View Compilation Error

0_0_39580045_26418.cpp: In member function 'void Edge::input()':
0_0_39580045_26418.cpp:13:33: error: 'cin' was not declared in this scope
   13 |                                 cin>>a>>b>>cost;
      |                                 ^~~
0_0_39580045_26418.cpp:5:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'?
    4 | #include <cmath>
  +++ |+#include <iostream>
    5 | using namespace std;