oj.uz

답안 #107343

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
107343 2019-04-23T11:51:08 Z MohamedAhmed0 Bosses (BOI16_bosses) C++14
67 / 100
 1500 ms 768 KB 
#include <bits/stdc++.h>

using namespace std;

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

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

int n , cnt = 0 ;

void bfs(int src)
{
    queue<int>q ;
    q.push(src) ;
    vis[src] = 1 ;
    par[src] = 0 ;
    while(!q.empty())
    {
        int node = q.front() ;
        q.pop() ;
        cnt++ ;
        for(auto &child : adj[node])
        {
            if(vis[child] == 1)
                continue ;
            vis[child] = 1 ;
            par[child] = node ;
            q.push(child) ;
        }
    }
    return ;
}

void dfs(int node)
{
    for(auto &child : adj[node])
    {
        if(par[child] == node)
        {
            dfs(child) ;
            dp[node] += dp[child] ;
        }
    }
    dp[node]++;
    cost += dp[node] * 1ll;
    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)) ;
        memset(dp , 0 , sizeof(dp)) ;
        memset(par , 0 , sizeof(par)) ;
        cnt = 0 , cost = 0;
        bfs(i) ;
        if(cnt != n)
            continue;
        dfs(i) ;
        ans = min(ans , cost) ;
    }
    return printf("%lld" , ans) , 0 ;
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:53:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d" , &n) ;
     ~~~~~^~~~~~~~~~~
bosses.cpp:57:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d" , &m) ;
         ~~~~~^~~~~~~~~~~
bosses.cpp:61:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d" , &x) ;
             ~~~~~^~~~~~~~~~~

Subtask #1
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 3 ms 512 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 3 ms 512 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 3 ms 512 KB Output is correct

Subtask #3
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 2 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 3 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 2 ms 512 KB Output is correct
9 Correct 3 ms 512 KB Output is correct
10 Correct 3 ms 512 KB Output is correct
11 Correct 3 ms 512 KB Output is correct
12 Correct 10 ms 612 KB Output is correct
13 Correct 8 ms 640 KB Output is correct
14 Correct 127 ms 760 KB Output is correct
15 Correct 21 ms 640 KB Output is correct
16 Correct 584 ms 724 KB Output is correct
17 Execution timed out 1552 ms 768 KB Time limit exceeded
18 Halted 0 ms 0 KB -