#include <stdio.h>
int main() {
    char arr[10] = {0};
    int num = 0;
    gets(arr);
    for (int i = 0; arr[i] != '\0'; i++) {
        if (arr[i] != ' ' && arr[i] != '\n') {
            num++;
        }
    }
    printf("%d", num);
    return 0;
}