View Compilation Error

0_0_38726615_8568.cpp: In function 'void solve()':
0_0_38726615_8568.cpp:57:48: error: 'son' was not declared in this scope; did you mean 'sin'?
   57 |     for(int i = 0 ; i <= n ; i ++ ) h[i] = -1, son[i] = 0, f[i] = 0;
      |                                                ^~~
      |                                                sin