DOICHO C++

#include <bits/stdc++.h>
using namespace std;

int a[1000005];
int n;
void enter()
{
    cin>>n;
    for(int i=1;i<=n;i++) 
        cin>>a[i];

}
int tim_min()
{
    mi=1;
    for(int i=2;i<=n;i++)
        if (a[i]<=a[mi]) 
            mi=i;
    return mi;
}
int tim_max()
{
    int ma=1;
    for(int i=2;i<=n;i++)
       if (a[i]>a[ma]) 
        ma=i;
    return ma;
}
void doi_cho(int x, int y)
{
    int t = a[x];
    a[x] = a[y];
    a[y]= t;
}
void xuat_mang()
{
    for (int i=1;i<=n;i++)
        cout<<a[i]<<" ";
}
void solve()
{
    int minn = tim_min();
    int maxx = tim_max();
    doi_cho(minn,maxx);    
}
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    freopen("doicho.inp","r",stdin);
    freopen("doicho.out","w",stdout);
    enter();
    solve();
    xuat_mang();
}