hdu6277

#include<iostream>

#include<cstdio>

#include<queue>

#include<algorithm>

#include<cmath>

#include<ctime>

#include<set>

#include<map>

#include<stack>

#include<cstring>

#define inf 2147483647

#define ls rt<<1

#define rs rt<<1|1

#define lson ls,nl,mid,l,r

#define rson rs,mid+1,nr,l,r

#define N 100010

#define For(i,a,b) for(long long i=a;i<=b;i++)

#define p(a) putchar(a)

#define g() getchar()

using namespace std;

long long n,a;

void in(long long &x){

    long long y=;

    char c=g();x=;

    while(c<''||c>''){

        if(c=='-')y=-;

        c=g();

    }

    while(c<=''&&c>=''){

        x=(x<<)+(x<<)+c-'';c=g();

    }

    x*=y;

}

void o(long long x){

    if(x<){

        p('-');

        x=-x;

    }

    if(x>)o(x/);

    p(x%+'');

int main(){

    while(scanf("%lld%lld",&n,&a)!=EOF){

        o((n+a-)%==?(n+a-)/:(n+a-)/+);p('\n');

    }

    return ;

}