oj.uz

Submission #908544

# Submission time Handle Problem Language Result Execution time Memory
908544 2024-01-16T14:02:19 Z SalihSahin Red-blue table (IZhO19_stones) C++17
100 / 100
 67 ms 2240 KB 
#include<bits/stdc++.h>
#define int long long
#define pb push_back
#define mp make_pair
using namespace std;
 
const int mod = 1e9 + 7;
const int inf = 1e12*2;
const int N = 2e5 + 5;
 
int32_t main(){
    cin.tie(0); cout.tie(0);
    ios_base::sync_with_stdio(false);
    int t;
    cin>>t;
    while(t--){
        int n, m;
        cin>>n>>m;
        int type1 = n + ((m - (m/2 + 1)) * n) / (n/2 + 1);
        int type2 = m + ((n - (n/2 + 1)) * m) / (m/2 + 1);

        cout<<max(type1, type2)<<endl;

        if(type1 >= type2){
            vector<vector<char> > a(n, vector<char>(m, '+'));
            int cnt = n/2 + 1;
            int limit = m - (m/2 + 1);

            priority_queue<pair<int, int> > pq;
            for(int i = 0; i < n; i++){
                if(limit == 0) break;
                pq.push(mp(0LL, i));
            }


            for(int j = 0; j < m; j++){
                for(int i = 0; i < cnt; i++){
                    if(!pq.size()) break;
                    int xc = pq.top().first * (-1), pos = pq.top().second;
                    a[pos][j] = '-';
                    xc++;
                    pq.pop();
                    if(xc < limit) pq.push(mp(xc * (-1), pos));
                }
            }

            for(int i = 0; i < n; i++){
                for(int j = 0; j < m; j++){
                    cout<<a[i][j];
                }
                cout<<endl;
            }
        }
        else{
            vector<vector<char> > a(n, vector<char>(m, '-'));
            int cnt = m/2 + 1;
            int limit = n - (n/2 + 1);

            priority_queue<pair<int, int> > pq;
            for(int i = 0; i < m; i++){
                if(limit == 0) break;
                pq.push(mp(0LL, i));
            }


            for(int j = 0; j < n; j++){
                for(int i = 0; i < cnt; i++){
                    if(!pq.size()) break;
                    int xc = pq.top().first * (-1), pos = pq.top().second;
                    a[j][pos] = '+';
                    xc++;
                    pq.pop();
                    if(xc < limit) pq.push(mp(xc * (-1), pos));
                }
            }

            for(int i = 0; i < n; i++){
                for(int j = 0; j < m; j++){
                    cout<<a[i][j];
                }
                cout<<endl;
            }
        }
    }
    return 0;
}

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 460 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 348 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 10 ms 344 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 1364 KB Output is correct
2 Correct 45 ms 1876 KB Output is correct
3 Correct 42 ms 1992 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 1360 KB Output is correct
2 Correct 41 ms 1616 KB Output is correct
3 Correct 37 ms 1368 KB Output is correct

Subtask #6
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 10 ms 344 KB Output is correct
5 Correct 67 ms 1364 KB Output is correct
6 Correct 45 ms 1876 KB Output is correct
7 Correct 42 ms 1992 KB Output is correct
8 Correct 54 ms 1360 KB Output is correct
9 Correct 41 ms 1616 KB Output is correct
10 Correct 37 ms 1368 KB Output is correct
11 Correct 25 ms 704 KB Output is correct
12 Correct 47 ms 1468 KB Output is correct
13 Correct 43 ms 1356 KB Output is correct
14 Correct 31 ms 1212 KB Output is correct
15 Correct 48 ms 2240 KB Output is correct
16 Correct 38 ms 1880 KB Output is correct
17 Correct 17 ms 1116 KB Output is correct