Wrong Answer
/in/foo.cc: In function 'int main()':
/in/foo.cc:144:6: warning: unused variable 'cnt' [-Wunused-variable]
int cnt=0;
^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:144:6: warning: unused variable 'cnt' [-Wunused-variable]
int cnt=0;
^~~
