Accepted
/in/foo.cc: In function 'int main()':
/in/foo.cc:7:21: warning: unused variable 'k' [-Wunused-variable]
int n(0),i,j(1),k,l;register char c;ans[0]=0;
^
/in/foo.cc: In function 'int main()':
/in/foo.cc:7:21: warning: unused variable 'k' [-Wunused-variable]
int n(0),i,j(1),k,l;register char c;ans[0]=0;
^
