From 2d69fd0443f99e9dcd948bddeb9a5a63b4e67073 Mon Sep 17 00:00:00 2001 From: Ukj0ng <90972240+Ukj0ng@users.noreply.github.com> Date: Fri, 12 Dec 2025 11:21:41 +0900 Subject: [PATCH] =?UTF-8?q?[20251212]=20BOJ=20/=20G3=20/=20=EB=91=90=20?= =?UTF-8?q?=EB=B0=B0=EC=97=B4=EC=9D=98=20=ED=95=A9=20/=20=ED=95=9C?= =?UTF-8?q?=EC=A2=85=EC=9A=B1?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- ...0\354\227\264\354\235\230 \355\225\251.md" | 102 ++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 "Ukj0ng/202512/12 BOJ G3 \353\221\220 \353\260\260\354\227\264\354\235\230 \355\225\251.md" diff --git "a/Ukj0ng/202512/12 BOJ G3 \353\221\220 \353\260\260\354\227\264\354\235\230 \355\225\251.md" "b/Ukj0ng/202512/12 BOJ G3 \353\221\220 \353\260\260\354\227\264\354\235\230 \355\225\251.md" new file mode 100644 index 00000000..582a88b5 --- /dev/null +++ "b/Ukj0ng/202512/12 BOJ G3 \353\221\220 \353\260\260\354\227\264\354\235\230 \355\225\251.md" @@ -0,0 +1,102 @@ +``` +import java.io.*; +import java.util.*; + +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 int[] A, B; + private static List sumA, sumB; + private static int T, n, m; + + public static void main(String[] args) throws IOException { + init(); + long answer = 0; + + for (int i = 0; i < sumA.size(); i++) { + int left = lowerBound(sumA.get(i)); + int right = upperBound(sumA.get(i)); + + answer += right-left; + } + + bw.write(answer + "\n"); + bw.flush(); + bw.close(); + br.close(); + } + + private static void init() throws IOException { + T = Integer.parseInt(br.readLine()); + n = Integer.parseInt(br.readLine()); + A = new int[n]; + StringTokenizer st = new StringTokenizer(br.readLine()); + for (int i = 0; i < n; i++) { + A[i] = Integer.parseInt(st.nextToken()); + } + + m = Integer.parseInt(br.readLine()); + B = new int[m]; + st = new StringTokenizer(br.readLine()); + for (int i = 0; i < m; i++) { + B[i] = Integer.parseInt(st.nextToken()); + } + + sumA = new ArrayList<>(); + for (int i = 0; i < n; i++) { + long sum = 0; + + for (int j = i; j < n; j++) { + sum += A[j]; + sumA.add(sum); + } + } + + sumB = new ArrayList<>(); + for (int i = 0; i < m; i++) { + long sum = 0; + + for (int j = i; j < m; j++) { + sum += B[j]; + sumB.add(sum); + } + } + + sumB.sort((o1, o2) -> Long.compare(o1, o2)); + } + + private static int lowerBound(long a) { + int left = 0; + int right = sumB.size(); + + while (left < right) { + int mid = left + (right - left)/2; + + if (sumB.get(mid)+a >= T) { + right = mid; + } else { + left = mid+1; + } + } + + return right; + } + + private static int upperBound(long a) { + int left = 0; + int right = sumB.size(); + + while (left < right) { + int mid = left + (right - left)/2; + + if (sumB.get(mid)+a > T) { + right = mid; + } else { + left = mid+1; + } + } + + return right; + } +} +```