CSES - A30 Standard VByte
  • Time limit: 1.00 s
  • Memory limit: 512 MB

Implement VByte encoding and decoding.

The binary needs to support the "-s" command line flag, that indicates that the input is sorted and differences between subsequent numbers should be stored instead of numbers themselves.


A binary input stream, consisting of 64-bit unsigned integers. The first integer, n, is how many additional integers are in the input.


After encoding the n integers, output to cerr the number of blocks used to encode the input, after this, repeate back the input sequence.


  • n << 10^8



2, 7, 500

(in 64-bit binary)


3, 7, 500

I.e. The number of blocks = 3, followed by the input integers 7 and 500.