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Submission #640118

# Submission time Handle Problem Language Result Execution time Memory
640118 2022-09-13T16:58:40 Z dant Bosses (BOI16_bosses) C++14
100 / 100
 626 ms 652 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX = 5005 ;
int vis[MAX] ;
long long cost = 0;

vector< vector<int> >adj(MAX) ;

int n , cnt = 0 ;

void bfs(int src)
{
    queue< pair<int , int> >q ;
    q.push({src , 1}) ;
    vis[src] = 1 ;
    while(!q.empty())
    {
        pair<int , int>p = q.front() ;
        q.pop() ;
        cnt++ ;
        int node = p.first ;
        cost += (p.second * 1ll) ;
        for(auto &child : adj[node])
        {
            if(vis[child] == 1)
                continue ;
            vis[child] = 1 ;
            q.push({child , p.second+1}) ;
        }
    }
    return ;
}

int main()
{
    scanf("%d" , &n) ;
    for(int i = 1 ; i <= n ; ++i)
    {
        int m ;
        scanf("%d" , &m) ;
        while(m--)
        {
            int x ;
            scanf("%d" , &x) ;
            adj[x].push_back(i) ;
        }
    }
    long long ans = 1e18 ;
    for(int i = 1 ; i <= n ; ++i)
    {
        memset(vis , 0 , sizeof(vis)) ;
        cnt = 0 , cost = 0;
        bfs(i) ;
        if(cnt != n)
            continue;
        ans = min(ans , cost) ;
    }
    return printf("%lld" , ans) , 0 ;
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     scanf("%d" , &n) ;
      |     ~~~~~^~~~~~~~~~~
bosses.cpp:42:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   42 |         scanf("%d" , &m) ;
      |         ~~~~~^~~~~~~~~~~
bosses.cpp:46:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   46 |             scanf("%d" , &x) ;
      |             ~~~~~^~~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 428 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 428 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 420 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 428 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 420 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 4 ms 468 KB Output is correct
13 Correct 4 ms 468 KB Output is correct
14 Correct 147 ms 528 KB Output is correct
15 Correct 5 ms 500 KB Output is correct
16 Correct 487 ms 620 KB Output is correct
17 Correct 622 ms 652 KB Output is correct
18 Correct 626 ms 640 KB Output is correct