pe17

#include <stdio.h>

typedef struct
{
  int numbers[20];
  int tens[10];
  int hundred;
  int thousand;
  int and;
} Size;

Size size =
{
  {0,3,3,5,4,4,3,5,5,4,3,6,6,8,8,7,7,9,8,8},
  {0,0,6,6,5,5,5,7,6,6},
  7,
  8,
  3
};

int main()
{
  int i, acc = 0;

  for (i=1; i<=1000; i++)
  {
    if (i == 1000)
      acc += size.numbers[1] + size.thousand;
    else if (i >= 100)
      acc += size.numbers[i/100] + size.hundred + (i%100!=0?size.and:0);

    acc += size.tens[(i/10)%10];
    acc += size.numbers[(i%100>=20)?i%10:i%100];
  }

  printf("%d\n",acc);

  return 0;
}