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

int main() {
    unsigned int w = 0;		/* counter */
    int c = getchar();

    while (c != EOF) {
	if (isspace(c)) {
	    c = getchar();
	} else {
	    ++w;
	    do {
		c = getchar();
	    } while (c != EOF && !isspace(c));
	}
    }

    printf("%u\n", w);
    return 0;
}