Submission #200807

#	Time	Username	Problem	Language	Result	Execution time	Memory
200807		ekrem	Bitaro’s Party (JOI18_bitaro)	C++98	0 / 100	7 ms	2680 KiB

bitaro

#include<iostream>
#include<vector>
#include<queue>
using namespace::std;
 
vector<int> v[100005];
int ar[100005];
 
int main(){
    int n,m,q;
    cin>>n>>m>>q;
    for(int i=0,l,r;i<m;i++)
        cin>>l>>r,v[r].push_back(l);
    while(q--){
        int x,k,maxn=0;
        cin>>x>>k;
        for(int i=0,t;i<k;i++)
            cin>>t,ar[t]=1;
        queue<pair<int,int>> q;
        q.push({x,0});
        while(!q.empty()){
            int i=q.front().first,w=q.front().second;
            q.pop();
            if(!ar[i])
                maxn=max(maxn,w);
            for(auto a:v[i])
                q.push({a,w+1});
        } 
        cout<<maxn<<'\n';
        for(int i=1;i<=n;i++)
            ar[i]=0;
    }
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 7
• Subtask 3: 0 / 86