BOJ_1890 : 점프

Author: spring0913

week6/BOJ_1890(점프).java

@@ -0,0 +1,34 @@
+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));
+        int N = Integer.parseInt(br.readLine());
+        int[][] board = new int[N][N];
+        for (int i = 0; i < N; i++) {
+            StringTokenizer st = new StringTokenizer(br.readLine());
+            for (int j = 0; j < N; j++) {
+                board[i][j] = Integer.parseInt(st.nextToken());
+            }
+        }
+        long[][] d = new long[N][N];
+        d[0][0] = 1;
+        for (int i = 0; i < N; i++) {
+            for (int j = 0; j < N; j++) {
+                int jump = board[i][j];
+                if (jump == 0) {
+                    continue;
+                }
+                if (j + jump < N) {
+                    d[i][j + jump] += d[i][j];
+                }
+                if (i + jump < N) {
+                    d[i + jump][j] += d[i][j];
+                }
+            }
+        }
+        System.out.println(d[N - 1][N - 1]);
+    }
+}