View Compilation Error

0_0_30408047_4912.cpp:49:10: error: cannot declare '::main' to be a template
 int main(){
          ^
0_0_30408047_4912.cpp: In function 'int main()':
0_0_30408047_4912.cpp:51:6: error: declaration of 'int t'
  int t,op,t1,t2,k,r,tmp;
      ^
0_0_30408047_4912.cpp:47:11: error:  shadows template parm 'class t'
 template <typename t>
           ^