#include<bits/stdc++.h>
using namespace std;
int main()
{
	int i,n,t,s=0;
	char a[999]={'\0'};
	gets(a);
	for(i=0;i<strlen(a);i++){
		if(a[i]!=' '){
			if(a[i+1]==' '||a[i+1]=='\0'){
				s++;
			}
		}
	}
	cout<<s;
	return 0;
}

/**************************************************************
	Problem: 1106
	User: zzz
	Language: C++
	Result: Accepted
	Time:9 ms
	Memory:2072 kb
****************************************************************/