归类了 OJ，整理了一下

XSM OJ 重庆小码王集团OJ/恺撒加密术.cpp

@@ -0,0 +1,26 @@
+#include <iostream>
+#include <iomanip>
+#include <cstring>
+#include <cstdio>
+#include <ctime>
+#include <cmath>
+typedef long long l;
+typedef double d;
+typedef char c;
+using namespace std;
+int main(){
+	c a[100000];
+	l b;
+	cin >>a;
+	cin >>b;
+	for(int i=0;i<strlen(a);i++){
+		if((a[i]>='a' && a[i]<='z'-b) || (a[i]>='A' && a[i]<='Z'-b)){
+			a[i]+=b;
+		}
+		else if((a[i]>='z'-b+1 && a[i]<='z') || (a[i]>='Z'-b+1 && a[i]<='Z')){
+			a[i]=a[i]-26+b;
+		}
+	}
+	cout <<a;
+	return 0;
+}