This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "supertrees.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
int construct(vector<vector<int>> a){
int n=(int)a[0].size();
for(int i=0;i<n;i++)for(int j=0;j<n;j++)if(a[i][j]==3)return 0;
vector<int> E[n];
for(int i=0;i<n;i++){
for(int j=0;j<n;j++){
if(a[i][j]==1)E[i].pb(j),E[j].pb(i);
}
}
vector<vector<int>> ans(n,vector<int>(n,0));
for(int i=0;i<n;i++){
for(int c:E[i])ans[i][c]=1;
}
build(ans);
return 1;
}
/*int main(){
int n;
scanf("%i",&n);
vector<vector<int>> a(n,vector<int>(n));
for(int i=0;i<n;i++)for(int j=0;j<n;j++)scanf("%i",&a[i][j]);
int ans=construct(a);
return 0;
}*/
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