/in/foo.cc:14:2: error: stray '#' in program
 }#include<bits/stdc++.h>
  ^
/in/foo.cc:14:3: error: 'include' does not name a type
 }#include<bits/stdc++.h>
   ^~~~~~~
/in/foo.cc:16:11: error: redefinition of 'const int maxn'
 const int maxn=20;
           ^~~~
/in/foo.cc:3:11: note: 'const int maxn' previously defined here
 const int maxn=20;
           ^~~~
/in/foo.cc:17:19: error: redefinition of 'long long int cat [20]'
 long long cat[maxn];
                   ^
/in/foo.cc:4:11: note: 'long long int cat [20]' previously declared here
 long long cat[maxn];
           ^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:18:5: error: redefinition of 'int main()'
 int main(){
     ^~~~
/in/foo.cc:5:5: note: 'int main()' previously defined here
 int main(){
     ^~~~