Akira @ 2017-07-22 18:37:41
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>
using namespace std;
int main()
{
//freopen("in.txt","r",stdin);
//freopen("out.txt","w",stdout);
double k,s=0,i;//一定要double，float会炸
cin>>k;
for (i = 1;s<=k; i++)
{
s+=1/i;
}
cout<<i-1;
return 0;
}
by 编程的弱子 @ 2017-07-23 16:38:31
#include<iostream>
using namespace std;
int main()
{double s,i;
int n;
cin>>n;
s=0;
i=1.0;
do
{s=s+1.0/i;
i++;
}while (s<=n);
i--;
cout<<i;
return 0;
}
一个简单的do while循环，最后记得i--就行by codesonic @ 2017-07-27 10:01:50
OI比赛一般都是用double的。。。我这次还开到long double
by Tsukimaru @ 2017-07-27 16:29:38
原来您们都用浮点数做....我整数变量简化弄了一堆代码0A0