#include<bits/stdc++.h>
#include "supertrees.h"
#define maxn 1010
#define f first
#define s second
using namespace std;
bool is[maxn];
vector<pair<int,int>> comp[maxn];
int par[maxn];
int findd(int u)
{
if(par[u]==-1) return u;
return par[u]=findd(par[u]);
}
void unite(int u,int v)
{
u=findd(u);
v=findd(v);
if(v==u) return;
if(comp[u].size()<comp[v].size()) swap(u,v);
for(auto e:comp[v]) comp[u].push_back(e);
par[v]=u;
comp[v].clear();
}
vector<vector<int>> d;
int construct(vector<vector<int>> p)
{
int n=p.size();
for(int i=0;i<n;i++)
{
par[i]=-1;
int cntr=0;
vector<int> dumbbb(n,0);
d.push_back(dumbbb);
for(auto e:p[i])
{
if(e==1) cntr++;
}
if(cntr==1) is[i]=1;
comp[i].push_back({is[i],i});
}
for(int i=0;i<n;i++)
{
for(int j=i+1;j<n;j++)
{
if(p[i][j]) unite(i,j);
}
}
for(int i=0;i<n;i++)
{
if(comp[i].size()==0) continue;
sort(comp[i].rbegin(),comp[i].rend());
int prev=-1;
int last=-1;
int fir=-1;
for(auto e:comp[i])
{
if(e.f==1) last=e.s;
if(prev==-1)
{
prev=e.s;
continue;
}
d[prev][e.s]=1;
d[e.s][prev]=1;
}
if(last==-1)
{
d[comp[i][comp[i].size()-1].s] [comp[i][0].s]=1;
d[comp[i][0].s] [comp[i][comp[i].size()-1].s]=1;
}
else
{
d[comp[i][comp[i].size()-1].s] [last]=1;
d[last] [comp[i][comp[i].size()-1].s]=1;
}
}
build(dumbbb);
return 1;
}
Compilation message
supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:55:13: warning: unused variable 'fir' [-Wunused-variable]
55 | int fir=-1;
| ^~~
supertrees.cpp:81:11: error: 'dumbbb' was not declared in this scope
81 | build(dumbbb);
| ^~~~~~
