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LuckBalance.java
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LuckBalance.java
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import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;
public class LuckBalance {
// https://www.hackerrank.com/challenges/luck-balance/problem
// Complete the luckBalance function below.
static int luckBalance(int k, int[][] contests) {
int sum = 0;
int countImportant = 0;
for(int i = 0; i<contests.length;i++) {
if(contests[i][1] > 0)
countImportant++;
}
countImportant -= k;
Arrays.sort(contests, new Comparator<int[]>() {
public int compare(int[] a, int[] b) {
return Integer.compare(a[0], b[0]);
}
});
for(int i =0 ; i<contests.length ;i++) {
if(contests[i][1] > 0 && countImportant > 0) {
sum -=contests[i][0];
countImportant--;
continue;
}
sum += contests[i][0];
}
return sum;
}
private static final Scanner scanner = new Scanner(System.in);
public static void main(String[] args) throws IOException {
BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));
String[] nk = scanner.nextLine().split(" ");
int n = Integer.parseInt(nk[0]);
int k = Integer.parseInt(nk[1]);
int[][] contests = new int[n][2];
for (int i = 0; i < n; i++) {
String[] contestsRowItems = scanner.nextLine().split(" ");
scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");
for (int j = 0; j < 2; j++) {
int contestsItem = Integer.parseInt(contestsRowItems[j]);
contests[i][j] = contestsItem;
}
}
int result = luckBalance(k, contests);
bufferedWriter.write(String.valueOf(result));
bufferedWriter.newLine();
bufferedWriter.close();
scanner.close();
}
}