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]]); + } +} +```