#include <stdio.h>
int main(void)
{
  int L,M,N;
  int S,N_th,N_hu,N_tw,N_on;

  scanf("%d%d%d",&L,&M,&N);

  S = 100*L+25*M+N;
  N_th = S/1000;
  N_hu = (S%1000)/100;
  N_tw = (S%100)/25;
  N_on = (S%25);
  
  printf("%d\n",N_hu+N_tw+N_on);

  return 0;
}