#include <cstdio>

int main()
{
	char c;
	bool t = false;
	int word = 0,chr = 0;
	FILE*f;
	f = fopen("text.in","r");
	while (!feof(f))
	{
		fscanf(f,"%c",&c);
		if ( (t) && !( (c>65) && (c<127) ) )
		{
			chr++;
			t = false;
		}
		if ( (c>65) && (c<127) )
		{
			word++;
			t = true;
		}
	}
	
	fclose(f);
	f=fopen("text.out","w");
	fprintf(f,"%d",word/chr);
	fclose(f);
	
	return 0;
}