CCF 201809-1 卖菜

#include <iostream>
#include <bits/stdc++.h>
#include <string>

using namespace std;

int main()
{
    int n;
    cin>>n;
    vector<int> a;
    for(int i=0;i<n;i++)
    {
        int temp;
        cin>>temp;
        a.push_back(temp);
    }
    int *b = (int *)malloc(sizeof(int)*n);
    for(int i=0;i<n;i++)
    {
        if(i==0)
            b[i]=(int)((a[i+1]+a[i])*1.0/2);
        else if(i==n-1)
            b[i]=(int)((a[i-1]+a[i])*1.0/2);
        else
            b[i]=(int)((a[i-1]+a[i+1]+a[i])*1.0/3);
    }
    for(int i=0;i<n;i++)
    {
        if(i==0)
            cout<<b[i];
        else
            cout<<" "<<b[i];
    }
    cout<<endl;
}