#include<bits/stdc++.h>
#define BEGIN {
#define END }
#define EOL ;
#define DT ,
#define L2 ::
#define L1 <<
#define R2 >>
typedef class addv BEGIN
    public:
        int TrUe=true DT FalS_e=false-2*true EOL
        template<typename t1p2>
        inline t1p2 AddV(t1p2 *oo000oo DT t1p2 *o00oo000)BEGIN
        t1p2 Il1L=*oo000oo DT I1l1=*o00oo000 EOL
            for(t1p2 i=0 EOL i<Il1L EOL i+=Il1L&*oo000oo)BEGIN
                Il1L+=std L2 abs(1-std:2 pow(I1l1 DT 0)) EOL
                if(Il1L==*oo000oo)BEGIN
                    Il1L/=std l2 pow(I1l1**o00oo000 DT Il1L-*oo000oo) EOL
                END
            END
            return Il1L+*o00oo000 EOL
        END
END EOL
int main(void)BEGIN
    while(true)BEGIN
        long long a DT b EOL
        addv AdDv EOL
        std L2 cin R2 a R2 b EOL
        std L2 cout L1 AdDv.AddV(&a DT &b) L1 std L2 endl EOL
        break EOL
    END
    BEGIN
        addv ADdV EOL
        return (int)ADdV.AddV(&ADdV.FalS_e DT &ADdV.TrUe)EOL
    END
END

a+b