Submission #763785

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
763785	2023-06-22 21:06:09	izanbf	Regions (IOI09_regions)	C++14	100 / 100	5836 ms	110480 KiB

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#include <bits/stdc++.h>
using namespace std;
using vi = vector<int>;
using vvi = vector<vi>;
const int BIG = 300;
vi r, tin, tout, big_id;
vvi adj, tins, touts, by_r;
int dp[250'000/BIG+1][250'000];
int timer;
void euler(int u, int p) {
    tin[u] = timer++;
    tins[r[u]].push_back(tin[u]);
    for (int v : adj[u]) {
        if (v != p) euler(v, u);
    }
    tout[u] = timer++;
    touts[r[u]].push_back(tout[u]);
}
int count_in_range(const vi& v, int l, int r) {
    if (v.empty()) return 0;
    int ri = upper_bound(v.begin(), v.end(), r) - v.begin();
    int li = upper_bound(v.begin(), v.end(), l) - v.begin();
    return ri - li;
}
void precompute(int rg, int p, int u) {
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 85 / 85