/in/foo.cc: In function 'int query(int, int, int)':
/in/foo.cc:58:9: warning: self-comparison always evaluates to true [-Wtautological-compare]
     if(l<=l&&r<=r) return mi[pos];
        ~^~~
/in/foo.cc:58:15: warning: self-comparison always evaluates to true [-Wtautological-compare]
     if(l<=l&&r<=r) return mi[pos];
              ~^~~