#include <stdio.h>

int main(void){
  int L, M, N, sum, s, l, m, n;

  scanf("%d%d%d", &L, &M, &N);	/* L:100 M:25 N:1 */

  sum = 100*L + 25*M + N;
  l = sum / 100;
  s=sum%100;
  m=s/25;
  s=s%25;
  n=s;

  printf("%d\n", l+m+n);

  return 0;
}