View Compilation Error

0_0_29683411_26222.cpp:53:8: error: redefinition of 'struct num'
 struct num
        ^
0_0_29683411_26222.cpp:8:8: error: previous definition of 'struct num'
 struct num
        ^
0_0_29683411_26222.cpp:63:43: error: redefinition of 'std::priority_queue<num, std::vector<num>, std::less<num> > x'
 priority_queue<num,vector<num>,less<num> >x;
                                           ^
0_0_29683411_26222.cpp:18:43: note: 'std::priority_queue<num, std::vector<num>, std::less<num> > x' previously declared here
 priority_queue<num,vector<num>,less<num> >x;
                                           ^
0_0_29683411_26222.cpp: In function 'int main()':
0_0_29683411_26222.cpp:64:5: error: redefinition of 'int main()'
 int main()
     ^
0_0_29683411_26222.cpp:19:5: note: 'int main()' previously defined here
 int main()
     ^