Description

The library of Wind Peak Elementary School has 312 seats in total. The first row has 15 seats, and each subsequent row has 2 more seats than the previous row. How many seats are in the last row? How many rows are there in total?
Write a program to calculate this.

Input Format

None.

Output Format

The second-to-last line should output the number of seats in the last row.
The last line should output the total number of rows.

Sample

None

Number of seats in the last row: 37
Number of rows: 12