/in/foo.cc: In function 'long long int check(long long int, long long int)':
/in/foo.cc:8:9: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(a==1&&b==0||a==2&&b==1||a==0&&b==2)return 2;
     ~~~~^~~~~~
/in/foo.cc:8:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  if(a==1&&b==0||a==2&&b==1||a==0&&b==2)return 2;
                             ~~~~^~~~~~