delete pics to save space

2023-08-03 09:22:52 +08:00
commit de60cd6ed4
1334 changed files with 66221 additions and 0 deletions
--- a/history_source/信息学奥赛一本通/2.3.9.cpp
+++ b/history_source/信息学奥赛一本通/2.3.9.cpp
@ -0,0 +1,14 @@
+#include<cstdio>
+using namespace std;
+int f(int n,int k)
+{
+	if(n>1) return (k-1)*f(n-1,2)+f(n-1,3);
+	return k;
+}
+int main()
+{
+	int n;
+	scanf("%d",&n);
+	printf("%d\n",f(n,3));
+	return 0;
+}