Nick801102 @ 2022-06-01 21:09:59

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,k,a1=0,a2=0,b1=0,b2=0,s=0;
    double a3,b3;
    for(int i=k;i<=n;i+=k)
    {
        a1+=n;
        a2++;
    }
    a3=a1/a2;
    printf("%0.1f",a3);
    cout<<" ";
    for(int i=1;i<=n;i++)s+=i;
    b1=s-a1;
    b2=n-a2;
    b3=b1/b2;
    printf("%0.1f",b3);
    return 0;
}

by ajahjahah @ 2022-06-01 21:11:34

输入呢？

先测样例再提交

by tangrunxi @ 2022-06-01 21:14:43

@Nick801102 您是不是忘记输入了

by Nick801102 @ 2022-06-06 19:36:42

SB的我~~~~~~~~

但真的大无语~~~第2个到第4个全WA...... 艹TM

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,k,a1=0,a2=0,b1=0,b2=0,s=0;
    double a3,b3;
    cin>>n>>k;
    for(int i=k;i<=n;i+=k)
    {
        a1+=i;
        a2++;
    }
    a3=a1/a2;
    printf("%0.1f",a3);
    cout<<" ";
    for(int i=1;i<=n;i++)s+=i;
    b1=s-a1;
    b2=n-a2;
    b3=b1/b2;
    printf("%0.1f",b3);
    return 0;
}

啊———————————————————

by mayangsu1106 @ 2022-08-19 18:16:44

为什么不直接统计两类的总数和个数呢

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,k;
    double sum1=0,sum2=0,t1=0,t2=0;
    cin>>n>>k;
    for(int i=1;i<=n;i++){
        if(i%k==0){
            sum1+=i;
            t1++;
        }else{
            sum2+=i;
            t2++;
        }
    }
    printf("%0.1f%.1lf",sum1/t1,sum2/t2);
    return 0;
}

by mayangsu1106 @ 2022-08-19 18:17:49

AC代码

by Nick801102 @ 2022-08-20 09:38:21

谢谢