#include<iostream>
#include<fstream>
using namespace std;

int main()
{
	ifstream f("text.in");
	ofstream g("test.out");
	
	char x[1500002];
	
	f.get(x,1500000);
	int cont=0,cont2=0;
	
for(int i=0;i<=strlen(x);i++)
{
	if(isalpha(x[i]))
	{
		cont++;
	}
	else
	{
		if(isalpha(x[i-1])) cont2++;
	}
}
cont=cont/cont2;
g<<abs(cont);
		
}