/*****************************************
备注：
******************************************/
#include <queue>
#include <math.h>
#include <stack>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string.h>
#include <algorithm>
using namespace std;
#define LL long long
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
int main()
{
	double n;
	double a[N];
	cin >> n;
	double sum = 0;
	for(int i = 0 ; i < n ; i++ )
	{
		cin >> a[i];
		sum += a[i];
	}
	double s = sum / n;
	int cnt = 0;
	for(int i = 0 ; i < n ; i++)
	{
		if(a[i] < s)
			cnt ++;
	}
	cout << cnt << endl;
	return 0;
}

这道题可以用数组写，代码如下:

#include <iostream>//头文件
using namespace std;//命名空间
int n,a[110],ans;//ans为低于平均分人数
double line;//line为平均分
int main()//主函数
{
	cin >> n;
	for(int i = 1;i <= n;i++)
	{
		cin >> a[i];
		line += a[i];
	}
	line /= n;//求平均数
	for(int i = 1;i <= n;i++)
	{
		if(a[i] < line)//筛查
		{
			ans++;
		}
	}
	cout << ans;
	return 0;
}

看懂了吗，不懂发评论区

#include using namespace std; const long long N=1e7; int n,ping=0,num=0; double k; int a[N]; int main(){ cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; ping+=a[i]; } if(ping%n==0){ k=ping/n; } else k=ping/n+1; for(int i=1;i<=n;i++){ if(a[i]<k){ num++; } } cout<<num; return 0; }

#include #include #include #include #include<bits/stdc++.h>//memset(a,0x3f,sizeof(a)); using namespace std;//cout<<fixed<<setprecision() int a[10005]; int main() { int s,t=0; double y=0; cin>>s; for(int i=0;i<=s-1;i++) { cin>>a[i]; } for(int i=0;i<=s-1;i++) { y+=a[i]; } y/=s; for(int i=0;i<=s-1;i++) { if(y>a[i]) { t++; } } cout<<t; return 0; }

#include <bits/stdc++.h>
using namespace std;
const int N=1e4+10;
const int INF=0x3f3f3f3f;
int a[N];
double sum;
int ans,n;
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
		sum+=a[i];
	}
	sum/=n;
	for(int i=1;i<=n;i++)
	{
		if(a[i]<sum)
		{
			ans++;
		}
	}
	cout<<ans;
	return 0;
}

#include<iostream>
//#include<iomanip>
//#include<math.h>
using namespace std;
const int N = 1e5 + 10;//1*10^5 + 10
const int INF = 0x3f3f3f3f;
double n , a[N] , sum , avg , ans;

int main(){
    cin >> n ;
    
    for(int i = 1;i <= n;i++){
        cin >> a[i];
        sum += a[i];
        }
        
	avg = sum / n; 
	
	for(int i = 1;i <= n;i++){
        if(a[i] < avg){
        	ans ++;
		}
        }  
        
    //if(i == 1){
    //    pass
    //}else{
    //    pass
    //}

    cout << ans ;
    return 0;
}

using namespace std;
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
int main(){
	double n;
	double a[N];
	cin >> n;
	double sum = 0;
	for(int i = 0 ; i < n ; i++ ){
		cin >> a[i];
		sum += a[i];
	}
	double s = sum / n;
	int cnt = 0;
	for(int i = 0 ; i < n ; i++){
		if(a[i] < s)
			cnt ++;
	}
	cout << cnt << endl;
	return 0;
}

#include

#include

#include

#include

#include

#include

#include

#include

using namespace std;

int main()

{

double s=0,x;

int b=0,n;

cin >> n;

double a[n+1];

for(int i=1;i<=n;i++)

{

cin >> a[i];

s += a[i];

}

x = s / n;

for(int i=n;i>=1;i--)

{

if(a[i] < x)b++;

}

cout << b;

return 0;

}

#include<bits/stdc++.h>
using namespace std;
const int N=1e5+10;
int main(){
	int m,l,n,a[N];
	cin>>n;
	for(int i=1;i<=n;i++)
		cin>>a[i];
	int d=0;
	for(int i=1;i<=n;i++)
		d=d+a[i];
	
		
	m=d/n;
	for(int i=1;i<=n;i++){
		if(a[i]<=m)
			l++;
	} 
	cout<<l;
}