【CodeForces 555A】Case of Matryoshkas(模拟)


A. Case of Matryoshkas
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output

Andrewid the Android is a galaxy-famous detective. He is now investigating the case of vandalism at the exhibition of contemporary art.

The main exhibit is a construction of n matryoshka dolls that can be nested one into another. The matryoshka dolls are numbered from1 to n. A matryoshka with a smaller number can be nested in a matryoshka with a higher number, two matryoshkas can not be directly nested in the same doll, but there may be chain nestings, for example, 1 → 2 → 4 → 5.

In one second, you can perform one of the two following operations:

  • Having a matryoshka
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