Ofirmă are două tipuri de camioane: camioane de tipul 1, care pot transporta câte t1 tone de marfă pe zi, și camioane de tipul 2, care pot transporta câte t2 tone de marfă pe zi. știind că firma are n camioane de tipul 1 și m camioane de tipul 2, câte tone de marfă pot transporta camioanele firmei în z zile.

there is no universally accepted definition of art. although commonly used to describe something of beauty, or a skill which produces an aesthetic result, there is no clear line in principle between (say) a unique piece of handmade sculpture, and a mass-produced but visually attractive item. we might say that art requires thought - some kind of creative impulse - but this raises more questions: for example, how much thought is required? if someone flings paint at a canvas, hoping by this action to create a work of art, does the result automatically constitute art?