#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][j]=1; } build(ans); } /*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; }*/

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:16:31: error: 'j' was not declared in this scope
   16 |         for(int c:E[i])ans[i][j]=1;
      |                               ^
supertrees.cpp:16:17: warning: unused variable 'c' [-Wunused-variable]
   16 |         for(int c:E[i])ans[i][j]=1;
      |                 ^
supertrees.cpp:19:1: warning: control reaches end of non-void function [-Wreturn-type]
   19 | }
      | ^