
                for (int j = 1; j <= m; j++) {
                    if (i <= n / 2 + 1) cout << '-';
                    else cout << '+';
                }
                cout << "\n";
            }
        }
        return;
    }
    if (n % 2) cout << n + m - 2 << endl;
    else cout << n + m - 1 - (m + 1) / 2  - 1 << endl;
    vector<vector<char>> vec(n);
    for (int i = 0; i < m; i++) vec[0].push_back('-');
    //cout << endl;
    for (int i = 1; i < n; i++) {
        if (i % 2) {
            for (int j = 1; j <= m / 2 + 1; j++) vec[i].push_back('+');
            for (int j = m / 2 + 2; j <= m; j++) vec[i].push_back('-');
        }
        else {
            for (int j = m / 2 + 2; j <= m; j++) vec[i].push_back('-');
            for (int j = 1; j <= m / 2 + 1; j++) vec[i].push_back('+');
        }
        //cout << endl;
    }
    //if (calc(vec) != n + m - 3) {
        //cout << calc(vec) << endl;
        for (int i = 0; i < vec.size(); i++) {
            for (int j = 0; j < vec[i].size(); j++) {
                cout << vec[i][j];
            }
            cout << endl;
        }
    //}
    /*
        ----------------------------
        +++++++++++++++-------------
        -------------+++++++++++++++
        +++++++++++++++-------------
        -------------+++++++++++++++
 
    
    
    */
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL), cout.tie(NULL);
    int t; cin >> t; while (t--)
        solve();
}

Compilation message

stones.cpp: In function 'int calc(std::vector<std::vector<char> >&)':
stones.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < v.size(); i++) {
      |                     ~~^~~~~~~~~~
stones.cpp:10:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |         for (int j = 0; j < v[i].size(); j++) {
      |                         ~~^~~~~~~~~~~~~
stones.cpp:13:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |         if (c > v[i].size() / 2) cnt++;
      |             ~~^~~~~~~~~~~~~~~~~
stones.cpp:15:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     for (int j = 0; j < v[0].size(); j++) {
      |                     ~~^~~~~~~~~~~~~
stones.cpp:17:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |         for (int i = 0; i < v.size(); i++) {
      |                         ~~^~~~~~~~~~
stones.cpp:22:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         if (c > v.size() / 2) cnt++;
      |             ~~^~~~~~~~~~~~~~
stones.cpp: In function 'void solve()':
stones.cpp:70:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<char> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |         for (int i = 0; i < vec.size(); i++) {
      |                         ~~^~~~~~~~~~~~
stones.cpp:71:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |             for (int j = 0; j < vec[i].size(); j++) {
      |                             ~~^~~~~~~~~~~~~~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Incorrect 6 ms 340 KB in the table A+B is not equal to 14
5 Halted 0 ms 0 KB -

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 1240 KB Output is correct
2 Correct 24 ms 1680 KB Output is correct
3 Correct 27 ms 2104 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 41 ms 1336 KB Wrong answer in test 24 24: 34 < 44
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Incorrect 6 ms 340 KB in the table A+B is not equal to 14
5 Halted 0 ms 0 KB -