diff --git a/problems/0070.爬楼梯完全背包版本.md b/problems/0070.爬楼梯完全背包版本.md
index 93a336ab..f8337cc0 100644
--- a/problems/0070.爬楼梯完全背包版本.md
+++ b/problems/0070.爬楼梯完全背包版本.md
@@ -143,9 +143,9 @@ int main() {
 import java.util.Scanner;
 class climbStairs{
     public static void main(String [] args){
-        Scanner sc=new Scanner(System.in);
+        Scanner sc = new Scanner(System.in);
         int m, n;
-        while(sc.hasNextInt()){
+        while (sc.hasNextInt()) {
             // 从键盘输入参数，中间用空格隔开
             n = sc.nextInt();
             m = sc.nextInt();