151915

Run ID	Author	Problem	Lang	Verdict	Score	Time	Memory	Code Length	Submit Time
151915	陈家宝	开关灯2	C++	Accepted	100	0 MS	248 KB	143	2024-06-20 13:09:00

#include<bits/stdc++.h> using namespace std; int main(){ int n,cnt=0; cin>>n; for(int i=1;i*i<=n;i++)cnt++; cout<<cnt; return 0; }