【codeforces】631A Interview

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

int n;
vector<int> a;
vector<int> b;

int main(){
    while(~scanf("%d", &n)){
        a.clear();
        b.clear();
        for(int i = 0; i < n; i++){
            int temp;
            scanf("%d", &temp);
            a.push_back(temp);
        }
        for(int i = 0; i < n; i++){
            int temp;
            scanf("%d", &temp);
            b.push_back(temp);
        }
        vector<int>::iterator it;
        int ans1 = 0;
        for(it = a.begin(); it != a.end(); it++){
            ans1 = ans1|(*it);
        }
        int ans2 = 0;
        for(it = b.begin(); it != b.end(); it++){
            ans2 = ans2|(*it);
        }
        int ans = ans1+ans2;
        printf("%d\n", ans);
    }
    return 0;
}