Submission #311694

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
311694	2020-10-11 04:37:06	thecodingwizard	Putovanje (COCI20_putovanje)	C++11	110 / 110	221 ms	23288 KiB

putovanje

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define ii pair<int, int>
#define f first
#define s second
#define mp make_pair
#define pb push_back
int n; 
vector<pair<int, ii>> adj[200000];
int pa[200000][20];
int depth[200000];
int in[200000], out[200000], ctr = 0;
void dfs(int u, int p, int d) {
    in[u] = ctr++;
    pa[u][0] = p;
    depth[u] = d;
    for (auto v : adj[u]) {
        if (v.f != p) dfs(v.f, u, d+1);
    }
    out[u] = ctr-1;
}
int lca(int a, int b) {
    if (depth[a] < depth[b]) swap(a, b);
    for (int i = 19; i >= 0; i--) {
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 25 / 25
• Subtask 3: 65 / 65