TY JOUR TI INFORMATION TECHNOLOGY IN COMBINATORICS AND MODELLING OF RANDOM QUANTITIES KW information technologies KW computer modeling KW probabilistic problems KW combinatorics KW placement KW permutations KW combinations KW random quantities KW pseudorandom numbers KW computer program JO MONITORING AND EXPERTISE IN SAFETY SYSTEM AU Labinsky, A.Y. PY 2026 IS 2026 PB Saint-Petersburg University of State Fire Service of Emercom of Russia