#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#define true 1
#define false 0

int validateWord(char* str)
{
	int lettersCounter = strlen(str);
	if(((str[0] >= 'a') && (str[0] <= 'z')) || ((str[0] >= 'A') && (str[0] <= 'Z')))
	{
		return true;
	}
	else if(str[1] == '\0')
	{
		return false;
	}
	else if(((str[lettersCounter/2] >= 'a') && (str[lettersCounter/2] <= 'z')) || ((str[lettersCounter/2] >= 'A') && (str[lettersCounter/2] <= 'Z')))
	{
		return true;
	}
	return false;
}
int countWords(FILE *f)
{
	int count = 0;
	char buff[255];
	while (fscanf(f, "%s", buff) != EOF)
	{
		if(validateWord(buff))
			count++;
	}
	return count;
}
void ednakvi(FILE *fp, int wordCounter)
{
	rewind(fp);
	int i = 0,k = 0,cnt = 1;
	char *arr[wordCounter];
    for (i=0; i<wordCounter; i++)
    	arr[i] = (char *)malloc(255);
	i = 0;
	while(fscanf(fp, "%s", arr[i]) != EOF)
	{
		if(validateWord(arr[i]))
		{
			i++;
		}
	}
	for(i=0;i < wordCounter;i++)
	{
		if(arr[i][0] != '-')
		{
			for(k = i+1;k < wordCounter;k++)
			{
				if(!strcmp(arr[i],arr[k]))
				{
					arr[k][0] = '-';
					cnt++;
				}
			}

		}
		else
		{
			cnt = 0;
		}
		if(cnt >= 1)
		{
			printf("%s : %d\n",arr[i],cnt);
		}
		cnt = 1;
	}

}


int main(int agrc, char* argv[])
{
	int wordCount = 0;
	FILE *rFile = fopen(argv[1], "r");
	wordCount = countWords(rFile);
	printf("%d\n", wordCount);
	ednakvi(rFile,wordCount);
	return 0;
}