Numeral system - 1
Very easy
Execution time limit is 1 second
Runtime memory usage limit is 128 megabytes
The number a is given in binary notation. Print the number a in hexadecimal notation without leading zeros.
Input
The number a in binary notation, 0 < length of a number ≤ 10^4.
Output
Print the number a in hexadecimal notation, using symbols '0', …, '9' and 'A', …, 'F'.
Examples
Input #1
Answer #1
Input #2
Answer #2
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