/in/foo.cc: In function 'int main()':
/in/foo.cc:15:19: warning: left operand of comma operator has no effect [-Wunused-value]
                max+x, cnt+1;
                ~~~^~
/in/foo.cc:15:26: warning: right operand of comma operator has no effect [-Wunused-value]
                max+x, cnt+1;
                       ~~~^~
/in/foo.cc:5:12: warning: 'n' is used uninitialized in this function [-Wuninitialized]
 {   int n(n<10000); cin>>n;
           ~^~~~~~