#include<bits/stdc++.h>
using namespace std;
int sum[100010];
int main(){
    freopen("merge.in","r",stdin);
    freopen("merge.out","w",stdout);
    int a,b;
    cin >> a >> b;
    for(int i = 0;i < a + b;i ++){
        cin >> sum[i];
    }
    sort(sum ,sum + a + b);
    int hui = 123456789;
    for(int i = 0;i < a + b;i ++){
        if(hui == sum[i]) {
            continue;
        }
        cout << sum[i] << ' ';
        hui = sum[i];
        }
    return 0;
}

转载自鲁大师（2301026）