#include<stdio.h>
#include<string.h>
#include<ctype.h>
int lengthofLastWord(char*s) {
    int Length=0;
    int tail=strlen(s) - 1;
    while (tail>=0 && s[tail]==' ') {
        tail--;
    }
    while (tail >= 0 && s[tail] != ' ') {
        length++;
        tail--;
    }
    return length;
}
int main() {
    char s[100];
    fgets(s,sizeof(s),stdin);
    s[strcspn(s,"\n")]=0;
    printf("%d\n",lengthofLastWord(s));
    return 0;
}