Submission #731125

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
731125	2023-04-27 03:56:56	stevancv	Cat Exercise (JOI23_ho_t4)	C++14	100 / 100	379 ms	58076 KiB

Main

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#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 2e5 + 2;
const int inf = 2e9 + 2;
int p[N], inv[N];
int par[N][18], in[N], out[N], dep[N], tsz;
vector<int> g[N];
vector<array<int, 2>> ng[N];
void Dfs(int s, int e) {
    in[s] = ++tsz;
    par[s][0] = e;
    for (int i = 1; i < 18; i++) par[s][i] = par[par[s][i - 1]][i - 1];
    for (int u : g[s]) {
        if (u == e) continue;
        dep[u] = dep[s] + 1;
        Dfs(u, s);
    }
    out[s] = tsz;
}
bool Ancestor(int u, int v) {
    return in[u] <= in[v] && out[v] <= out[u];
}
int Lca(int u, int v) {
    if (Ancestor(u, v)) return u;
 
 
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• Subtask 1: 7 / 7
• Subtask 2: 7 / 7
• Subtask 3: 7 / 7
• Subtask 4: 10 / 10
• Subtask 5: 20 / 20
• Subtask 6: 23 / 23
• Subtask 7: 26 / 26