#define usu "bits/stdc++.h"
#define Usu using
#define uSu namespace
#define usU "adunare.in"
#define usU2 "adunare.out"
#define usu2 std
#define usu3 int
#define usu4 main
#define usu5 freopen
#define usu6 stdin
#define usu7 stdout
#define usu8 scanf
#define usu9 printf
#define usu21321 "r"
#define usu21322 "w"
#define usu10 +
#define usur "%d %d"
#define usur2 "%d\n"
#define usurelu return
#define florian 0
#include usu
Usu uSu usu2;
usu3 usu4(){
    usu5(usU,usu21321,usu6);
    usu5(usU2,usu21322,usu7);
    usu3 usuusu,usuusuusu;
    usu8(usur,&usuusu,&usuusuusu);
    usu9(usur2,usuusu usu10 usuusuusu);
    usurelu florian;
}