#include<bits/stdc++.h>
using namespace std;
int main()
{
	int i,j,k,s;
	for(i=1;i<=100/1;i++){
		for(j=1;j<=100/2;j++){
			for(k=1;k<=100/5;k++){
				if(i*1+j*2+k*5==100)
				s++;
			}
		}
	}
	cout<<s;
return 0;

}

/**************************************************************
	Problem: 1025
	User: houshanglin
	Language: C++
	Result: Wrong Answer
****************************************************************/