oj.uz

Submission #842430

# Submission time Handle Problem Language Result Execution time Memory
842430 2023-09-02T21:41:52 Z Bula T-Covering (eJOI19_covering) C++14
100 / 100
 239 ms 73020 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 7 ms 31832 KB Output is correct
2 Correct 9 ms 32092 KB Output is correct
3 Correct 12 ms 33372 KB Output is correct
4 Correct 23 ms 36444 KB Output is correct
5 Correct 60 ms 47540 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 32092 KB Output is correct
3 Correct 15 ms 33164 KB Output is correct
4 Correct 23 ms 36552 KB Output is correct
5 Correct 64 ms 47692 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 8 ms 32092 KB Output is correct
3 Correct 14 ms 33372 KB Output is correct
4 Correct 23 ms 36444 KB Output is correct
5 Correct 60 ms 47440 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 9 ms 32348 KB Output is correct
4 Correct 9 ms 32348 KB Output is correct
5 Correct 13 ms 33372 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 7 ms 31580 KB Output is correct
4 Correct 7 ms 31576 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 7 ms 31832 KB Output is correct
2 Correct 9 ms 32092 KB Output is correct
3 Correct 12 ms 33372 KB Output is correct
4 Correct 23 ms 36444 KB Output is correct
5 Correct 60 ms 47540 KB Output is correct
6 Correct 7 ms 31832 KB Output is correct
7 Correct 9 ms 32092 KB Output is correct
8 Correct 15 ms 33164 KB Output is correct
9 Correct 23 ms 36552 KB Output is correct
10 Correct 64 ms 47692 KB Output is correct
11 Correct 7 ms 31836 KB Output is correct
12 Correct 8 ms 32092 KB Output is correct
13 Correct 14 ms 33372 KB Output is correct
14 Correct 23 ms 36444 KB Output is correct
15 Correct 60 ms 47440 KB Output is correct
16 Correct 7 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 9 ms 32348 KB Output is correct
19 Correct 9 ms 32348 KB Output is correct
20 Correct 13 ms 33372 KB Output is correct
21 Correct 8 ms 31832 KB Output is correct
22 Correct 8 ms 32128 KB Output is correct
23 Correct 12 ms 33372 KB Output is correct
24 Correct 24 ms 36444 KB Output is correct
25 Correct 60 ms 47644 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 31832 KB Output is correct
2 Correct 9 ms 32092 KB Output is correct
3 Correct 12 ms 33372 KB Output is correct
4 Correct 23 ms 36444 KB Output is correct
5 Correct 60 ms 47540 KB Output is correct
6 Correct 7 ms 31832 KB Output is correct
7 Correct 9 ms 32092 KB Output is correct
8 Correct 15 ms 33164 KB Output is correct
9 Correct 23 ms 36552 KB Output is correct
10 Correct 64 ms 47692 KB Output is correct
11 Correct 7 ms 31836 KB Output is correct
12 Correct 8 ms 32092 KB Output is correct
13 Correct 14 ms 33372 KB Output is correct
14 Correct 23 ms 36444 KB Output is correct
15 Correct 60 ms 47440 KB Output is correct
16 Correct 7 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 9 ms 32348 KB Output is correct
19 Correct 9 ms 32348 KB Output is correct
20 Correct 13 ms 33372 KB Output is correct
21 Correct 7 ms 31576 KB Output is correct
22 Correct 7 ms 31580 KB Output is correct
23 Correct 7 ms 31580 KB Output is correct
24 Correct 7 ms 31576 KB Output is correct
25 Correct 7 ms 31580 KB Output is correct
26 Correct 8 ms 31832 KB Output is correct
27 Correct 8 ms 32128 KB Output is correct
28 Correct 12 ms 33372 KB Output is correct
29 Correct 24 ms 36444 KB Output is correct
30 Correct 60 ms 47644 KB Output is correct
31 Correct 239 ms 73020 KB Output is correct
32 Correct 65 ms 48464 KB Output is correct
33 Correct 75 ms 51152 KB Output is correct
34 Correct 63 ms 48464 KB Output is correct
35 Correct 134 ms 59316 KB Output is correct