#define _CRT_SECURE_NO_WARNINGS
#include <string.h>
#include <stdio.h>

int main()
{
	char s1[1001];
	int count = 0;
	scanf("%[^\n]s", s1);
	char* ptr = strtok(s1, " .,");


	while (ptr != NULL)
	{
		ptr = strtok(NULL, " .,");
	
	if (ptr != NULL && strcmp(ptr, "the") == 0)
		count++;
     }
	printf("%d", count);
	return 0;
}