oj.uz

Submission #842434

# Submission time Handle Problem Language Result Execution time Memory
842434 2023-09-02T21:43:58 Z Bula T-Covering (eJOI19_covering) C++14
100 / 100
 280 ms 65732 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;
vector< vector<bool> > 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:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   34 | 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 31836 KB Output is correct
3 Correct 12 ms 32600 KB Output is correct
4 Correct 22 ms 34212 KB Output is correct
5 Correct 60 ms 39760 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31832 KB Output is correct
2 Correct 9 ms 31832 KB Output is correct
3 Correct 12 ms 32604 KB Output is correct
4 Correct 22 ms 34136 KB Output is correct
5 Correct 57 ms 39760 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31832 KB Output is correct
2 Correct 11 ms 31832 KB Output is correct
3 Correct 12 ms 32600 KB Output is correct
4 Correct 22 ms 34136 KB Output is correct
5 Correct 56 ms 39900 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31576 KB Output is correct
2 Correct 7 ms 31576 KB Output is correct
3 Correct 10 ms 32088 KB Output is correct
4 Correct 9 ms 32088 KB Output is correct
5 Correct 13 ms 32600 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 31576 KB Output is correct
3 Correct 7 ms 31576 KB Output is correct
4 Correct 8 ms 31576 KB Output is correct
5 Correct 7 ms 31576 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 31836 KB Output is correct
3 Correct 12 ms 32600 KB Output is correct
4 Correct 22 ms 34212 KB Output is correct
5 Correct 60 ms 39760 KB Output is correct
6 Correct 7 ms 31832 KB Output is correct
7 Correct 9 ms 31832 KB Output is correct
8 Correct 12 ms 32604 KB Output is correct
9 Correct 22 ms 34136 KB Output is correct
10 Correct 57 ms 39760 KB Output is correct
11 Correct 7 ms 31832 KB Output is correct
12 Correct 11 ms 31832 KB Output is correct
13 Correct 12 ms 32600 KB Output is correct
14 Correct 22 ms 34136 KB Output is correct
15 Correct 56 ms 39900 KB Output is correct
16 Correct 7 ms 31576 KB Output is correct
17 Correct 7 ms 31576 KB Output is correct
18 Correct 10 ms 32088 KB Output is correct
19 Correct 9 ms 32088 KB Output is correct
20 Correct 13 ms 32600 KB Output is correct
21 Correct 7 ms 31832 KB Output is correct
22 Correct 8 ms 31832 KB Output is correct
23 Correct 12 ms 32600 KB Output is correct
24 Correct 23 ms 34140 KB Output is correct
25 Correct 58 ms 39764 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 31836 KB Output is correct
3 Correct 12 ms 32600 KB Output is correct
4 Correct 22 ms 34212 KB Output is correct
5 Correct 60 ms 39760 KB Output is correct
6 Correct 7 ms 31832 KB Output is correct
7 Correct 9 ms 31832 KB Output is correct
8 Correct 12 ms 32604 KB Output is correct
9 Correct 22 ms 34136 KB Output is correct
10 Correct 57 ms 39760 KB Output is correct
11 Correct 7 ms 31832 KB Output is correct
12 Correct 11 ms 31832 KB Output is correct
13 Correct 12 ms 32600 KB Output is correct
14 Correct 22 ms 34136 KB Output is correct
15 Correct 56 ms 39900 KB Output is correct
16 Correct 7 ms 31576 KB Output is correct
17 Correct 7 ms 31576 KB Output is correct
18 Correct 10 ms 32088 KB Output is correct
19 Correct 9 ms 32088 KB Output is correct
20 Correct 13 ms 32600 KB Output is correct
21 Correct 7 ms 31576 KB Output is correct
22 Correct 7 ms 31576 KB Output is correct
23 Correct 7 ms 31576 KB Output is correct
24 Correct 8 ms 31576 KB Output is correct
25 Correct 7 ms 31576 KB Output is correct
26 Correct 7 ms 31832 KB Output is correct
27 Correct 8 ms 31832 KB Output is correct
28 Correct 12 ms 32600 KB Output is correct
29 Correct 23 ms 34140 KB Output is correct
30 Correct 58 ms 39764 KB Output is correct
31 Correct 280 ms 65732 KB Output is correct
32 Correct 58 ms 40784 KB Output is correct
33 Correct 67 ms 43984 KB Output is correct
34 Correct 61 ms 40784 KB Output is correct
35 Correct 134 ms 51660 KB Output is correct