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/1.4.4.6.cpp
+++ b/history_source/信息学奥赛一本通/1.4.4.6.cpp
@ -0,0 +1,17 @@
+#include<iostream>
+#include<sstream>
+using namespace std;
+int main()
+{
+	string a;
+	int l,r;
+	stringstream li;
+	cin>>l>>r;
+	for(int i=l;i<=r;i++) li<<i;
+	li>>a;
+	int ans=0;
+	for(int i=0;i<a.size();i++) if(a[i]=='2') ans++;
+	cout<<ans<<endl;
+	return 0;
+}
+