Fallthrough State Trace

Source: Phước Hưng OJ

Version: Phuoc Hung OJ Extended

Problem Statement

A C program starts with a = 0 and executes switch(k) with case 1: a += 1; case 2: a += 2; break; default: a += 4;. There is deliberately no break between cases 1 and 2. Print the final value of a.

Input

One integer k.

Output

Print the final integer value of a after the switch.

Subtasks

• Subtask 1 (20%): k = 1.
• Subtask 2 (30%): k is 1 or 2.
• Subtask 3 (50%): -10 <= k <= 10.

Examples

Example 1

Input

1

Output

3

Explanation

Starting at 0, case 1 adds 1 then falls through to case 2, adding 2, so the answer is 3.

Example 2

Input

2

Output

2

Explanation

Entry at case 2 adds only 2 and then breaks.