80721

Run ID	Author	Problem	Lang	Verdict	Time	Memory	Code Length	Submit Time
80721	sh25_zhuwy	统计数字	C++	Accepted	0 MS	244 KB	154	2026-01-04 15:29:00

#include<bits/stdc++.h> using namespace std; int main() { int n; cin>>n; int cnt=0; for(int i=2;i<=n;i+=10) cnt++; cout<<cnt; return 0; }