C :

#include<stdio.h>
int main()
{
    int a,b,c,i,s=0;
    scanf("%d%d%d",&a,&b,&c);
    if(a%b==0)
    {
        for(i=1;i<=a/b-1;i++)
        {
               if(((a-b*i)%c==0)&&((a-b*i)>=c))
               {
                   if((a-b*i)/c>=10&&i>=10)
                       s++;
               }
        }
        printf("%d",s);
    }
    
    if(a%b!=0)
    {
        for(i=1;i<=a/b;i++)
        {
            if((a-b*i)/c>=10&&i>=10)
                s++;
        }
        printf("%d",s);
    }
   
    return 0;
}

C++ :

#include <bits/stdc++.h>
using namespace std;

int main(){
	int i,n,x,y,t,c = 0;
	cin>>n>>x>>y;
	for(i = 10;i <= (n - y) / x;i++){
		t = n - i * x;
		if(t % y == 0 && t / y >= 10){
			c++;
//			cout<<i<<" "<<t / y<<endl;
		}
	}
	
	cout<<c;
}

Java :

import java.util.Scanner;
public class Main {

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);
		int n = input.nextInt();
		int x = input.nextInt();
		int y = input.nextInt();
		int count = 0;
		for(int i = 10;i <= n - 10 * y / x;i++) {
			for(int j = 10;j <= n - 10 * x / y;j++) {
				if(i * x + j * y == n ) {
					count++;
				}
			}
		}
		System.out.println(count);
		}
	}

Python :

c = 0
s = input().split()
n = int(s[0])
x = int(s[1])
y = int(s[2])
for i in range(1, n // x + 1):
    j = (n - i * x) // y
    if x * i + y * j == n and i >= 10 and j >= 10:
        c += 1
print(c)