#include <stdio.h>
#define MAX 100
int seiseki[MAX];
int size = 0;
int record(int a){
    seiseki[size] = a;
    size++;
    return 0;}
double average(){
    int i, sum = 0;
    double average;
    for(i = 0; i < size; i++){
        sum += seiseki[i];}
    average = (double)sum / size;
    return average;}
double cond_average(int a,int b){
	int sum=0,t,count=0;
	double average;
	for(t=0; t<size; t++){
	if(a<=seiseki[t]&&seiseki[t]<=b)
	{sum=sum+seiseki[t];
	count++;}}
	if(count==0){
	return 0.0;}
	average=(double)sum/count;
	return average;}
int main(){
    int score, num, i;
    scanf("%d", &num);
    printf("num=%d\n", num);
    for(i = 0; i < num; i++){
        scanf("%d", &score);
        printf("score=%d\n", score);
        record(score);}
    printf("Ave=%lf\n", average());
	printf("main関数の中では,60点以上100点以下の学生の平均点は%lf\n",cond_average(60,100));
    return 0;
}