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Submission #475211

# Submission time Handle Problem Language Result Execution time Memory
475211 2021-09-21T13:16:50 Z MohamedAhmed04 Bosses (BOI16_bosses) C++14
100 / 100
 788 ms 628 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 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 416 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 416 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 416 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 412 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 416 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 416 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 412 KB Output is correct
12 Correct 5 ms 588 KB Output is correct
13 Correct 4 ms 460 KB Output is correct
14 Correct 160 ms 528 KB Output is correct
15 Correct 8 ms 460 KB Output is correct
16 Correct 579 ms 628 KB Output is correct
17 Correct 771 ms 628 KB Output is correct
18 Correct 788 ms 628 KB Output is correct