delete pics to save space

history_source/ccf 入门篇/U3/3.4.3.cpp

@@ -0,0 +1,40 @@
+#include<iostream>
+#include<cmath>
+using namespace std;
+int y,m; 
+bool p()
+{
+	if(y%400==0) return 1;
+	if(y%100==0) return 0;
+	if(y%4==0) return 1;
+	return 0;
+}
+
+int main()
+{
+	
+	while(true)
+	{
+		cin>>y>>m;
+		switch(m)
+		{
+			case 1:cout<<"31days"<<endl;break;
+			case 2:{
+				if(p())cout<<"29days"<<endl;
+				else cout<<"28days"<<endl;
+				break;
+			}
+			case 3:cout<<"31days"<<endl;break;
+			case 4:cout<<"30days"<<endl;break;
+			case 5:cout<<"31days"<<endl;break;
+			case 6:cout<<"30days"<<endl;break;
+			case 7:cout<<"31days"<<endl;break;
+			case 8:cout<<"31days"<<endl;break;
+			case 9:cout<<"30days"<<endl;break;
+			case 10:cout<<"31days"<<endl;break;
+			case 11:cout<<"30days"<<endl;break;
+			case 12:cout<<"31days"<<endl;break;
+		}
+		
+	}
+}