#include <stdio.h>
#include <string.h>
#define SMAX 10001
#define INF 1e9

int main (void)
{
  int i, j, k, slen, cost[10] = {0, 1, 2, 3, 4, 1, 2, 3, 4, 5}, dp[2][2] = {0, INF};
  char str[SMAX+1];
  scanf("%s%*c", str);
  slen = strlen(str);
  for (i = 0; i < slen; i++) {
    int n = str[slen-1-i] - '0';
    dp[(i+1)&1][0] = dp[(i+1)&1][1] = INF;
    for (j = 0; j < 2; j++) {
      for (k = 0; k <= 9; k++) {
        if ((k % 5) != 0 && ((n + j + k) % 5) != 0) continue;
        if (n + j + k <= 9) {
          if (dp[(i+1)&1][0] > dp[i&1][j] + cost[k] + cost[n+j+k]) {
            dp[(i+1)&1][0] = dp[i&1][j] + cost[k] + cost[n+j+k];
          }
        }
        else {
          if (dp[(i+1)&1][1] > dp[i&1][j] + cost[k] + cost[n+j+k-10]) {
            dp[(i+1)&1][1] = dp[i&1][j] + cost[k] + cost[n+j+k-10];
          }
        }
      }
    }
  }
  if (dp[slen&1][0] < dp[slen&1][1] + 1) printf("%d\n", dp[slen&1][0]);
  else printf("%d\n", dp[slen&1][1] + 1);
}