C++ 代码

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

const int N = 1000001;
int a[N];

int judge(int x)
{
    if(a[x]!=x)
        a[x] = judge(a[x]);
    return a[x];
}

int main()
{
    int n,x;
    cin >> n;
    for(int i=1;i<=N;i++)
        a[i] = i;
    for(int i=1;i<=n;i++)
    {
        cin >> x;
        x = judge(x);
        cout << x << " ";
        a[x] = x + 1;
    }

    return 0;
}