Submission #1316730

#TimeUsernameProblemLanguageResultExecution timeMemory
1316730ezzzayWorld Map (IOI25_worldmap)C++20
15 / 100
1194 ms2038884 KiB
#include<bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
vector<int>adj[50];
vector<int>rt;
void dfs(int a, int p){
    rt.pb(a);
	for(auto b:adj[a]){
		if(b==p)continue;
		dfs(b,a);
		rt.pb(a);
	}
}
std::vector<std::vector<int>> create_map(int N, int M, std::vector<int> A, std::vector<int> B) {
	for(int i=1;i<=N;i++){
		adj[i].clear();
	}
	for(int i=0;i<M;i++){
		adj[A[i]].pb(B[i]);
		adj[B[i]].pb(A[i]);
	}
	rt.clear();
	dfs(1,0);
	int h=rt.size()*3;
	
	vector< vector< int> > v(h, vector<int> (h));
	
	for(int i=0;i<rt.size();i++){
	    for(int j=0;j<h;j++){
	        v[i*3][j]=rt[i];
	        v[i*3+1][j]=rt[i];
	        v[i*3+2][j]=rt[i];
	    }
	    for(int j=0;j<adj[rt[i]].size();j++){
	        v[i*3+1][j*2]=adj[rt[i]][j];
	    }
	}
	return v;
	
}
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