oj.uz

답안 #100354

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
100354 2019-03-10T13:55:39 Z MatesV13 Wand (COCI19_wand) C++11
70 / 70
 64 ms 4856 KB 
#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

# 결과 실행 시간 메모리 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