제출 #91974

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
91974		Kamisama	Bosses (BOI16_bosses)	C++14	100 / 100	565 ms	760 KiB

bosses

#include <iostream>
#include <cstdio>
#include <vector>
#include <queue>

using namespace std;
const int maxn=5e3+7;

int n,h[maxn],res;
vector<int> adj[maxn];

inline void Bfs(const int &root){
    queue<int> q;
    fill(h,h+n+1,0);
    h[root]=1;
    int sum=1,nEdges=0;
    q.push(root);
    while(q.size()){
        int u=q.front();
        q.pop();
        for(int v: adj[u]){
            if(h[v]) continue;
            nEdges++;
            h[v]=h[u]+1;
            sum+=h[v];
            q.push(v);
        }
    }
    if(nEdges==n-1) res=min(res,sum);
}

inline void Read(int &x){
    register char c;
    for(c=getchar();c>'9'||c<'0';c=getchar());
    for(x=0;'0'<=c&&c<='9';c=getchar()) x=10*x+c-'0';
}

inline void Write(const int &x){
    if(x>9) Write(x/10);
    putchar(x%10+'0');
}

int main(){
    Read(n);
    for(int i=1,k=0;i<=n;i++){
        Read(k);
        for(int j=1,x=0;j<=k;j++) cin>>x, adj[x].push_back(i);
    }
    res=(int)1e9+7;
    for(int i=1;i<=n;i++) Bfs(i);
    Write(res);

    return 0;
}

• Subtask 1: 22 / 22
• Subtask 2: 45 / 45
• Subtask 3: 33 / 33