#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main(){
    char str[100];
    int len=strlen(str);
    if(str[len -1]=='\n'){
        str[len - 1]='\0';
        len--;
    }
    int i=len-1;
    while(i>-0 && !issapace(str[i])){
        i--;
    }
    int wordLen =0;
    while(i>=0 && !isspace(str[i])){
     wordlen++;
     i--;
    }
    printf("%d\n",WordLen);
    return 0;
}