#define                                                             br putchar

#define                                                             obr 73

#define                                                             rdb int

#define                                                             erb main

#define                                                             bro ++

#define                                                             ber --

erb() {rdb bdr     =obr;br       (bdr bro);  rdb bed=obr   /2;bdr-=bed;rdb orb,

ord;      ord    =br     (bro     bdr        )-bed;        br(orb=obr+bed);

bdr      =bed   /ord     bro     ;orb        =br(          br(     bed-ord)

+(       orb/   orb+     ord/    ord)        *(ber ord*     ber     bdr));

bed=     br(     br(      br(     orb        +bdr          +(ber   ord)+ber 

ord-(orb/orb     ))+      ord    + bro       ord)          -bdr    -ord);bdr=br

(br((bro bed+    bro orb)/ord     bro)/      ord);br(bro   bdr/ord-bed/bed);}