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/1.4.1.23.cpp
+++ b/history_source/信息学奥赛一本通/1.4.1.23.cpp
@ -0,0 +1,10 @@
+#include<cstdio>
+using namespace std;
+int main()
+{
+	int n;
+	scanf("%d",&n);
+	printf("%d\n",n*(n+1)/2);
+	return 0;
+}
+