View Compilation Error

0_0_23699686_14122.cpp: In function 'double solve(int, int)':
0_0_23699686_14122.cpp:53:9: error: redeclaration of 'double ans'
  double ans = min(d1, d2);
         ^
0_0_23699686_14122.cpp:33:9: note: 'double ans' previously declared here
  double ans = 0;
         ^
0_0_23699686_14122.cpp:56:33: error: 'd' was not declared in this scope
   if(node[mid].x - node[i].x <= d)
                                 ^
0_0_23699686_14122.cpp:60:33: error: 'd' was not declared in this scope
   if(node[i].x - node[mid].x <= d)
                                 ^