/in/foo.cc: In function 'int count(int&, int&)':
/in/foo.cc:8:5: error: 'a' was not declared in this scope
  if(a[i][j]=='1')
     ^
/in/foo.cc:9:12: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]
     return NULL;
            ^~~~
/in/foo.cc:10:5: error: 'a' was not declared in this scope
  if(a[i][j+1]!='1')
     ^
/in/foo.cc:13:12: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
   count(i,j+1);
           ~^~
/in/foo.cc:5:5: note:   initializing argument 2 of 'int count(int&, int&)'
 int count(int &i,int &j)
     ^~~~~
/in/foo.cc:15:5: error: 'a' was not declared in this scope
  if(a[i+1][j]!='1')
     ^
/in/foo.cc:18:10: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
   count(i+1,j);
         ~^~
/in/foo.cc:5:5: note:   initializing argument 1 of 'int count(int&, int&)'
 int count(int &i,int &j)
     ^~~~~
/in/foo.cc: In function 'int diamond(int&, int&)':
/in/foo.cc:26:5: error: 'a' was not declared in this scope
  if(a[i][j]=='1')
     ^
/in/foo.cc:27:12: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]
     return NULL;
            ^~~~
/in/foo.cc:28:5: error: 'a' was not declared in this scope
  if(a[i][j]=='#')
     ^
/in/foo.cc:30:5: error: 'a' was not declared in this scope
  if(a[i-1][j]!='1')
     ^
/in/foo.cc:32:10: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
   count(i-1,j);
         ~^~
/in/foo.cc:5:5: note:   initializing argument 1 of 'int count(int&, int&)'
 int count(int &i,int &j)
     ^~~~~
/in/foo.cc:34:5: error: 'a' was not declared in this scope
  if(a[i][j-1]!='1')
     ^
/in/foo.cc:36:12: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
   count(i,j-1);
           ~^~
/in/foo.cc:5:5: note:   initializing argument 2 of 'int count(int&, int&)'
 int count(int &i,int &j)
     ^~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:45:8: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' and 'const char [2]')
  cin>>m>>" ">>n;
  ~~~~~~^~~~~
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:168:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(bool& __n)
       ^~~~~~~~
/usr/include/c++/7/istream:168:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: cannot bind non-const lvalue reference of type 'bool&' to an rvalue of type 'bool'
  cin>>m>>" ">>n;
          ^~~
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:172:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>] <near match>
       operator>>(short& __n);
       ^~~~~~~~
/usr/include/c++/7/istream:172:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: invalid conversion from 'const char*' to 'short int' [-fpermissive]
  cin>>m>>" ">>n;
          ^~~
/in/foo.cc:45:10: error: cannot bind rvalue '(short int)((const char*)" ")' to 'short int&'
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:175:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(unsigned short& __n)
       ^~~~~~~~
/usr/include/c++/7/istream:175:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: invalid conversion from 'const char*' to 'short unsigned int' [-fpermissive]
  cin>>m>>" ">>n;
          ^~~
/in/foo.cc:45:10: error: cannot bind rvalue '(short unsigned int)((const char*)" ")' to 'short unsigned int&'
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:179:7: note: candidate: std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>] <near match>
       operator>>(int& __n);
       ^~~~~~~~
/usr/include/c++/7/istream:179:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: invalid conversion from 'const char*' to 'int' [-fpermissive]
  cin>>m>>" ">>n;
          ^~~
/in/foo.cc:45:10: error: cannot bind rvalue '(int)((const char*)" ")' to 'int&'
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:182:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(unsigned int& __n)
       ^~~~~~~~
/usr/include/c++/7/istream:182:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: invalid conversion from 'const char*' to 'unsigned int' [-fpermissive]
  cin>>m>>" ">>n;
          ^~~
/in/foo.cc:45:10: error: cannot bind rvalue '(unsigned int)((const char*)" ")' to 'unsigned int&'
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:186:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(long& __n)
       ^~~~~~~~
/usr/include/c++/7/istream:186:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: invalid conversion from 'const char*' to 'long int' [-fpermissive]
  cin>>m>>" ">>n;
          ^~~
/in/foo.cc:45:10: error: cannot bind rvalue '(long int)((const char*)" ")' to 'long int&'
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:190:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(unsigned long& __n)
       ^~~~~~~~
/usr/include/c++/7/istream:190:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: invalid conversion from 'const char*' to 'long unsigned int' [-fpermissive]
  cin>>m>>" ">>n;
          ^~~
/in/foo.cc:45:10: error: cannot bind rvalue '(long unsigned int)((const char*)" ")' to 'long unsigned int&'
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istream:195:7: note: candidate: std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; std::basic_istream<_CharT, _Traits>::__istream_type = std::basic_istream<char>] <near match>
       operator>>(long long& __n)
       ^~~~~~~~
/usr/include/c++/7/istream:195:7: note:   conversion of argument 1 would be ill-formed:
/in/foo.cc:45:10: error: invalid conversion from 'const char*' to 'long long int' [-fpermissive]
  cin>>m>>" ">>n;
          ^~~
/in/foo.cc:45:10: error: cannot bind rvalue '(long long int)((const char*)" ")' to 'long long int&'
In file included from /usr/include/c++/7/iostream:40:0,
                 from /in/foo.cc:2:
/usr/include/c++/7/istre