oj.uz

Submission #842429

# Submission time Handle Problem Language Result Execution time Memory
842429 2023-09-02T21:40:27 Z Bula T-Covering (eJOI19_covering) C++14
100 / 100
 405 ms 73296 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(){
    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 31836 KB Output is correct
2 Correct 12 ms 32092 KB Output is correct
3 Correct 22 ms 33332 KB Output is correct
4 Correct 55 ms 36436 KB Output is correct
5 Correct 171 ms 47556 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 31836 KB Output is correct
2 Correct 15 ms 32088 KB Output is correct
3 Correct 21 ms 33116 KB Output is correct
4 Correct 52 ms 36552 KB Output is correct
5 Correct 166 ms 47460 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 31832 KB Output is correct
2 Correct 11 ms 32184 KB Output is correct
3 Correct 32 ms 33108 KB Output is correct
4 Correct 54 ms 36584 KB Output is correct
5 Correct 190 ms 47528 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 14 ms 32348 KB Output is correct
4 Correct 12 ms 32320 KB Output is correct
5 Correct 22 ms 33372 KB Output is correct

Subtask #5
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 31612 KB Output is correct
2 Correct 8 ms 31580 KB Output is correct
3 Correct 7 ms 31628 KB Output is correct
4 Correct 8 ms 31776 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 31836 KB Output is correct
2 Correct 12 ms 32092 KB Output is correct
3 Correct 22 ms 33332 KB Output is correct
4 Correct 55 ms 36436 KB Output is correct
5 Correct 171 ms 47556 KB Output is correct
6 Correct 9 ms 31836 KB Output is correct
7 Correct 15 ms 32088 KB Output is correct
8 Correct 21 ms 33116 KB Output is correct
9 Correct 52 ms 36552 KB Output is correct
10 Correct 166 ms 47460 KB Output is correct
11 Correct 9 ms 31832 KB Output is correct
12 Correct 11 ms 32184 KB Output is correct
13 Correct 32 ms 33108 KB Output is correct
14 Correct 54 ms 36584 KB Output is correct
15 Correct 190 ms 47528 KB Output is correct
16 Correct 7 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 14 ms 32348 KB Output is correct
19 Correct 12 ms 32320 KB Output is correct
20 Correct 22 ms 33372 KB Output is correct
21 Correct 8 ms 31836 KB Output is correct
22 Correct 16 ms 32112 KB Output is correct
23 Correct 29 ms 33444 KB Output is correct
24 Correct 58 ms 36520 KB Output is correct
25 Correct 154 ms 47600 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 31836 KB Output is correct
2 Correct 12 ms 32092 KB Output is correct
3 Correct 22 ms 33332 KB Output is correct
4 Correct 55 ms 36436 KB Output is correct
5 Correct 171 ms 47556 KB Output is correct
6 Correct 9 ms 31836 KB Output is correct
7 Correct 15 ms 32088 KB Output is correct
8 Correct 21 ms 33116 KB Output is correct
9 Correct 52 ms 36552 KB Output is correct
10 Correct 166 ms 47460 KB Output is correct
11 Correct 9 ms 31832 KB Output is correct
12 Correct 11 ms 32184 KB Output is correct
13 Correct 32 ms 33108 KB Output is correct
14 Correct 54 ms 36584 KB Output is correct
15 Correct 190 ms 47528 KB Output is correct
16 Correct 7 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 14 ms 32348 KB Output is correct
19 Correct 12 ms 32320 KB Output is correct
20 Correct 22 ms 33372 KB Output is correct
21 Correct 9 ms 31612 KB Output is correct
22 Correct 8 ms 31580 KB Output is correct
23 Correct 7 ms 31628 KB Output is correct
24 Correct 8 ms 31776 KB Output is correct
25 Correct 7 ms 31580 KB Output is correct
26 Correct 8 ms 31836 KB Output is correct
27 Correct 16 ms 32112 KB Output is correct
28 Correct 29 ms 33444 KB Output is correct
29 Correct 58 ms 36520 KB Output is correct
30 Correct 154 ms 47600 KB Output is correct
31 Correct 405 ms 73296 KB Output is correct
32 Correct 158 ms 48640 KB Output is correct
33 Correct 167 ms 51276 KB Output is correct
34 Correct 172 ms 48252 KB Output is correct
35 Correct 239 ms 59304 KB Output is correct