JULKA

#include<iostream>
#include<stdio.h>
#include<string>
#include<string.h>
using namespace std;
#define maxi 200
string a,b,n;
char c[200],k[200],x[200];
int j=0;
void subtraction()
{
    string x=string(k);
    while(x.size()<a.size())
        x='0'+x;
    int carry=0,j=0;
    if((a[a.size()-1]+b[b.size()-1])%2!=0)
        a[a.size()-1]=a[a.size()-1]-1;
    for(int i=x.size()-1;i>=0;i--)
    {
        if((a[i]-'0')-(x[i]-'0')+carry<0)
            {
                k[j++]=10+(a[i]-'0')-(x[i]-'0')+'0';
                a[i-1]=a[i-1]-1;
            }
        else
        {
            k[j++]=(a[i]-'0')-(x[i]-'0')+'0';
        }

    }
    int i=strlen(k)-1;
    while(k[i]=='0')
            i=i-1;
    if(i==-1)
    {
        cout<<0<<endl;
        return;
    }
    while(i>=0)
        {
            cout<<k[i];
            i=i-1;
        }
    cout<<endl;
}
void division()
{
    j=0;
    int carry=0;
    for(int i=strlen(c)-1;i>=0;i--)
    {
        int z=c[i]+carry-'0';
        if(z==1)
            z=(z*10)+c[--i]-'0';
        k[j++]=z/2+'0';
        carry=(z%2)*10;
    }
    for(int i=0;i<j;i++)
        cout<<k[i];
    cout<<"\n";
    subtraction();
}
void addition()
{
    j=0;
    while(b.size()<a.size())
        b='0'+b;
    int carry=0;
    for(int i=a.size()-1;i>=0;i--)
    {
        carry=a[i]+b[i]+carry-'0'-'0';
        c[j++]=carry%10+'0';
        carry=carry/10;
    }
    while(carry>0)
    {
        c[j++]=carry%10+'0';
        carry/=10;
    }
    //for(int i=j-1;i>=0;i--)
        //cout<<c[i];
    //cout<<endl;
    division();
}
int main()
{
    int i=0;
    for(i=0;i<10;i++)
    {
        memset(c,0,200);
        memset(k,0,200);
        memset(x,0,200);
        cin>>a>>b;
        addition();
    }
}