Wrong Answer
/in/foo.cc: In function 'int main()':
/in/foo.cc:25:8: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
if(!b1&&!b2)
^
/in/foo.cc: In function 'int main()':
/in/foo.cc:25:8: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
if(!b1&&!b2)
^
