#include<stdio.h>
int sum = 0;
bool flag = 0;
int getString()
{
    char ch;
    scanf("%c", &ch);
    if (ch != '\n')getString();
    if (ch != ' ' && (ch >= 'a' && ch <= 'z' || ch >= 'A' && ch <= 'Z') && flag == 0)sum++;
    if (ch == ' ') flag = 1;
    return sum;
}
int main()
{
    int x=getString();
    printf("%d", x);
}