low temperature in christmas
Source: ItaMO 2004, p1
March 3, 2012
number theory proposednumber theory
Problem Statement
Observing the temperatures recorded in Cesenatico during the December and January, Stefano noticed an interesting coincidence: in each day of this period, the low temperature is equal to the sum of the low temperatures the preceeding day and the succeeding day.
Given that the low temperatures in December and January were and respectively, find the low temperature in December .