#include <stdio.h>
long long s[500002],n,i,k,a,b,nr,c;
int main()
{
    freopen("divk.in","r",stdin);
    freopen("divk.out","w",stdout);
    scanf("%lld%lld%lld%lld",&n,&k,&a,&b);
    for(i=1; i<=n; i++)
     {
         scanf("%lld",&nr);
         s[i]+=s[i-1]+nr;
         if(s[i]%k==0) c++;
     }
     printf("%lld",c+2);
     return 0;
}