Fibonotci

2000ms

262144K

Description:

Fibonotci sequence is an integer recursive sequence defined by the recurrence relation

F_n = s_n - 1·F_n - 1 + s_n - 2·F_n - 2 with F₀ = 0, F₁ = 1

Sequence s is an infinite and almost cyclic sequence with a cycle of length N. A sequence s is called almost cyclic with a cycle of length N if $\text{[math]}$ , for i ≥ N, except for a finite number of values s_i, for which $\text{[math]}$ (i ≥ N).

Following is an example of an almost cyclic sequence with a cycle of length 4:

s = (5,3,8,11,5,3,7,11,5,3,8,11,…)

Notice that the only value of s for which the equality $\text{[math]}$ does not hold is s₆ (s₆ = 7 and s₂ = 8). You are given s₀, s₁, ...s_N - 1 and all the values of sequence s for which $\text{[math]}$ (i ≥ N).

Find $\text{[math]}$ .

Input:

The first line contains two numbers K and P. The second line contains a single number N. The third line contains N numbers separated by spaces, that represent the first N numbers of the sequence s. The fourth line contains a single number M, the number of values of sequence s for which $\text{[math]}$ . Each of the following M lines contains two numbers j and v, indicating that $\text{[math]}$ and s_j = v. All j-s are distinct.

1 ≤ N, M ≤ 50000
0 ≤ K ≤ 10¹⁸
1 ≤ P ≤ 10⁹
1 ≤ s_i ≤ 10⁹, for all i = 0, 1, ...N - 1
N ≤ j ≤ 10¹⁸
1 ≤ v ≤ 10⁹
All values are integers

Output:

Output should contain a single integer equal to $\text{[math]}$ .

Sample Input:

Sample Output:

Informação

Provedor Codeforces

Código CF575A