#include<stdio.h>
#include<string.h>


int main(){
int a,b,c;
int i;
int x;
int z=0;
scanf("%d",&a);
scanf("%d",&b);
scanf("%d",&c);

	b+=a/25;
	a%=25;
c+=b/4;
b%=4;
x=c/10;
c%=10;
z=a+b+c+x;
printf("%d\n",z-1);
	return 0;
}