Bodybuilder

After solving programming problems for years, Chef has become lazy and decided to get a better physique by doing some weight lifting exercises. On any regular day, Chef does $N$ exercises at times $A_1, A_2, \ldots, A_N$ (in minutes, all distinct) and each exercise provides a tension of $B_1, B_2, \ldots, B_N$ units. In the period between two consecutive exercises, his muscles relax $R$ units o