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authorAnton Luka Šijanec <anton@sijanec.eu>2023-11-18 23:18:47 +0100
committerAnton Luka Šijanec <anton@sijanec.eu>2023-11-18 23:18:47 +0100
commitb7e06e086be6d0fea2dde4c766ad8cedb4fe94fe (patch)
tree6de82dfa3b483d7d193112d0306e69c7cd423ead /šola/p1/dn
parentdn03 (diff)
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Diffstat (limited to 'šola/p1/dn')
-rw-r--r--šola/p1/dn/DN04_63230317.java31
1 files changed, 31 insertions, 0 deletions
diff --git a/šola/p1/dn/DN04_63230317.java b/šola/p1/dn/DN04_63230317.java
new file mode 100644
index 0000000..55c8b75
--- /dev/null
+++ b/šola/p1/dn/DN04_63230317.java
@@ -0,0 +1,31 @@
+import java.util.*;
+public class DN04_63230317 {
+ public static void main (String[] args) {
+ Scanner sc = new Scanner(System.in);
+ int n = sc.nextInt();
+ int k = sc.nextInt();
+ int[] oznake_pojavitve = new int[1000];
+ int[] seznam_oznak = new int[n];
+ int max_oznaka = 0; // samo za DEBUG
+ for (int i = 0; i < n; i++) {
+ int oznaka = sc.nextInt();
+ oznake_pojavitve[oznaka-1]++;
+ seznam_oznak[i] = oznaka;
+ if (oznaka > max_oznaka) // samo za DEBUG
+ max_oznaka = oznaka; // samo za DEBUG
+ }
+ if (System.getenv("DN04_DEBUG") != null) {
+ for (int i = 0; i < max_oznaka; i++)
+ System.err.print(i+1 + "\t");
+ System.err.println("");
+ for (int i = 0; i < max_oznaka; i++)
+ System.err.print(oznake_pojavitve[i] + "\t");
+ System.err.println("");
+ }
+ long parov = 0;
+ for (int i = 0; i < n; i++)
+ if (k-seznam_oznak[i]-1 >= 0 && k-seznam_oznak[i]-1 < 1000)
+ parov += oznake_pojavitve[k-seznam_oznak[i]-1];
+ System.out.println(parov);
+ }
+}