Submission #469254

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
469254	2021-08-31 09:16:48	islingr	One-Way Streets (CEOI17_oneway)	C++17	100 / 100	77 ms	15424 KiB

oneway

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#include <bits/stdc++.h>
using namespace std;
template<class T> bool uin(T& a, const T& b) { return a > b ? a = b, true : false; }
signed main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int n, m; cin >> n >> m;
  
  vector<vector<int>> g(n);
  vector<int> l(m), r(m), in(n), low(n), s(n);
  for (int e = 0; e < m; ++e) {
    cin >> l[e] >> r[e]; --l[e]; --r[e];
    g[l[e]].push_back(e);
    g[r[e]].push_back(e); 
  }
  int q; cin >> q;
  while (q--) {
    int u, v; cin >> u >> v; --u; --v;
    ++s[u]; --s[v];
  }
  string ans(m, 'B');
  int timer = 0;
  constexpr char dir[2] = {'L', 'R'};
  
  auto dfs = [&](const auto &self, int u, int p) -> void {
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 30 / 30
• Subtask 3: 40 / 40