Submission #311545

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
311545	2020-10-10 15:27:20	two_sides	Railway (BOI17_railway)	C++17	100 / 100	95 ms	26604 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
#define eb emplace_back
struct edge {
  int v, i;
  edge(int v, int i): v(v), i(i) {}
};
const int N = 1e5 + 5;
const int LG = 17;
vector <edge> adj[N];
vector <int> path, ret;
int tin[N], tim, n, m, k;
int rmq[LG][N], lg[N], ss[N];
int st[N], tp, sp[N], d[N];
void dfs(int u, int p) {
  tin[u] = tim++;
  for (edge e : adj[u])
    if (e.v != p) {
      ret.eb(tin[u]); path.eb(u);
      d[e.v] = d[u] + 1; dfs(e.v, u);
    }
}
 
 
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• Subtask 6: 25 / 25