全部WA，但是答案没有问题

wsqgh @ 2022-12-26 14:55:35

#include<iostream>
 using namespace std;

 int main()
 {
    int k,n;
    double i=1,S=0;
    cin>>k;
    while(S<k)
    {
        S+=1/i;
        i++;
     }
    cout<<i<<endl; 
    return 0;
  } 

by ZQIN_P @ 2022-12-26 14:58:44

@wsqgh 使得 S_n>k。

by ZQIN_P @ 2022-12-26 15:02:04

把while(S<k)改成while(S<=k)

by wsqgh @ 2022-12-26 15:04:07

@planet_over_for_ever 答案出现了问题，是不是我下面还要减一

by wsqgh @ 2022-12-26 15:05:52

@planet_over_for_ever 我已经通过了

by ZQIN_P @ 2022-12-26 15:07:53

@wsqgh AC了就行,其实不需要-1的

by dm72 @ 2023-02-12 19:52:44

#include<cstdio>
int main() {
    int k,n=0;
    scanf("%d",&k);
    for(double Sn=0;Sn<=k;++n,Sn+=1.0/n);
    printf("%d",n);
    return 0;
}

应该是吧