Coder-Strike 2014 - Finals (online edition, Div. 2) A. Pasha and Hamsters

水题

#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

int main(){
    int n,a,b;
    cin >> n >>a >> b;
    vector<int> apple(n+,);
    int k;
    for(int i =  ;  i < a;  ++ i) {
        cin>>k;
        apple[k] = ;
    }
    for(int i =  ; i < b; ++ i) {
        cin >> k;
        if(apple[k]==) apple[k] = ;
    }
    for(int i =  ; i < n+; ++ i){
        if( i == ) cout<< apple[i];
        else  cout<<" "<<apple[i];
    }
    cout<<endl;
}