#include <stdio.h>
int main() {
char title = ' ';
int times = 0;
while (scanf("%c", &title) != -1) {
if (title != ' ' && title != '\n') {
times++;
}
}
printf("%d", times);
return 0;
}

#include <stdio.h>
int main() {
char title = ' ';
int times = 0;
while (scanf("%c", &title) != -1) {
if (title != ' ' && title != '\n') {
times++;
}
}
printf("%d", times);
return 0;
}