[BOJ] 14495 피보나치 비스무리한 수열 (S4)

Author: abcxj123

정건우/9주차/260226.java

@@ -0,0 +1,27 @@
+//https://www.acmicpc.net/problem/14495
+import java.util.Scanner;
+
+public class BOJ_S4_14495_피보나치비스무리한수열 {
+    public static void main(String[] args) {
+        Scanner scann = new Scanner(System.in);
+
+        int N = scann.nextInt();
+
+        if(N <= 3) {
+            System.out.println(1);
+            return;
+        }
+
+        long [] dp = new long[N+1];
+
+        dp[1] = 1;
+        dp[2] = 1;
+        dp[3] = 1;
+
+        for (int i = 4; i <= N; i++) {
+            dp[i] = dp[i-1] + dp[i-3];
+        }
+
+        System.out.println(dp[N]);
+    }
+}