oj.uz

답안 #123217

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
123217 2019-06-30T12:17:57 Z cvele Wand (COCI19_wand) C++14
70 / 70
 124 ms 4852 KB 
#include <iostream>
#include <sstream>
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <cctype>
#include <cstring>
#include <climits>
#include <iomanip>
#include <bitset>
#include <algorithm>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <list>
#include <map>

using namespace std;

const int N = 100005;

int n, m;
bool used[N];
bool ok[N];
vector <int> adj[N];

void dfs(int u, int cnt) {
  if (cnt > 0) ok[u] = 1;
  used[u] = 1;
  for (int v : adj[u]) {
    if (!used[v] || v == 1) {
      dfs(v, min(2, cnt + 1));
    }
  }
}

int main() {
  cin >> n >> m;
  for (int i = 0; i < m; i++) {
    int x, y;
    cin >> x >> y;
    adj[y].push_back(x);
  }
  dfs(1, 0);
  if (adj[1].empty()) ok[1] = 1;
  for (int i = 1; i <= n; i++) {
    cout << ok[i];
  }
  cout << endl;
  return 0;
}

Subtask #1
70.0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 2684 KB Output is correct
2 Correct 4 ms 2680 KB Output is correct
3 Correct 112 ms 4728 KB Output is correct
4 Correct 111 ms 4728 KB Output is correct
5 Correct 113 ms 4700 KB Output is correct
6 Correct 121 ms 4716 KB Output is correct
7 Correct 114 ms 4680 KB Output is correct
8 Correct 115 ms 4852 KB Output is correct
9 Correct 121 ms 4728 KB Output is correct
10 Correct 124 ms 4820 KB Output is correct