/in/foo.cc: In function 'int main()':
/in/foo.cc:26:46: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   26 |                 if(x<=0||x!=1&&x%2!=0&&x%3!=0&&x%5!=0)
      |                          ~~~~~~~~~~~~~~~~~~~~^~~~~~~~
/in/foo.cc: In function 'int bfs(int)':
/in/foo.cc:18:1: warning: control reaches end of non-void function [-Wreturn-type]
   18 | }
      | ^