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Submission #397164

# Submission time Handle Problem Language Result Execution time Memory
397164 2021-05-01T16:05:40 Z giorgikob Bosses (BOI16_bosses) C++14
100 / 100
 844 ms 24032 KB 
#include<bits/stdc++.h>
#define ll long long
#define ff first
#define ss second
#define pb push_back
using namespace std;

const int N = 1e6+50, mod = 1e9+7, K = 31;

int n,k,x;
ll answer,res;
vector<int>gr[N];
bool fix[N];
int cnt = 0;

void bfs(int x){

    queue<pair<int,int>>q;
    q.push({x,1});
    fix[x] = 1;

    while(q.size()){
        auto p = q.front();
        q.pop();
        int x = p.ff;
        int h = p.ss;
        cnt++;
        res += h;
        for(auto to : gr[x]){
            if(fix[to]) continue;
            q.push({to,h+1});
            fix[to] = 1;
        }
    }
}

inline void test_case(){
    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> k;
        for(int j = 1; j <= k; j++){
            cin >> x;
            //v[i].pb(x);
            gr[x].pb(i);
        }
    }

    ll answer = 1e18;
    for(int i = 1; i <= n; i++){
        bfs(i);
        if(cnt == n)answer = min(answer, res);
        res = 0;
        cnt = 0;
        for(int j = 1; j <= n; j++) fix[j] = 0;
    }

    cout << answer << endl;
}
 main(){
    ios::sync_with_stdio(0);

    int T = 1;
    //cin >> T;
    for(int i = 1; i <= T; i++){
        test_case();
    }
}

Compilation message

bosses.cpp:59:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   59 |  main(){
      |       ^

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23692 KB Output is correct
2 Correct 13 ms 23756 KB Output is correct
3 Correct 14 ms 23812 KB Output is correct
4 Correct 14 ms 23808 KB Output is correct
5 Correct 14 ms 23808 KB Output is correct
6 Correct 14 ms 23756 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23692 KB Output is correct
2 Correct 13 ms 23756 KB Output is correct
3 Correct 14 ms 23812 KB Output is correct
4 Correct 14 ms 23808 KB Output is correct
5 Correct 14 ms 23808 KB Output is correct
6 Correct 14 ms 23756 KB Output is correct
7 Correct 14 ms 23756 KB Output is correct
8 Correct 15 ms 23756 KB Output is correct
9 Correct 13 ms 23800 KB Output is correct
10 Correct 13 ms 23740 KB Output is correct
11 Correct 14 ms 23884 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 23692 KB Output is correct
2 Correct 13 ms 23756 KB Output is correct
3 Correct 14 ms 23812 KB Output is correct
4 Correct 14 ms 23808 KB Output is correct
5 Correct 14 ms 23808 KB Output is correct
6 Correct 14 ms 23756 KB Output is correct
7 Correct 14 ms 23756 KB Output is correct
8 Correct 15 ms 23756 KB Output is correct
9 Correct 13 ms 23800 KB Output is correct
10 Correct 13 ms 23740 KB Output is correct
11 Correct 14 ms 23884 KB Output is correct
12 Correct 18 ms 23884 KB Output is correct
13 Correct 16 ms 23860 KB Output is correct
14 Correct 198 ms 23908 KB Output is correct
15 Correct 28 ms 23816 KB Output is correct
16 Correct 667 ms 24012 KB Output is correct
17 Correct 844 ms 24012 KB Output is correct
18 Correct 836 ms 24032 KB Output is correct