看看自己的写法和别人简练写法的差距

#include<iostream>
#include<vector>
#include<cmath>
#include<algorithm>
using namespace std;
bool cmp(double a, double b) {
    return a < b;
}
int main() {
    int n;
    vector<double> rest;
    double length, ans = 0.0;
    scanf("%d", &n);
    while (n--) {
        scanf("%lf", &length);
        rest.push_back(length);
    }
    sort(rest.begin(), rest.end(), cmp);
    double a = *(rest.begin());
    double b = *(rest.begin() + 1);
    ans = (a + b) / 2;
    for (int i = 2; i < rest.size(); i++) {
        double c = *(rest.begin() + i);
        ans = (ans + c) / 2;
    }
    cout<<floor(ans)<<endl;
    return 0;
}

#include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
int main() {
    int n;
    scanf("%d", &n);
    vector<int> v(n);
    for (int i = 0; i < n; i++)
        scanf("%d", &v[i]);
    sort(v.begin(), v.end());
    int result = v[0];
    for (int i = 1; i < n; i++)
        result = (result + v[i]) / 2;
    printf("%d", result);
    return 0;
}