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Submission #107345

# Submission time Handle Problem Language Result Execution time Memory
107345 2019-04-23T12:04:56 Z MohamedAhmed0 Bosses (BOI16_bosses) C++14
67 / 100
 1500 ms 98812 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAX = 5005 ;
int vis[MAX] , par[MAX][MAX] , can[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] = src ;
    par[src][src] = 0 ;
    while(!q.empty())
    {
        int node = q.front() ;
        q.pop() ;
        cnt++ ;
        for(auto &child : adj[node])
        {
            if(vis[child] == src)
                continue ;
            vis[child] = src ;
            par[src][child] = node ;
            q.push(child) ;
        }
    }
    return ;
}

int src ;

void dfs(int node)
{
    for(auto &child : adj[node])
    {
        if(par[src][child] == node)
        {
            dfs(child) ;
            dp[node] += dp[child] ;
        }
    }
    dp[node]++;
    cost += dp[node] * 1ll;
    return ;
}

int readint()
{
    char c ;
    c = getchar() ;
    while(true)
    {
        if(c >= '0' && c <= '9')
            break ;
        c = getchar() ;
    }
    int result = (c - '0') ;
    c = getchar() ;
    while(true)
    {
        if(c < '0' || c > '9')
            break ;
        result = result * 10 + (c - '0') ;
        c = getchar() ;
    }
    return result ;
}

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

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 896 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 896 KB Output is correct
11 Correct 3 ms 896 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 512 KB Output is correct
2 Correct 3 ms 512 KB Output is correct
3 Correct 3 ms 512 KB Output is correct
4 Correct 2 ms 512 KB Output is correct
5 Correct 3 ms 512 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 896 KB Output is correct
8 Correct 3 ms 768 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 896 KB Output is correct
11 Correct 3 ms 896 KB Output is correct
12 Correct 14 ms 1508 KB Output is correct
13 Correct 7 ms 1280 KB Output is correct
14 Correct 190 ms 63608 KB Output is correct
15 Correct 37 ms 41336 KB Output is correct
16 Correct 673 ms 81016 KB Output is correct
17 Execution timed out 1552 ms 98812 KB Time limit exceeded
18 Halted 0 ms 0 KB -