백준 1546번 평균

1546.cpp

#include <iostream>
using namespace std;

int main(void){
    const int SIZE = 1000;
    int num = 0, max = 0;
    double sum = 0;
    int arr[SIZE] = {0,};
    
    cin >> num;
    
    for(int i = 0; i < num; i++){
        cin >> arr[i];
    }
    
    for(int j = 0; j < num; j++){
        if(arr[j] > max) max = arr[j];
    }
    
    for(int k = 0; k < num; k++){
        sum += ((double)arr[k]/max)*100;
    }
    
    printf("%.2f\n", sum/num);
    
    return 0;
}