#include<bits/stdc++.h>
#define baza 1000000000000000
using namespace std;
long long v[1000005],d,v1[1000005],rest;
char s[1000005],buff[50];
long long restscalar(long long a[],long long  n)
{
    long long  t=0;
    for (long long i=a[0];i>=1;i--)
    {
        t=(t*baza+a[i])%n;
    }
    return t;
}
void adunare(long long a[],long long b[])
{
    long long t=0,i;
    for(i=1;i<=a[0] ||i<=b[0] ||t;i++)
    {
        t=t+a[i]+b[i];
        a[i]=t%baza;
        t/=baza;
    }
    a[0]=i-1;
}
void conversie(long long v[],long long x)
{
    long long da=0;
    while(x)
    {
        v[++da]=x%baza;
        x/=baza;
    }
    v[0]=da;
}
void scrie(long long x)
{
        if(x<10)
    {
        printf("00000000000000%lld",x);
        return;
    }

       if(x<100)
    {
        printf("0000000000000%lld",x);
        return;
    }

        if(x<1000)
    {
        printf("000000000000%lld",x);
        return;
    }
         if(x<10000)
    {
        printf("00000000000%lld",x);
        return;
    }
    if(x<100000)
    {
        printf("0000000000%lld",x);
        return;
    }
     if(x<1000000)
    {
        printf("000000000%lld",x);
        return;
    }
     if(x<10000000)
    {
        printf("00000000%lld",x);
        return;
    }
    if(x<100000000)
    {
        printf("0000000%lld",x);
        return;
    }
    if(x<1000000000)
    {
        printf("000000%lld",x);
        return;
    }
    if(x<10000000000)
    {
        printf("00000%lld",x);
        return;
    }
    if(x<100000000000)
    {
        printf("0000%lld",x);
        return;
    }
    if(x<1000000000000)
    {
        printf("000%lld",x);
        return;
    }
    if(x<10000000000000)
    {
        printf("00%lld",x);
        return;
    }

    if(x<100000000000000)
    {
        printf("0%lld",x);
        return;
    }
    printf("%lld",x);
}
void afisare(long long v[])
{
    long long x=v[0];
    //scrie(v[x]);
    printf("%lld",v[x]);
    for(long long i=x-1;i>=1;i--)
        scrie(v[i]);
    printf("\n");
}
int main()
{
    freopen("next.in","r",stdin);
    freopen("next.out","w",stdout);
    scanf("%s",&s);
    long long x=strlen(s);
    long long z=x%15;
    fclose(stdin);
    freopen("next.in","r",stdin);
    long long dv=0;
   if(z)
   {
       memset(buff,0,20);
        fread(buff,1,z,stdin);
        long long y=0;
        for(int i=0;i<z;i++)
        {
            y=y*10+(buff[i]-'0');
        }
        v[++dv]=y;
        x-=z;
   }
    while(x>0)
    {
        {
        memset(buff,0,20);
        fread(buff,1,15,stdin);
       // long long y=atol(buff);
       // v[++dv]=atol(buff);
        long long y=0;
        for(int i=0;i<15;i++)
        {
            y=y*10+(buff[i]-'0');
        }
         v[++dv]=y;
        x-=15;
        }
    }
    reverse(v+1,v+dv+1);
    v[0]=dv;
    scanf("\n");
    scanf("%lld",&d);
    rest=restscalar(v,d);
    if(!rest) rest=d;
    rest=d-rest;
    conversie(v1,rest);
    adunare(v,v1);


     x=v[0];
    //scrie(v[x]);
    printf("%lld",v[x]);
    for(long long i=x-1;i>=1;i--)
        scrie(v[i]);
    printf("\n");
    return 0;
}