diff --git a/未命名1.cpp b/未命名1.cpp
new file mode 100644
index 0000000..cf5d0a1
--- /dev/null
+++ b/未命名1.cpp
@@ -0,0 +1,20 @@
+#include<iostream>
+using namespace std;
+int main() {
+	int a;
+	double s;i
+	f(a<=10);{
+		s=0.8*a+0.2;
+		cout<<setprecision(2)<<fixed<<s<<endl;
+	}else if(a<=30){
+				s=0.8*a+0.2;
+		cout<<setprecision(2)<<fixed<<s<<endl;
+	}else if(a<=30){
+				s=0.8*a+0.2;
+		cout<<setprecision(2)<<fixed<<s<<endl;
+	}
+	
+	cin>>a;
+	i
+	return 0;
+}
diff --git a/未命名3.cpp b/未命名3.cpp
new file mode 100644
index 0000000..e36fef8
--- /dev/null
+++ b/未命名3.cpp
@@ -0,0 +1,11 @@
+#include<iostream>
+using namespace std;
+int main() {
+	int a; 
+	cin>>a;
+	if (a%4==0&a&100!=0||a%400==0){
+	if{a=}	
+	}
+	return 0;
+}
+
diff --git a/等差数列.cpp b/等差数列.cpp
new file mode 100644
index 0000000..10a9f3d
--- /dev/null
+++ b/等差数列.cpp
@@ -0,0 +1,8 @@
+#include<iostream>
+using namespace std;
+int main() {
+	int a,b,c;
+	cin>>a>>b>>c;
+	cout<<(b-a)*(c-1)+a;
+	return 0;
+}
diff --git a/等差数列.exe b/等差数列.exe
new file mode 100644
index 0000000..b64dd5a
Binary files /dev/null and b/等差数列.exe differ
diff --git a/计算徽章数量.cpp b/计算徽章数量.cpp
new file mode 100644
index 0000000..a3cc051
--- /dev/null
+++ b/计算徽章数量.cpp
@@ -0,0 +1,8 @@
+#include<iostream>
+using namespace std;
+int main() {
+	int a, b;
+	cin>>a>>b;
+	cout<<(a*10+b)/21; 
+	return 0;
+}
diff --git a/计算徽章数量.exe b/计算徽章数量.exe
new file mode 100644
index 0000000..04a0852
Binary files /dev/null and b/计算徽章数量.exe differ
diff --git a/闰年判断.cpp b/闰年判断.cpp
new file mode 100644
index 0000000..d3d1d69
--- /dev/null
+++ b/闰年判断.cpp
@@ -0,0 +1,11 @@
+#include<iostream>
+using namespace std;
+int main() {
+	int a; 
+	cin>>a;
+	if (a%4==0&a&100!=0||a%400==0){
+	cout<<"�����ꡣ";}
+	else {cout<< "��������";}
+	return 0;
+}
+
diff --git a/闰年判断.exe b/闰年判断.exe
new file mode 100644
index 0000000..87abdad
Binary files /dev/null and b/闰年判断.exe differ