#include<bits/stdc++.h>
using namespace std;
int main(){
  int i,s=0;
  char a[100],c;
  gets(a);
  if(a[0]!=' ') s=1;
  for(i=1;i<strlen(a);i++){
  if(a[i]!=' '&&a[i+1]==' ') s++;
  }
  cout<<s;
  return 0;
}
/**************************************************************
	Problem: 1106
	User: wtq001
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/