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/挑战程序设计竞赛/2.6.2.1.cpp
+++ b/history_source/挑战程序设计竞赛/2.6.2.1.cpp
@ -0,0 +1,13 @@
+#include<cstdio>
+int n;
+bool isp(int n)
+{
+	for(int i=2;i*i<=n;i++) if(n%i==0) return 0;
+	return n>1;
+}
+int main()
+{
+	scanf("%d",&n);
+	printf("%s\n",isp(n)?"Yes":"No");
+	return 0;
+}