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;
int construct(vector<vector<int>> p){
int N = p.size();
vector<vector<int>> b(N, vector<int>(N, 0));
for(int i = 0; i < N; i++){
if(p[i][i + 1] == 1){
b[i][i + 1] = 1;
b[i + 1][i] = 1;
}
else{
for(int j = 0; j < N; j++){
if(p[i + 1][j] == 1 and p[i][j] == 1) return 0;
}
}
}
build(b);
return 1;
}
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