oj.uz

Submission #842425

# Submission time Handle Problem Language Result Execution time Memory
842425 2023-09-02T21:35:08 Z Bula T-Covering (eJOI19_covering) C++14
100 / 100
 509 ms 75112 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;
int n, m;
vector<int> v[N], vis(N), p;
set<int> st;
int cnt = 0, cnt1 = 0;
void dfs(int u){
    cnt++;
    vis[u] = 1;
    if(st.find(u) == st.end()){
        int a = u / m;
        if(u % m != 0) a++;
        int b = u % m;
        if(b == 0) b = m;
        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);
    for(int i = 1; i <= n; i++){
        x[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];
        st.insert((a - 1) * m + b);
        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(st.find((i - 1) * m + j) == st.end() || 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 9 ms 31832 KB Output is correct
2 Correct 12 ms 32092 KB Output is correct
3 Correct 23 ms 32860 KB Output is correct
4 Correct 57 ms 34984 KB Output is correct
5 Correct 165 ms 41784 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 13 ms 32092 KB Output is correct
3 Correct 24 ms 32800 KB Output is correct
4 Correct 57 ms 34896 KB Output is correct
5 Correct 167 ms 41808 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 13 ms 32120 KB Output is correct
3 Correct 23 ms 32920 KB Output is correct
4 Correct 56 ms 34896 KB Output is correct
5 Correct 169 ms 41692 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 31580 KB Output is correct
2 Correct 7 ms 31580 KB Output is correct
3 Correct 15 ms 32332 KB Output is correct
4 Correct 12 ms 32092 KB Output is correct
5 Correct 24 ms 33100 KB Output is correct

Subtask #5
15.0 / 15.0

# 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 7 ms 31576 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 9 ms 31832 KB Output is correct
2 Correct 12 ms 32092 KB Output is correct
3 Correct 23 ms 32860 KB Output is correct
4 Correct 57 ms 34984 KB Output is correct
5 Correct 165 ms 41784 KB Output is correct
6 Correct 9 ms 31836 KB Output is correct
7 Correct 13 ms 32092 KB Output is correct
8 Correct 24 ms 32800 KB Output is correct
9 Correct 57 ms 34896 KB Output is correct
10 Correct 167 ms 41808 KB Output is correct
11 Correct 9 ms 31832 KB Output is correct
12 Correct 13 ms 32120 KB Output is correct
13 Correct 23 ms 32920 KB Output is correct
14 Correct 56 ms 34896 KB Output is correct
15 Correct 169 ms 41692 KB Output is correct
16 Correct 8 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 15 ms 32332 KB Output is correct
19 Correct 12 ms 32092 KB Output is correct
20 Correct 24 ms 33100 KB Output is correct
21 Correct 8 ms 31836 KB Output is correct
22 Correct 12 ms 32092 KB Output is correct
23 Correct 23 ms 32852 KB Output is correct
24 Correct 56 ms 34900 KB Output is correct
25 Correct 165 ms 41852 KB Output is correct

Subtask #7
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 31832 KB Output is correct
2 Correct 12 ms 32092 KB Output is correct
3 Correct 23 ms 32860 KB Output is correct
4 Correct 57 ms 34984 KB Output is correct
5 Correct 165 ms 41784 KB Output is correct
6 Correct 9 ms 31836 KB Output is correct
7 Correct 13 ms 32092 KB Output is correct
8 Correct 24 ms 32800 KB Output is correct
9 Correct 57 ms 34896 KB Output is correct
10 Correct 167 ms 41808 KB Output is correct
11 Correct 9 ms 31832 KB Output is correct
12 Correct 13 ms 32120 KB Output is correct
13 Correct 23 ms 32920 KB Output is correct
14 Correct 56 ms 34896 KB Output is correct
15 Correct 169 ms 41692 KB Output is correct
16 Correct 8 ms 31580 KB Output is correct
17 Correct 7 ms 31580 KB Output is correct
18 Correct 15 ms 32332 KB Output is correct
19 Correct 12 ms 32092 KB Output is correct
20 Correct 24 ms 33100 KB Output is correct
21 Correct 7 ms 31580 KB Output is correct
22 Correct 7 ms 31580 KB Output is correct
23 Correct 7 ms 31576 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 12 ms 32092 KB Output is correct
28 Correct 23 ms 32852 KB Output is correct
29 Correct 56 ms 34900 KB Output is correct
30 Correct 165 ms 41852 KB Output is correct
31 Correct 509 ms 75112 KB Output is correct
32 Correct 191 ms 43004 KB Output is correct
33 Correct 188 ms 45268 KB Output is correct
34 Correct 177 ms 43052 KB Output is correct
35 Correct 302 ms 56520 KB Output is correct