Submission #378287

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
378287	2021-03-16 11:51:17	Sara	Railway (BOI17_railway)	C++14	100 / 100	278 ms	66152 KiB

railway

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define pb push_back
#define F first
#define S second
 
const int N = 300000 + 5;
const int LOG = 30;
int n, m, k;
vector < pair <int, int> > g[N];
int par[LOG][N], h[N];
vector <int> ans;
set <int> st[N];
vector <int> out[N];
void dfs(int v, int pr){
    for (auto it : g[v]){
        int u = it.F;
        if (u == pr) continue;
        par[0][u] = v; 
        h[u] = h[v] + 1;
        dfs(u, v);
    }
 
 
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Compilation message (stderr)

railway.cpp: In function 'int main()':
railway.cpp:106:17: warning: unused variable 'v' [-Wunused-variable]
  106 |         int sz, v, lca = 0;
      |                 ^

• Subtask 1: 8 / 8
• Subtask 2: 15 / 15
• Subtask 3: 7 / 7
• Subtask 4: 29 / 29
• Subtask 5: 16 / 16
• Subtask 6: 25 / 25