Submission #804296

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
804296	2023-08-03 07:52:09	Warinchai	Connecting Supertrees (IOI20_supertrees)	C++14	0 / 100	1 ms	304 KiB

supertrees

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#include "supertrees.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
int sz;
vector<vector<int> >v;
vector<vector<int> >ans;
int pr[1005];
int in[1005];
int fp(int a){
    if(pr[a]==a){
        return a;
    }
    return pr[a]=fp(pr[a]);
}
void un(int a,int b){
    if(fp(a)!=fp(b)){
        ans[a][b]=1;
        ans[b][a]=1;
        pr[fp(b)]=fp(a);
    }
}
bool build_1(){
    for(int i=0;i<sz;i++){
        for(int j=i+1;j<sz;j++){
            if(v[i][j]==1){
                un(i,j);
            }
        }
    }
 
 
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