oj.uz

Submission #424183

# Submission time Handle Problem Language Result Execution time Memory
424183 2021-06-11T17:46:20 Z doowey Red-blue table (IZhO19_stones) C++14
54 / 100
 67 ms 2904 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int N = 1010;


vector<vector<char>> get(int n, int m, int &sol){
    vector<vector<char>> sos;
    sos.resize(n);
    for(int i = 0 ; i < n; i ++ ){
        for(int j = 0 ; j < m ; j ++ ){
            sos[i].push_back('-');
        }
    }
    for(int i = 0 ; i < n; i ++ ){
        for(int j = 0; j < (m + 2) / 2; j ++ ){
            sos[i][j] = '+';
        }
    }
    int xx;
    int take;
    if(m % 2 == 1){
        take = m/2 - 1;
    }
    else{
        take = (m+2)/2 - 4;
    }
    for(int jj = 0 ; jj < take; jj ++ ){
        xx = jj-1;
        for(int id = 0; id < (n + 2) / 2; id ++ ){
            xx ++ ;
            xx %= (m - 1)/2;
            sos[id][jj] = '-';
            sos[id][xx+(m+2)/2] = '+';
        }
    }
    sol = 0;
    int cnt;
    for(int i = 0 ; i < n; i ++ ){
        cnt = 0;
        for(int j = 0 ; j < m ; j ++ ){
            if(sos[i][j] == '+'){
                cnt ++ ;
            }
        }
        if(cnt >= (m + 2) / 2){
            sol ++ ;
        }
    }
    for(int j = 0 ; j < m ; j ++ ){
        cnt = 0;
        for(int i = 0 ; i < n; i ++ ){
            if(sos[i][j] == '-'){
                cnt ++ ;
            }
        }
        if(cnt >= (n + 2) / 2){
            sol ++ ;
        }
    }
    return sos;
}

void solve(){
    int n, m;
    cin >> n >> m;
    int res1 = 0;
    int res2 = 0;
    vector<vector<char>> s1 = get(n, m, res1);
    vector<vector<char>> s2 = get(m, n, res2);
    if(res1 >= res2){
        cout << res1 << "\n";
        for(auto x : s1){
            for(auto y : x){
                cout << y;
            }
            cout << "\n";
        }
    }
    else{
        cout << res2 << "\n";
        for(int i = 0 ; i < n; i ++ ){
            for(int j = 0 ; j < m ; j ++ ){
                if(s2[j][i] == '-'){
                    s2[j][i] = '+';
                }
                else{
                    s2[j][i] = '-';
                }
                cout << s2[j][i];
            }
            cout << "\n";
        }

    }
}

int main(){
    fastIO;
    //freopen("in.txt","r",stdin);
    int tc;
    cin >> tc;
    for(int iq = 1; iq <= tc; iq ++ ){
        solve();
    }
    return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 332 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 5 ms 332 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 1280 KB Output is correct
2 Correct 58 ms 2628 KB Output is correct
3 Correct 52 ms 2904 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 61 ms 1368 KB Wrong answer in test 6 6: 8 < 9
2 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 2 ms 332 KB Output is correct
4 Correct 5 ms 332 KB Output is correct
5 Correct 67 ms 1280 KB Output is correct
6 Correct 58 ms 2628 KB Output is correct
7 Correct 52 ms 2904 KB Output is correct
8 Incorrect 61 ms 1368 KB Wrong answer in test 6 6: 8 < 9
9 Halted 0 ms 0 KB -