From d5b9eb00111164014b415a53159e717a73197027 Mon Sep 17 00:00:00 2001 From: JHLEE325 <82587652+JHLEE325@users.noreply.github.com> Date: Fri, 19 Sep 2025 07:59:22 +0900 Subject: [PATCH] =?UTF-8?q?[20250919]=20BOJ=20/=20G5=20/=201=ED=95=99?= =?UTF-8?q?=EB=85=84=20/=20=EC=9D=B4=EC=A4=80=ED=9D=AC?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../19 BOJ G5 1\355\225\231\353\205\204.md" | 37 +++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 "JHLEE325/202509/19 BOJ G5 1\355\225\231\353\205\204.md" diff --git "a/JHLEE325/202509/19 BOJ G5 1\355\225\231\353\205\204.md" "b/JHLEE325/202509/19 BOJ G5 1\355\225\231\353\205\204.md" new file mode 100644 index 00000000..fed56c46 --- /dev/null +++ "b/JHLEE325/202509/19 BOJ G5 1\355\225\231\353\205\204.md" @@ -0,0 +1,37 @@ +```java +import java.io.*; +import java.util.*; + +public class Main { + + public static void main(String[] args) throws IOException { + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + StringTokenizer st; + + int n = Integer.parseInt(br.readLine()); + int[] arr = new int[n]; + long[][] dp = new long[n - 1][21]; + + st = new StringTokenizer(br.readLine()); + for (int i = 0; i < n; i++) { + arr[i] = Integer.parseInt(st.nextToken()); + } + + dp[0][arr[0]] = 1; + + for (int i = 1; i < n - 1; i++) { + for (int j = 0; j <= 20; j++) { + int plus = j + arr[i]; + int minus = j - arr[i]; + + if (plus <= 20) + dp[i][plus] += dp[i - 1][j]; + if (minus >= 0) + dp[i][minus] += dp[i - 1][j]; + } + } + + System.out.println(dp[n - 2][arr[n - 1]]); + } +} +```