Rubik’s Cube Coloring (easy version) codeforces solution- It is the easy version of the problem. The difference is that in this version, there are no nodes with already chosen colors. Theofanis is starving, and he wants to eat his favorite food, sheftalia. However, he should first finish his homework. Can you help him with this problem? Rubik’s Cube Coloring (easy version) solution codeforces You have a perfect binary tree of 2k−12k−1 nodes — a binary tree where all vertices ii from 11 to 2k−1−12k−1−1 have exactly two children: vertices 2i2i and 2i+12i+1. Vertices from 2k−12k−1 to 2k−12k−1 don’t have any children. You want to color its vertices with the 66 Rubik’s cube colors (White, Green, Red, Blue, Orange and Yellow).

Rubik’s Cube Coloring (easy version) codeforces solution

It is the easy version of the problem. The difference is that in this version, there are no nodes with already chosen colors.

Theofanis is starving, and he wants to eat his favorite food, sheftalia. However, he should first finish his homework. Can you help him with this problem? Rubik’s Cube Coloring (easy version) solution codeforces

You have a perfect binary tree of 2k12k−1 nodes — a binary tree where all vertices ii from 11 to 2k112k−1−1 have exactly two children: vertices 2i2i and 2i+12i+1. Vertices from 2k12k−1 to 2k12k−1 don’t have any children. You want to color its vertices with the 66 Rubik’s cube colors (White, Green, Red, Blue, Orange and Yellow).

Let’s call a coloring good when all edges connect nodes with colors that are neighboring sides in the Rubik’s cube.

 

A picture of Rubik’s cube and its 2D map.More formally:

  • a white node can not be neighboring with white and yellow nodes;
  • a yellow node can not be neighboring with white and yellow nodes;
  • a green node can not be neighboring with green and blue nodes;
  • a blue node can not be neighboring with green and blue nodes;
  • a red node can not be neighboring with red and orange nodes;
  • an orange node can not be neighboring with red and orange nodes;
  • Rubik’s Cube Coloring (easy version) solution codeforces

You want to calculate the number of the good colorings of the binary tree. Two colorings are considered different if at least one node is colored with a different color.

The answer may be too large, so output the answer modulo 109+7109+7.

Rubik’s Cube Coloring (easy version) solution codeforces

The first and only line contains the integers kk (1k601≤k≤60) — the number of levels in the perfect binary tree you need to color.

Output

Print one integer — the number of the different colorings modulo 109+7109+7.

Rubik’s Cube Coloring (easy version) solution codeforces

input

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3

Rubik’s Cube Coloring (easy version) solution codeforces

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24576

input

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14

Rubik’s Cube Coloring (easy version) solution codeforces

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934234
Note

In the picture below, you can see one of the correct colorings of the first example.

 

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