C++ :

#include<bits/stdc++.h>
#define int long long
using namespace std;
int a,b,c,sum,x[10000005],t;
signed main()
{
    cin>>a>>b>>c;
    for(int i1=0;i1<=4;i1++)
    for(int i2=0;i2<=4;i2++)
    for(int i3=0;i3<=4;i3++)
    for(int i4=0;i4<=i1;i4++)
    for(int i5=0;i5<=i2;i5++)
    for(int i6=0;i6<=i3;i6++)
    {
        t=(i1-i4)*a+(i2-i5)*b+(i3-i6)*c-i4*a-i5*b-i6*c;
        if(t>0)
        {
            if(x[t]==0)sum++;
            x[t]=1;
        }
    }
    cout<<sum;
    return 0;
}