更新了许多

小码君的自创数列.cpp

@@ -0,0 +1,30 @@
+#include <algorithm>
+#include <iostream>
+#include <iomanip>
+#include <cstring>
+#include <cstdio>
+#include <stack>
+#include <ctime>
+#include <cmath>
+#include <queue>
+typedef long long l;
+typedef double d;
+using namespace std;
+int a,b,c,e;
+int f(int n){
+	if(n==1){
+		return a;
+	}
+	if(n==2){
+		return b;
+	}
+	if(n==3){
+		return c;
+	}
+	return f(n-1)+f(n-2)+f(n-3);
+}
+int main(){
+	cin >>a>>b>>c>>e;
+	cout <<f(e);
+	return 0;
+}