#include<fstream>
#include<string>
using namespace std;
int main()
{char a[300000],b[300000],*p,s[]="0123456789~`!@#$%^&*()-_+=*/':;?/>.<, ",*p1;long long k=0,x=0,y;
	ifstream f("text.in");ofstream g("text.out");
	f.getline(a,100);
	p1=strchr(a,'"');
	while(p1)
		{k++;p1=strchr(p1+1,'"');}x-=k;
	p=strtok(a,s);
	while(p)
	{
		k++;
		strcat(b,p);
		p=strtok(NULL,s);
	}
	x=strlen(b);
	y=x/k;
	g<<y;
	f.close();g.close();
return 0;}