제출 #968681

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
968681	2024-04-23 20:08:01	RandomUser	Putovanje (COCI20_putovanje)	C++17	110 / 110	185 ms	27356 KiB

putovanje

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
const int LOG = 20;
const int maxn = 2e5 + 5;
 
ll ans = 0;
vector<array<int, 3> > graph[maxn];
int up[maxn][LOG], depth[maxn], diff[maxn], dp[maxn];
 
void dfs1(int u, int p) {
    for(int i=1; i<LOG; i++) up[u][i] = up[up[u][i-1]][i-1];
 
    for(auto &[v, c1, c2] : graph[u]) {
        if(v == p) continue;
        depth[v] = depth[u] + 1;
        up[v][0] = u;
        dfs1(v, u);
    }
}
 
int jmp(int x, int d) {
    for(int j=LOG-1; j>=0; j--)
        if(d & (1 << j)) x = up[x][j];
    return x;
}
 
int get_lca(int a, int b) {
    if(depth[a] < depth[b]) swap(a, b);
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 25 / 25
• Subtask 3: 65 / 65