#include<bits/stdc++.h>
using namespace std;
int main()
{
    char c;
    int k=0;
    while(scanf("%c", &c)!=EOF)
    {
        if(c==' ') continue;
        if(c=='\n') break;
        ++k;
    }
    printf("%d\n", k);
    return 0;
}