#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
void *safeMalloc(int n) {
    void *p = malloc(n);
    if (p == NULL) {
        printf("Error: malloc(%d) failed. Out of memory?n", n);
        exit(EXIT_FAILURE);
    }
    return p;
}

int main(int argc, char *argv[]) {
    int n,i;
    scanf("%d",&n);
    int* array=safeMalloc(n*sizeof(int));
    for(i=0;i<n;i++){
        int value;
        scanf("%d",&value);
        array[i]=value;
    }

    //mean
    double mean;
    double sum=0;
    for(i=0;i<n;i++){
        sum=sum+(double)array[i];
    }
    mean=sum/n;
    printf("mean: %.2fn",mean);

    //median

    float temp;
    int j;
    for(i=0;i<n;i++)
        for(j=i+1;j<n;j++){
            if(array[i]>array[j]){
                temp=array[j];
                array[j]=array[i];
                array[i]=temp;
            }
        }
    printf("median: %dn",array[n/2]);


     //mode

    int val=array[0],noOfRepetitions=1,valMax=array[0],maxRepetitions=1,possibleMax=1;

    for(i=1;i<n;i++){
        if(array[i]==val){
            noOfRepetitions++;
        }

        if(array[i]!=val){
            val=array[i];
            noOfRepetitions=1;
        }

        if(noOfRepetitions==possibleMax){
            maxRepetitions=1;
            continue;
        }

        if(noOfRepetitions>maxRepetitions){
            valMax=val;
            maxRepetitions=noOfRepetitions;
            possibleMax=maxRepetitions;
        }
    }

    if(maxRepetitions>1){
        printf("mode: %dn",valMax);
    }else{
        printf("mode: NONEn");
    }

    return 0;
}