View Compilation Error

0_0_33177295_18946.cpp: In function 'void dfs(int, int)':
0_0_33177295_18946.cpp:33:40: error: 'n' was not declared in this scope
  if(depth + dp[x] <= answer || depth + n - x + 1 <= answer) return;
                                        ^
0_0_33177295_18946.cpp:34:22: error: 'n' was not declared in this scope
  for(int i = x; i <= n; i++)
                      ^