#include <stdio.h>

int main() 
{
    char arr[5001] = {0};
    gets(arr);
    int count = 0;
    int len = strlen(arr);
    for (int i = len - 1; i  >= 0; i--)
    {
        if(arr[i]!= ' ')
        count++;
        else
        break;
    }
    printf("%d",count);
}