Photo Count by Date

You are given n photo timestamps in the format YYYY-MM-DD hh:mm:ss. Your task is to group the photos by their date (YYYY-MM-DD) and count how many photos were taken on each date.

The output should list each unique date in chronological order along with the corresponding count.

Note: The input is provided via standard input and the result should be printed to standard output. If there are no photos, nothing should be printed.

Example:

Input:
5
2023-09-21 09:12:33
2023-09-21 10:45:22
2023-09-22 14:22:08
2023-09-23 11:55:19
2023-09-21 23:59:59
Output:
2023-09-21 3
2023-09-22 1
2023-09-23 1

</p>

inputFormat

The first line of input contains an integer n representing the number of photo timestamps.

Each of the following n lines contains a timestamp in the format YYYY-MM-DD hh:mm:ss.

outputFormat

For each distinct date in chronological order, print a line containing the date followed by the number of photos taken on that date. Separate the date and count by a space.

## sample

3
2022-05-01 12:34:56
2022-05-01 13:34:56
2022-05-01 14:34:56

2022-05-01 3

</p>