#include <stdio.h>

int main(){
  int l, m, n;

  scanf("%d", &l);
  scanf("%d", &m);
  scanf("%d", &n);

  m += n / 25;
  n = n % 25;
  
  l += m / 4;
  m = m % 4;
  
  l = l % 10;
  
  printf("%d\n", l+m+n);
}