# | TimeUTC-0 | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1127141 | guessme | Birthday gift (IZhO18_treearray) | C++20 | 4091 ms | 53772 KiB |
#include <bits/stdc++.h>
#define TIME (1.0 * clock() / CLOCKS_PER_SEC)
#define For(i,a,b) for(int i = a; i <= b; i++)
#define Ford(i,a,b) for(int i = a; i >= b; i--)
#define ll long long
#define ii pair<int,int>
#define fi first
#define se second
#define all(v) v.begin(),v.end()
#define RRH(v) v.resize(unique(all(v)) - v.begin())
using namespace std;
const int N = 1e6+7;
const int M = 1e9+7;
const ll oo = 3e18;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
long long GetRandom(long long l, long long r) {
return uniform_int_distribution<long long> (l, r)(rng);
}
int n, m, q, a[N];
vector <int> g[N];
int h[N], par[20][N];
int timedfs = 0, tin[N], tout[N];
bool isAnc(int u, int v) {
return ((tin[u] >= tin[v]) && (tin[u] <= tout[v]));
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