/in/foo.cc: In function 'int main()':
/in/foo.cc:22:12: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
     if(j!=k&&getx(j)==getx(k)||getx(j)==0)
        ~~~~^~~~~~~~~~~~~~~~~~
/in/foo.cc: In function 'int getx(int)':
/in/foo.cc:14:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^