oj.uz

Submission #842438

# Submission time Handle Problem Language Result Execution time Memory
842438 2023-09-02T21:45:12 Z Bula T-Covering (eJOI19_covering) C++17
100 / 100
 244 ms 72908 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define ff first
#define sc second
#define int ll
const int mod = 1e9 + 7, N = 1e6 + 1;
vector< vector<int> > x, s;
int n, m;
vector<int> v[N], vis(N), p;
int cnt = 0, cnt1 = 0;
void dfs(int u){
    cnt++;
    vis[u] = 1;
    int a = u / m;
    if(u % m != 0) a++;
    int b = u % m;
    if(b == 0) b = m;
    if(s[a][b] == 0){
        p.pb(x[a][b]);
    }else{
        cnt1++;
    }
    for(auto to : v[u]){
        if(vis[to] == 0) dfs(to);
    }
}
 
main(){
    ios::sync_with_stdio(0);
    cin.tie(0),cout.tie(0);
    cin >> n >> m;
    x.resize(n + 1);
    s.resize(n + 1);
    for(int i = 1; i <= n; i++){
        x[i].resize(m + 1);
        s[i].resize(m + 1);
        for(int j = 1; j <= m; j++){
            cin >> x[i][j];
        }
    }
    int k;
    cin >> k;
    int ans = 0;
    for(int i = 1; i <= k; i++){
        int a, b;
        cin >> a >> b;
        a++;b++;
        ans += x[a][b];
        s[a][b] = 1;
        vector< pair<int, int> > l = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
        for(auto t : l){
            int a1 = a + t.ff;
            int b1 = b + t.sc;
            if(a1 < 1 || a1 > n || b1 < 1 || b1 > m) continue;
            v[(a - 1) * m + b].pb((a1 - 1) * m + b1);
            v[(a1 - 1) * m + b1].pb((a - 1) * m + b);       
        }
    }
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= m; j++){
            if(s[i][j] == 0 || vis[(i - 1) * m + j] == 1) continue;
            dfs((i - 1) * m + j);
            if(cnt < cnt1 * 4){
                cout << "No" << endl;
                return 0;
            }
            sort(rall(p));
            for(int i = 0; i < cnt1 * 3; i++) ans += p[i];
            cnt = 0;
            cnt1 = 0;
            p.clear();
        }
    }
    cout << ans << endl;
}

Compilation message

covering.cpp:33:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   33 | main(){
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 31832 KB Output is correct
2 Correct 9 ms 32092 KB Output is correct
3 Correct 16 ms 33372 KB Output is correct
4 Correct 24 ms 36692 KB Output is correct
5 Correct 61 ms 47444 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 31836 KB Output is correct
2 Correct 8 ms 32092 KB Output is correct
3 Correct 13 ms 33368 KB Output is correct
4 Correct 23 ms 36472 KB Output is correct
5 Correct 71 ms 47472 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31836 KB Output is correct
2 Correct 9 ms 32116 KB Output is correct
3 Correct 12 ms 33156 KB Output is correct
4 Correct 24 ms 36360 KB Output is correct
5 Correct 68 ms 47568 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31580 KB Output is correct
2 Correct 7 ms 31580 KB Output is correct
3 Correct 10 ms 32424 KB Output is correct
4 Correct 9 ms 32092 KB Output is correct
5 Correct 13 ms 33392 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31576 KB Output is correct
2 Correct 7 ms 31580 KB Output is correct
3 Correct 8 ms 31600 KB Output is correct
4 Correct 7 ms 31580 KB Output is correct
5 Correct 7 ms 31580 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 31832 KB Output is correct
2 Correct 9 ms 32092 KB Output is correct
3 Correct 16 ms 33372 KB Output is correct
4 Correct 24 ms 36692 KB Output is correct
5 Correct 61 ms 47444 KB Output is correct
6 Correct 8 ms 31836 KB Output is correct
7 Correct 8 ms 32092 KB Output is correct
8 Correct 13 ms 33368 KB Output is correct
9 Correct 23 ms 36472 KB Output is correct
10 Correct 71 ms 47472 KB Output is correct
11 Correct 7 ms 31836 KB Output is correct
12 Correct 9 ms 32116 KB Output is correct
13 Correct 12 ms 33156 KB Output is correct
14 Correct 24 ms 36360 KB Output is correct
15 Correct 68 ms 47568 KB Output is correct
16 Correct 7 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 10 ms 32424 KB Output is correct
19 Correct 9 ms 32092 KB Output is correct
20 Correct 13 ms 33392 KB Output is correct
21 Correct 8 ms 31836 KB Output is correct
22 Correct 8 ms 32088 KB Output is correct
23 Correct 13 ms 33412 KB Output is correct
24 Correct 23 ms 36388 KB Output is correct
25 Correct 66 ms 47472 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 31832 KB Output is correct
2 Correct 9 ms 32092 KB Output is correct
3 Correct 16 ms 33372 KB Output is correct
4 Correct 24 ms 36692 KB Output is correct
5 Correct 61 ms 47444 KB Output is correct
6 Correct 8 ms 31836 KB Output is correct
7 Correct 8 ms 32092 KB Output is correct
8 Correct 13 ms 33368 KB Output is correct
9 Correct 23 ms 36472 KB Output is correct
10 Correct 71 ms 47472 KB Output is correct
11 Correct 7 ms 31836 KB Output is correct
12 Correct 9 ms 32116 KB Output is correct
13 Correct 12 ms 33156 KB Output is correct
14 Correct 24 ms 36360 KB Output is correct
15 Correct 68 ms 47568 KB Output is correct
16 Correct 7 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 10 ms 32424 KB Output is correct
19 Correct 9 ms 32092 KB Output is correct
20 Correct 13 ms 33392 KB Output is correct
21 Correct 7 ms 31576 KB Output is correct
22 Correct 7 ms 31580 KB Output is correct
23 Correct 8 ms 31600 KB Output is correct
24 Correct 7 ms 31580 KB Output is correct
25 Correct 7 ms 31580 KB Output is correct
26 Correct 8 ms 31836 KB Output is correct
27 Correct 8 ms 32088 KB Output is correct
28 Correct 13 ms 33412 KB Output is correct
29 Correct 23 ms 36388 KB Output is correct
30 Correct 66 ms 47472 KB Output is correct
31 Correct 244 ms 72908 KB Output is correct
32 Correct 63 ms 48564 KB Output is correct
33 Correct 75 ms 51200 KB Output is correct
34 Correct 66 ms 48516 KB Output is correct
35 Correct 140 ms 59324 KB Output is correct