//#include "worldmap.h" #include <bits/stdc++.h> using namespace std; vector < vector <int> > create_map(int N, int M, vector<int> A, vector<int> B) { vector< vector <int> > answer( N, vector <int> ( N, 1 ) ); for ( int i = 0; i < N; i++ ) { for ( int j = 0; j < N; j++ ) { a[i][j] = i + 1; } } return answer; }

worldmap.cpp: In function 'std::vector<std::vector<int> > create_map(int, int, std::vector<int>, std::vector<int>)':
worldmap.cpp:14:25: error: 'a' was not declared in this scope
   14 |                         a[i][j] = i + 1;
      |                         ^