View Compilation Error

0_0_32042055_20301.cpp: In function 'void add_edge(int, int, int, int)':
0_0_32042055_20301.cpp:31:13: error: invalid conversion from 'int*' to 'int' [-fpermissive]
  G[cnt].next=head
             ^
0_0_32042055_20301.cpp:31:14: error: expected ';' at end of input
  G[cnt].next=head
              ^
0_0_32042055_20301.cpp:31:14: error: expected '}' at end of input