【求助】c++旗手问题

#include "pch.h"
#include <iostream>
using namespace std;
int main()
{
    int num;//队伍人数
    cin >> num;
    if (num < 1 || num>10000)
    {
        cout << "Impossible number of tourist!";
        exit(1);
    }//检验队伍人数范围
    cout << "ok1" << endl;//1
    int *p = new int[num];//建立身高数组
    for (int i = 0; i < num; i++)
    {
        cin >> *(p + i);
    }
    cout << "ok2" << endl;//2
    int Highest = *p;
    int Highestnum = 0;
    for (int i = 0; i < num; i++)//寻找最高
    {
        bool IsHighest = true;//假定某人最高
        Highest = *(p + i);
        for (int j = 0; j < num; j++)
        {
            if (Highest < *(p + j))
            {
                IsHighest = false;
                break;
            }//如果身高小于任何一个人，不是最高
        }
        if (IsHighest)
        {
            Highestnum = i;
            break;
        }//如果不小于任何一个人，是最高
    }
    cout << Highestnum << endl;//3
    int temp;//交换第一个人和最高的人的顺序
    temp = *p; *p = *(p + Highestnum); *(p + Highestnum) = temp;
    for (int i = 0; i < num; i++)
        cout << *(p + i) << ' ';//输出
}

#include <iostream>
#include <iterator>
#include <algorithm>
#include <vector>
using namespace std;

int main( void )
{
    // 输入 n
    size_t n;
    cin >> n;

    // 输入 n 个身高
    std::vector<unsigned> heights( n );
    copy_n( istream_iterator<decltype(heights)::value_type>(cin), n, begin(heights) );

    // 找到第一个最高者位置，并与首位游客交换
    auto itor = max_element( begin(heights), end(heights) );
    iter_swap( itor, begin(heights) );

    // 输出所有游客身高
    copy( begin(heights), end(heights), ostream_iterator<decltype(heights)::value_type>(cout," ") );
}