Statistics TASK_051

#include<stdio.h>
#include<algorithm>
using namespace std;


int main()
{
    int n;
    scanf("%d",&n);
    int arr[n];
    int count[1010]; for(int i=0;i<1010;i++)count[i] = 0;
    double sum = 0;
    double mean,med,mode;
    int max = -1,maxi;
    for(int i=0;i<n;i++){
        scanf("%d",&arr[i]);
        sum += (double)arr[i];

    }
    mean = sum/(double)n;

    sort(arr,arr+n);
    for(int i=0;i<n;i++){
        count[arr[i]]++;
        if(count[arr[i]] >= max){
            max = count[arr[i]];
            maxi = arr[i];
        }
    }

    if(n%2==0){
        med = ((double)arr[(n/2)-1]+(double)arr[(n/2)])/2;
    }else{
        med = (double)arr[(n/2)];
    }
    mode = (double)maxi;
    printf("%.1lf\n%.1lf\n%.1lf",mean,med,mode);
}