/in/foo.cc: In function 'int main()':
/in/foo.cc:7:3: warning: left operand of comma operator has no effect [-Wunused-value]
  1<=A,B<=50000;
  ~^~~
/in/foo.cc:7:8: warning: right operand of comma operator has no effect [-Wunused-value]
  1<=A,B<=50000;
       ~^~~~~~~
/in/foo.cc:11:1: error: expected ';' before '}' token
 }
 ^