#include <stdio.h>
#include <string.h>

char* strip (char* input)
{
    int loop;
    char *output = (char*) malloc (strlen(input));
    char *dest = output;

    if (output)
    {
        for (loop=0; loop<strlen(input); loop++)
            if (input[loop] != ' ')
                *dest++ = input[loop];

        *dest = '\0';
    }
    return output;
}

int main ()
{

   int len,med,count = 1, i;
   char inp[256];
   gets (inp);
   char* inp2 = strip (inp);
   len=strlen(inp2);
for (i=0; inp[i]!='\0'; i++)
        {
        if(inp[i]==' ')
                {
                count++;
                }
        }
    med=len/count;
    printf("%d\n",med);
  return 0;
}