RUTTIEN1 C++

#include<bits/stdc++.h>
using namespace;
int a,b,c,d,m,s,x1,x2,x3,x4;
int main()
{
    freopen("RUTTIEN1.inp","r",stdin);
    freopen("RUTTIEN1.out","w",stdout);    
    scanf("%d %d %d %d %d",&m,&a,&b,&c,&d);
    int S=0;
    for(x1=0;i<=m/a;x1++)
        for(x2=0;j<=(m-x1*a)/b;x2++)
            for(int x3=0;x3<=(m-x1*a-x2*b)/x3;x3++)
             if((m-x1*a-x2*b-x3*c)%d==0)
            {
                x4=((m-x1*a-x2*b-x3*c)%d;
                s++;
            }
    printf("%d",S);
}