P1458 [CF551D] GukiZ and Binary Operations
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题目描述

We all know that GukiZ often plays with arrays.

Now he is thinking about this problem: how many arrays a, of length n, with non-negative elements strictly less then 2l meet the following condition: $$(a_{1}\ \mathrm{and}\ a_{2})\ \mathrm{or}\ (a_{2}\ \mathrm{and}\ a_{3})\ \mathrm{or}\ldots\ \mathrm{or}\ (a_{n-1}\ \mathrm{and}\ a_{n})=k$$? Here operation $$\text{and}$$ means bitwise AND (in Pascal it is equivalent to and, in C/C++/Java/Python it is equivalent to &), operation $$\sigma_{1}^{2}$$ means bitwise OR (in Pascal it is equivalent to $$\sigma_{1}^{2}$$, in C/C++/Java/Python it is equivalent to |).

Because the answer can be quite large, calculate it modulo m. This time GukiZ hasn't come up with solution, and needs you to help him!

Input

First and the only line of input contains four integers n, k, l, m (2 ≤ n ≤ 1018, 0 ≤ k ≤ 1018, 0 ≤ l ≤ 64, 1 ≤ m ≤ 109 + 7).

Output

In the single line print the number of arrays satisfying the condition above modulo m.

输入格式

见题面 Input 部分

输出格式

见题面 Output 部分

样例输入
2 1 2 10
样例输出
3
提示

In the first sample, satisfying arrays are {1, 1}, {3, 1}, {1, 3}.

In the second sample, only satisfying array is {1, 1}.

In the third sample, satisfying arrays are {0, 3, 3}, {1, 3, 2}, {1, 3, 3}, {2, 3, 1}, {2, 3, 3}, {3, 3, 0}, {3, 3, 1}, {3, 3, 2}, {3, 3, 3}.