Birthdays

If someone in SCS birthday celebration arranged. Help organizers find out how many times they hold birthday parties for a change SCS.August.

Specifications

Input

Count SCS-childers, celebrate birthdays in August, then the month, these anniversaries are marked. The number of birthdays in SCS.August not more than 300.

Output

You want to display the number of holidays.

Problem information

Time Limit: 1 seconds
Memory Limit: 64 MB
Balls for the passed test: 10
Complexity: 5% 90/95

Example

Example input

Sample 1
6 1 2 5 2 2 20

Sample 2
5 4 6 4 4 4

Example output

Sample 1
4

Sample 2
2

← Lost card

Problems

The next number →