Submission #200815

#	Time	Username	Problem	Language	Result	Execution time	Memory
200815		ekrem	Bitaro’s Party (JOI18_bitaro)	C++98	0 / 100	8 ms	2808 KiB

bitaro

#include <iostream>
#include <set>
#include <cstring>
#include <vector>
#include <queue>
#include <stack>
using namespace std;
int n, m, q, x, y, k;
vector<int> edges[100010];
 
 
int main(){
    cin>>n>>m>>q;
    for (int i = 0; i < m; ++i){
        cin>>x>>y;
        edges[y].push_back(x);
    }
 
    for (int i = 0; i < q; ++i){
        cin>>x>>k;
        set<int> illegal;
        queue<int> sira;
        bool visited[100010];
        memset(visited, 0, sizeof(visited));
        for (int i = 0; i < k; ++i){
            cin>>y;
            illegal.insert(y);
        }
        int uzaklik[100010];
        sira.push(x);
        uzaklik[x]=0;
        int maxi=0;
        while(!sira.empty()){
            int node=sira.front();
            sira.pop();
            for (int i = 0; i < edges[node].size(); ++i){
                if(uzaklik[node]+1>uzaklik[edges[node][i]]){
                    sira.push(edges[node][i]);
                    uzaklik[edges[node][i]]=uzaklik[node]+1;
                    if(illegal.find(edges[node][i])==illegal.end())maxi=max(maxi, uzaklik[edges[node][i]]);
                }
            }
        }
        cout<<maxi<<endl;
 
 
    }
 
}

Compilation message (stderr)

bitaro.cpp: In function 'int main()':
bitaro.cpp:36:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int i = 0; i < edges[node].size(); ++i){
                             ~~^~~~~~~~~~~~~~~~~~~~

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