#include "supertrees.h"
#include <vector>
using namespace std;
int construct(vector<vector<int>> p) {
int n = p.size();
vector<vector<int>> ans(n, vector<int>(n, 0));
for(int i = 0; i < n; i ++) for(int j = 0; j < n; j ++)
if(p[i][j] == 3) return 0;
vector<int> rt(n, 0);
for(int i = 0; i < n; i ++){
int la = 0;
for(; p[i][la] != 1; la ++);
if(la != i){
if(p[la] != p[i]) return 0;
ans[la][i] = 1; ans[i][la] = 1;
}else rt[i] = 1;
}
for(int i = 0; i < n; i ++) if(rt[i]){
int cc = 0;
for(; p[i][cc] == 0; cc ++);
for(int j = 0; j < n; j ++)
if((p[cc][j] == 0) ^ (p[i][j] == 0))
return 0;
if(cc == i){
int la = i;
for(int j = i + 1; j < n; j ++)
if(rt[j] && p[i][j]){
ans[la][j] = 1; ans[j][la] = 1;
la = j;
}
if(la == i);
else if(ans[la][i]) return 0;
else{
ans[la][i] = 1; ans[i][la] = 1;
}
}
}
build(ans);
return 1;
}
