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                                        Problem E
Binary Exponentiation
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  You are given non-negative integers $a, e, m$ and should print $a^e \pmod{m}$.
Input
The first and only line of input contains non-negative integers $a, e, m \leq 10^{18}$ separated by a space. We also have $m \geq 2$.
Output
Print $a^e \pmod{m}$.
| Sample Input 1 | Sample Output 1 | 
|---|---|
          15 7 99  | 
        
          27  | 
      
