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Card.java
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Card.java
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import java.util.*;
public class Card {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
// extract n, t, k from the first line
int n = sc.nextInt();
int t = sc.nextInt();
int k = sc.nextInt();
int [] numCards = new int[t];
Cards [] sequence = new Cards[t];
// extract the list of cards from the second line
for (int m = 0; m < n; m++) {
int toAdd = sc.nextInt();
numCards[toAdd - 1]++;
}
// extracting each buy and sell price for each card type
for (int i = 0; i < t; i++) {
long buyP = sc.nextInt();
long sellP = sc.nextInt();
// add them to the new card
sequence[i] = (new Cards(i+1, buyP, sellP, numCards[i]));
}
// sort according to the Overall defined, in descending order, that is, those with higher values gained from buying and not selling will be put in front
Arrays.sort(sequence, new Overall());
int l = 0;
long profit = 0;
while (l < k) {
profit -= (2 - numCards[sequence[l].name - 1]) * sequence[l].buyPrice;
l += 1;
}
while (l < t) {
profit += numCards[sequence[l].name - 1] * sequence[l].sellPrice;
l += 1;
}
System.out.println(profit);
}
}
class Cards {
public int name;
public int owned;
public long buyPrice;
public long sellPrice;
public Cards (int name, long buyPrice, long sellPrice, int owned) {
this.name = name;
this.buyPrice = buyPrice;
this.sellPrice = sellPrice;
this.owned = owned;
}
public long shouldOwn() {
if (this.owned == 0) {
return - 2 * buyPrice;
} else if (this.owned == 1) {
return - buyPrice - sellPrice;
} else {
return - 2 * sellPrice;
}
}
}
class Overall implements Comparator<Cards> {
public int compare(Cards card1, Cards card2) {
if (card2.shouldOwn() < card1.shouldOwn()) {
return -1;
}
else if (card2.shouldOwn() > card1.shouldOwn()) {
return 1;
}
else {
return 0;
}
}
}