first commit

2022-12-15 23:51:04 +07:00
commit 87d51fb251
292 changed files with 12623 additions and 0 deletions
@@ -0,0 +1,28 @@
+import java.io.*;
+import java.util.*;
+
+public class non {
+
+    public static void main(String[] args) throws IOException {
+        Scanner sc = new Scanner(System.in);
+        int n = sc.nextInt();
+        long k = sc.nextLong();
+        long[] a = new long[n];
+        for(int i=0;i<n;i++) a[i] = sc.nextLong();
+        Arrays.sort(a);
+        int cntn = 0;
+        for(long i:a) if(i<0) cntn++;
+        long sum = 0;
+        if(k<=cntn){
+            for(int i=0;i<k;i++) a[i] = -a[i];
+        }else{
+            for(int i=0;i<cntn;i++) a[i] = -a[i];
+            Arrays.sort(a);
+            k-=cntn;
+            if(k%2==1) a[0] = -a[0];
+        }
+        for(long i:a) sum+=i;
+        System.out.println(sum);
+    }
+}
+