C++ :

# include <iostream>
using namespace std;
int main(){
	int count = 0;
	for (int i=1;i<=(1000-10-5)/50;i++){
		
		for (int j=1;j<=(1000-50*i-5)/10;j++){
			int last = 1000 - 50 * i - j * 10;
			if (last % 5 == 0 && i + j + last / 5 == 100){
				count++;
				
			} 
		}
	}
	cout<<count<<endl;
}