Runtime Error
/in/foo.cc: In function 'int main()':
/in/foo.cc:26:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(b.count()==n) {
~~~~~~~~~^~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:26:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if(b.count()==n) {
~~~~~~~~~^~~
