Statement

Luca recently moved to Lugano, Switzerland, to complete his graduate studies. He is eager to discover the cultural scene of the city and he is constantly looking for cool events to participate in! His main concern is about the prices of the tickets for those events, which are often not very cheap (like almost everything in Switzerland!). The university comes to the rescue, as it offers some vouchers to attend events for free. You can buy the ticket for a certain event if you use a voucher whose value is high enough (at least equal to or greater than the price of the event). Once you use a voucher to buy a ticket, it cannot be used anymore. Luca made a list of N interesting events with their prices and, so far, has collected V vouchers of different values from his university. He has no particular preference regarding the kind of event; he just wants to participate in as many as possible and asks you to help him.