Submission #738959

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
738959	2023-05-09 17:35:39	lorenzoferrari	Regions (IOI09_regions)	C++17	100 / 100	2326 ms	45136 KiB

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#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#include "bits/stdc++.h"
using namespace std;
using LL = long long;
static constexpr int N = 200000;
static constexpr int R = 25000;
static constexpr int SQ = 700;
static int h[N], p[N], f[R], in[N], out[N];
static vector<int> fi(R, -1), ff;
static vector<int> adj[N];
static vector<array<int, 2>> ev[R];
static vector<array<int, 2>> vs[R];
vector<vector<LL>> sub, anc;
int t = 0;
static void dfs0(int v) {
    in[v] = t++;
    for (int u : adj[v]) {
        dfs0(u);
    }
    out[v] = t;
}
static int dfs1(int v, const int i, int acc = 0) {
    int cnt = 0;
    for (int u : adj[v]) {
        cnt += dfs1(u, i, acc + (h[v] == ff[i]));
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 85 / 85