[20251129] BOJ / G4 / 로또 / 이인희

Author: LiiNi-coder

LiiNi-coder/202511/29 BOJ 로또.md

@@ -0,0 +1,39 @@
+```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 = new StringTokenizer(br.readLine());
+        int T = Integer.parseInt(st.nextToken());
+        while(T-- > 0){
+            st = new StringTokenizer(br.readLine());
+            int n = Integer.parseInt(st.nextToken());
+            int m = Integer.parseInt(st.nextToken());
+            long[][] dp = new long[n + 1][m + 1];
+            for(int j = 1; j <= m; j++){
+                dp[1][j] = 1;
+            }
+
+            for(int k = 2; k <= n; k++){
+                for(int j = 1; j <= m; j++){
+                    long sum = 0;
+                    for(int prev = 1; prev * 2 <= j; prev++){
+                        sum += dp[k-1][prev];
+                    }
+                    dp[k][j] = sum;
+                }
+            }
+            long answer = 0;
+            
+            
+            for(int j = 1; j <= m; j++){
+                answer += dp[n][j];
+            }
+            System.out.println(answer);
+        }
+    }
+}
+
+```