#include<stdio.h>
int main(){
    int L,M,N,i,sum=0;
    
    scanf("%d %d %d",&L,&M,&N);
    sum=sum+(L%25);
    M=M+(L/25);
    sum=sum+(M%4);
    N=N+(M/4);
    sum=sum+(N%10);
    printf("%d",sum);
}