#include<bits/stdc++.h>
using namespace std;
int main(){
    char v[1000];
    cin.getline(v,1000);
    int cnt=0;
    for(int i=0;i<strlen(v);i++){
        if(v[i]==' '&&v[i+1]!=' '||v[i]=='\0'){
            cnt++;
        }
    }
    cout<<cnt;
    return 0;
}
/**************************************************************
	Problem: 1106
	User: luyanchen
	Language: C++
	Result: Wrong Answer
****************************************************************/