/in/foo.cc:1:1: error: stray '##' in program
 ##include<bits/stdc++.h>
 ^~
/in/foo.cc:1:3: error: 'include' does not name a type
 ##include<bits/stdc++.h>
   ^~~~~~~
/in/foo.cc:4:1: error: 'string' does not name a type
 string st;
 ^~~~~~
/in/foo.cc: In function 'void zhongjianshu()':
/in/foo.cc:20:26: error: 'memset' was not declared in this scope
  memset(ans,0,sizeof(ans));
                          ^
/in/foo.cc: In function 'bool pd()':
/in/foo.cc:39:28: error: 'memset' was not declared in this scope
  memset(ans1,0,sizeof(ans1));sp1=0;
                            ^
/in/foo.cc:94:9: error: 'st' was not declared in this scope
  if(spn<st.size()) return true;
         ^~
/in/foo.cc: In function 'int main()':
/in/foo.cc:106:2: error: 'cin' was not declared in this scope
  cin>>st;
  ^~~
/in/foo.cc:106:7: error: 'st' was not declared in this scope
  cin>>st;
       ^~
/in/foo.cc:107:69: error: 'cout' was not declared in this scope
  if(st.size()==1 && (st=="0"||st=="1"||st=="2"||st=="3"||st=="4")) {cout<<0;return 0;} 
                                                                     ^~~~
/in/foo.cc:137:21: error: 'cout' was not declared in this scope
  for(i=sr;i>=1;i--) cout<<r[i];
                     ^~~~