//#include<cstdio>
//#include<cstring>
#include<fstream.h>
//int sep=" /-"
ifstream f("text.in");
ofstream g("text.out");

void cit(int &k, int &l)
{
	char x,y;
	k=0;l=0;
	int p;
//	scanf("%c",&x);
	f>>x;


	while(int(x)>=122 || (int(x)<=97&&int(x)>=90) || int(x)<=65)
		//scanf("%c",&x);
		f.get(x);
		while(!f.eof())
	{
		if( (97<=int(x)&&int(x)<=122) || (65<=int(x)&&int(x)<=90))
			++l;
		else
			++k;
		//scanf("%c",&y);
		f.get(y);
		p=0;
		
		while( ( int(x)>122 || (int(x)<97&&int(x)>90) || int(x)<65 ) && ( int(y)>122 || (int(y)<97&&int(y)>90) || int(y)<65 ) &&!f.eof() )
		{
			x=y;
		//	scanf("%c",&y);
			f.get(y);
//			++p;
		}
		/*if(p)
			l--;*/
		x=y;
	}
}

void afis(int k, int l)
{
	//printf("%d",l/k);
	int nr=l/k;
	g<<l/k;
}



int main()
{
	freopen("text.in","r",stdin);
	freopen("text.out","w",stdout);
	
	int k,l;
	
	
	cit(k,l);
	afis(k,l);
	return 0;
}