View Compilation Error

0_0_24829433_26851.cpp: In function 'int main()':
0_0_24829433_26851.cpp:43:22: error: invalid conversion from 'int*' to 'int' [-fpermissive]
    num[i].next=head[b];
                      ^
0_0_24829433_26851.cpp:44:11: error: incompatible types in assignment of 'int' to 'int [30030]'
    head[b]=i;
           ^