Submission #100354

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
100354	2019-03-10T13:55:39 Z	MatesV13	Wand (COCI19_wand)	C++11	70 / 70	64 ms	4856 KB

wand

#include <bits/stdc++.h>
using namespace std;
int n, m, a, b;
vector<int> w[100005];
bool v[100005];
void dfs(int x){
	for (vector<int>::iterator it=w[x].begin();it!=w[x].end();it++){
		if (!v[*it]){v[*it] = true; dfs(*it);}
	}
	return;
}
int main (){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
bool am1=0;
	cin >> n >> m;
	for (int i=0;i<m;i++){
		cin >> a >> b;
		if (b==1) am1=1;
		w[b].push_back(a);
	}
	if(am1) dfs(1);
	else v[1]=1;
	for (int i=1;i<=n;i++) cout << v[i];
return 0;
}

Subtask #1

70.0 / 70.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	2688 KB	Output is correct
2	Correct	5 ms	2688 KB	Output is correct
3	Correct	44 ms	4600 KB	Output is correct
4	Correct	63 ms	4600 KB	Output is correct
5	Correct	56 ms	4600 KB	Output is correct
6	Correct	64 ms	4728 KB	Output is correct
7	Correct	34 ms	4600 KB	Output is correct
8	Correct	49 ms	4700 KB	Output is correct
9	Correct	38 ms	4856 KB	Output is correct
10	Correct	39 ms	4816 KB	Output is correct