#include <stdio.h>
#include <ctype.h>

int main() {
    unsigned int flag = 0;	/* 1: if reading non-space chars */
    unsigned int counter= 0;

    for (int c = getchar(); c != EOF; c = getchar()) {
	if (isspace(c)) {
	    if (flag == 1) {
		flag = 0;
		counter += 1;
	    }
	} else {
	    flag = 1;
	}
    }
    if (flag == 1)
	counter += 1;
    printf("%u\n", counter);
}