// Source: https://usaco.guide/general/io #include <iostream> // cin, cout #include <vector> // vector #include <string> // string #define vec vector #define mod 1000000007 #define For(i,n) for(int i = 0; i < n; i++) using namespace std; int construct(vec<vec<int>>p){ int n = p.size(); vec<vec<int>> odp(n, vec<int>(n)); For(i, (n-1)){ //spoj i a i+1 odp[i][i+1] = 1; } build(odp); return 1; } /* int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); return 0; }*/

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:19:5: error: 'build' was not declared in this scope
   19 |     build(odp);
      |     ^~~~~