From bd51d66e42d644ca617b599008f6ac481f278555 Mon Sep 17 00:00:00 2001
From: yuyu0830 <yuyu0830@naver.com>
Date: Mon, 5 Aug 2024 14:46:32 +0900
Subject: [PATCH] =?UTF-8?q?24-08-05=20=EA=B3=84=EB=8B=A8=20=EC=88=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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---
 yuyu0830/DP/1562.cpp | 40 ++++++++++++++++++++++++++++++++++++++++
 yuyu0830/README.md   |  1 +
 2 files changed, 41 insertions(+)
 create mode 100644 yuyu0830/DP/1562.cpp

diff --git a/yuyu0830/DP/1562.cpp b/yuyu0830/DP/1562.cpp
new file mode 100644
index 0000000..cedb9f7
--- /dev/null
+++ b/yuyu0830/DP/1562.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+
+#define MOD 1000000000
+
+using namespace std;
+
+int arr[101][10][1024] = {0, };
+
+int main() {
+    int n; cin >> n;
+
+    for (int i = 1; i < 10; i++) {
+        arr[1][i][1 << i] = 1;
+    }
+
+    for (int i = 2; i <= n; i++) {
+        for (int j = 0; j < 10; j++) {
+            for (int k = 0; k < 1024; k++) {
+                if (j) {
+                    arr[i][j][k | (1 << j)] += arr[i - 1][j - 1][k];
+                    arr[i][j][k | (1 << j)] %= MOD;
+                } 
+
+                if (j != 9) {
+                    arr[i][j][k | (1 << j)] += arr[i - 1][j + 1][k];
+                    arr[i][j][k | (1 << j)] %= MOD;
+                }
+            }
+        }
+    }
+
+    int ans = 0;
+    
+    for (int i = 0; i < 10; i++) {
+        ans += arr[n][i][1023];
+        ans %= MOD;
+    }
+
+    printf("%d\n", ans);
+}
\ No newline at end of file
diff --git a/yuyu0830/README.md b/yuyu0830/README.md
index 4ec30d9..50e1cc9 100644
--- a/yuyu0830/README.md
+++ b/yuyu0830/README.md
@@ -22,4 +22,5 @@
 | 18차시 | 2024.07.06 |  구현  | [2048 (Easy)](https://www.acmicpc.net/problem/12100)  | - |
 | 19차시 | 2024.07.12 |  재귀  | [우수마을](https://www.acmicpc.net/problem/1949)  | - |
 | 20차시 | 2024.07.22 |  LIS  | [가장 긴 증가하는 부분 수열 5](https://www.acmicpc.net/problem/14003)  | - |
+| 22차시 | 2024.08.05 |  DP  | [계단 수](https://www.acmicpc.net/problem/1562)  | - |
 ---
\ No newline at end of file