Submission #921320

#	Time	Username	Problem	Language	Result	Execution time	Memory
921320		JoksimKaktus	Wand (COCI19_wand)	C++17	70 / 70	23 ms	5468 KiB

wand

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
void output(bool yes){yes ? cout << "Yes" << "\n" : cout << "No" << "\n";}

vector <int> adj[100005];
vector <int> res(100005);
vector <int> vis(100005);

void find(int i){
    vis[i]=true;
    for(int j : adj[i]){
        res[j]=1;
        if(vis[j])continue;
        find(j);
    }
    vis[i]=false;
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(0);
    int n,m;
    cin >> n >> m;
    for(int i = 0;i < m;i++){
        int u,v;
        cin >> u >> v;
        u--;
        v--;
        adj[v].push_back(u);
    }
    find(0);
    if(adj[0].size() == 0)res[0]=1;
    for(int i = 0;i < n;i++){
        cout << res[i];
    }
}

• Subtask 1: 70 / 70