Trigger the CI check.

Author: krahets

codes/cpp/chapter_dynamic_programming/climbing_stairs_constraint_dp.cpp

@@ -7,7 +7,7 @@
 #include "../utils/common.hpp"
 
 /* 带约束爬楼梯：动态规划 */
-int climbingStairsConstraintDP(int n) {
+int climbingStairsConstraintDP(int n) { 
     if (n == 1 || n == 2) {
         return 1;
     }

codes/java/chapter_backtracking/n_queens.java

@@ -8,7 +8,7 @@
 
 import java.util.*;
 
-public class n_queens {
+public class n_queens { 
     /* 回溯算法：n 皇后 */
     public static void backtrack(int row, int n, List<List<String>> state, List<List<List<String>>> res,
             boolean[] cols, boolean[] diags1, boolean[] diags2) {

codes/python/chapter_tree/binary_tree.py

@@ -12,7 +12,7 @@
 
 
 """Driver Code"""
-if __name__ == "__main__":
+if __name__ == "__main__": 
     # 初始化二叉树
     # 初始化节点
     n1 = TreeNode(val=1)