From 0f27661a4a2d3a49915d7720809b010cf00a752b Mon Sep 17 00:00:00 2001 From: zinnnn37 Date: Tue, 9 Dec 2025 23:43:58 +0900 Subject: [PATCH] =?UTF-8?q?[20251209]=20BOJ=20/=20G5=20/=201=ED=95=99?= =?UTF-8?q?=EB=85=84=20/=20=EA=B9=80=EB=AF=BC=EC=A7=84?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../9 BOJ G5 1\355\225\231\353\205\204.md" | 55 +++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 "zinnnn37/202512/9 BOJ G5 1\355\225\231\353\205\204.md" diff --git "a/zinnnn37/202512/9 BOJ G5 1\355\225\231\353\205\204.md" "b/zinnnn37/202512/9 BOJ G5 1\355\225\231\353\205\204.md" new file mode 100644 index 00000000..bc68c672 --- /dev/null +++ "b/zinnnn37/202512/9 BOJ G5 1\355\225\231\353\205\204.md" @@ -0,0 +1,55 @@ +```java +import java.io.*; +import java.util.StringTokenizer; + +public class Main { + + private static final BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + private static final BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out)); + private static StringTokenizer st; + + private static int N; + private static int[] nums; + private static long[][] dp; + + public static void main(String[] args) throws IOException { + init(); + sol(); + } + + private static void init() throws IOException { + N = Integer.parseInt(br.readLine()); + + nums = new int[N]; + st = new StringTokenizer(br.readLine()); + for (int i = 0; i < N; i++) { + nums[i] = Integer.parseInt(st.nextToken()); + } + dp = new long[N][21]; + dp[0][nums[0]] = 1; + } + + private static void sol() throws IOException { + for (int i = 1; i < N - 1; i++) { + for (int prev = 0; prev <= 20; prev++) { + if (dp[i - 1][prev] == 0) continue; + + int sum = prev + nums[i]; + int gap = prev - nums[i]; + + if (sum <= 20) { + dp[i][sum] += dp[i - 1][prev]; + } + if (gap >= 0) { + dp[i][gap] += dp[i - 1][prev]; + } + } + } + bw.write(dp[N - 2][nums[N - 1]] + ""); + bw.flush(); + bw.close(); + br.close(); + } + +} +``` \ No newline at end of file