Submission #933382

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
933382	2024-02-25 15:23:18	NourWael	Regions (IOI09_regions)	C++17	95 / 100	8038 ms	37392 KiB

regions

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#include <bits/stdc++.h>
#define int long long
using namespace std; 
int const mxN = 2e5+5;
int  const mxR = 25005;
vector<int> adj [mxN];
int in[mxN], out[mxN], t, r , n, region[mxN], q, fin[505][505], cnt[505];
vector<pair<int,int>> reg [mxR];
void dfs ( int i, int p ) {
     in[i] = t;
     t++;
     for(auto it:adj[i]){
      if(it==p) continue;
      dfs(it,i);
     }
     t++;
     out[i] = t;
     reg[region[i]].push_back({in[i],out[i]});
}
void dfs2 ( int i, int p ) {
  for(int j=1; j<=r; j++) {
      if(region[i]==j) continue;
      fin[j][region[i]] += cnt[j];
     }
     cnt[region[i]]++;
     for(auto it:adj[i]){
      if(it==p) continue;
      dfs2(it,i);
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 80 / 85