Total Daily Steps

Northwind Health ships a fitness band that writes one step count into the device log every hour. At midnight the phone app has to show a single number for the day. The log it is handed is just the raw hourly counts, in the order they were recorded, with nothing added up yet.

Task: Print the day's total step count.

Input

The first line holds a single integer n, the number of hourly readings. Each of the next n lines holds one reading: a whole number of steps. There is always at least one reading.

Output

One line holding the total as a whole number. No decimal point and no thousands separator: 2500, never 2500.0 and never 2,500.

Example:

Input:
3
500
1200
800

Output:
2500