View Compilation Error

0_0_36728601_30082.cpp: In function 'void add(int, int, int)':
0_0_36728601_30082.cpp:86:6: error: redefinition of 'void add(int, int, int)'
 void add(int u, int v, int w) {
      ^
0_0_36728601_30082.cpp:17:6: note: 'void add(int, int, int)' previously defined here
 void add(int x,int y,int z) {
      ^
0_0_36728601_30082.cpp: In function 'int main()':
0_0_36728601_30082.cpp:106:5: error: 'cin' was not declared in this scope
     cin>>T;
     ^
0_0_36728601_30082.cpp:123:9: error: 'cout' was not declared in this scope
         cout<<dinic()<<endl;;
         ^
0_0_36728601_30082.cpp:123:24: error: 'endl' was not declared in this scope
         cout<<dinic()<<endl;;
                        ^