Create 백준-2167-2차원배열의합.java

Author: rhkr8521

2025-08-14/곽태근/백준-2167-2차원배열의합.java

@@ -0,0 +1,49 @@
+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));
+        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
+
+        StringTokenizer st = new StringTokenizer(br.readLine());
+
+        int N = Integer.parseInt(st.nextToken());
+        int M = Integer.parseInt(st.nextToken());
+
+        int[][] oldarr = new int[N+1][M+1];
+        int[][] newarr = new int[N+1][M+1];
+
+        for(int i = 1; i<N+1; i++){
+            st = new StringTokenizer(br.readLine());
+            for(int p = 1; p<M+1; p++) {
+                oldarr[i][p] = Integer.parseInt(st.nextToken());
+            }
+        }
+
+        for(int m = 1; m<N+1; m++){
+            for(int l = 1; l<M+1; l++){
+                newarr[m][l] = newarr[m-1][l] + newarr[m][l-1] - newarr[m-1][l-1] + oldarr[m][l];
+            }
+        }
+
+        int K = Integer.parseInt(br.readLine());
+
+        for(int u = 0; u<K; u++){
+            st = new StringTokenizer(br.readLine());
+
+            int x1 = Integer.parseInt(st.nextToken());
+            int y1 = Integer.parseInt(st.nextToken());
+            int x2 = Integer.parseInt(st.nextToken());
+            int y2 = Integer.parseInt(st.nextToken());
+
+            int result = newarr[x2][y2] - newarr[x1-1][y2] - newarr[x2][y1-1] + newarr[x1-1][y1-1];
+
+            bw.write(result+"");
+            bw.newLine();
+            bw.flush();
+        }
+    }
+}