diff --git a/README.md b/README.md
index 88ada7b..2da9a98 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# bdfu_2024_summer
+# bdfz_2024_summer
 # 题目经验总结
 ## Day2
 ### [U111091 区间2段覆盖](./day2/U111091/U111091.md)
@@ -65,6 +65,9 @@ ll ksm(ll a,ll b,ll M){
     return a * _ksm(b, M - 2,M) % M;
 }
 ```
+### 比赛疑问
+#### [公平的竞争（fair）](./day5/statement.pdf)
+##### $x=2+ {{x}\over{4}}$  => $x = {{8} \over 3}$是怎么得出来的
 
 # 排序
 ## 稳定性
diff --git a/day5/good/good.cpp b/day5/good/good.cpp
index 20b6cc3..c77202d 100644
--- a/day5/good/good.cpp
+++ b/day5/good/good.cpp
@@ -2,8 +2,12 @@
 using namespace std;
 #define ll long long
 
-
+const int MAX_NK=5e3+5;
+int n,k;
 
 int main(){
-
+    cin>>n>>k;
+    for(int i=1;i<=n;i++){
+        
+    }
 }
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