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#include<iostream>
#include<cmath>
#include<vector>
#include<stdio.h>
using namespace std;
int main() {
int n;
cin >> n;
vector<int> data;
for (size_t i = 0; i < n; i++)
{
int t;
cin >> t;
data.push_back(t);
}
double aver = 0.0f;
double sum = 0.0f;
double re =0.0f;
//算平均值
for (size_t i = 0; i < data.size(); i++)
{
sum += data[i];
}
aver = sum /data.size();
//算分母
double sum1 = 0.0f;
double sum2 = 0.0f;
for (size_t i = 0; i < data.size(); i++)
&...
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手算的结果出问题了,已修正,这个代码没问题的