A35622.交换字符

#include<iostream>
using namespace std;
int main(){
    int n;
    char s1[1000],s2[1000];
    cin>>n>>s1>>s2;
    for(int i=0;i<n;i++){
        if(i%2) cout<<s1[i];
        else cout<<s2[i];
    }
    return 0;
}