#include<bits/stdc++.h>
using namespace std;
int main(){
    int i,j,k,s=0;
    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: chenmingyu
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/