#D2705. Number Clicker
Number Clicker
Number Clicker
Allen is playing Number Clicker on his phone.
He starts with an integer u on the screen. Every second, he can press one of 3 buttons.
- Turn u → u+1 \pmod{p}.
- Turn u → u+p-1 \pmod{p}.
- Turn u → u^{p-2} \pmod{p}.
Allen wants to press at most 200 buttons and end up with v on the screen. Help him!
Input
The first line of the input contains 3 positive integers: u, v, p (0 ≤ u, v ≤ p-1, 3 ≤ p ≤ 10^9 + 9). p is guaranteed to be prime.
Output
On the first line, print a single integer ℓ, the number of button presses. On the second line, print integers c_1, ..., c_ℓ, the button presses. For 1 ≤ i ≤ ℓ, 1 ≤ c_i ≤ 3.
We can show that the answer always exists.
Examples
Input
1 3 5
Output
2 1 1
Input
3 2 5
Output
1 3
Note
In the first example the integer on the screen changes as 1 → 2 → 3.
In the second example the integer on the screen changes as 3 → 2.
inputFormat
Input
The first line of the input contains 3 positive integers: u, v, p (0 ≤ u, v ≤ p-1, 3 ≤ p ≤ 10^9 + 9). p is guaranteed to be prime.
outputFormat
Output
On the first line, print a single integer ℓ, the number of button presses. On the second line, print integers c_1, ..., c_ℓ, the button presses. For 1 ≤ i ≤ ℓ, 1 ≤ c_i ≤ 3.
We can show that the answer always exists.
Examples
Input
1 3 5
Output
2 1 1
Input
3 2 5
Output
1 3
Note
In the first example the integer on the screen changes as 1 → 2 → 3.
In the second example the integer on the screen changes as 3 → 2.
样例
1 3 5
2
1 1
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