kjjxv

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

int main() {
 int n;
    cin>>n;
    string a;
    cin>>a;
    for(int i=0;i<=n;i++){
        if(a[i]>='A'&&a[i]<='Z') cout<<char(a[i]+32);
       if(a[i]>='a'&&a[i]<='z') cout<<char(a[i]-32);
        if(a[i]>='0'&&a[i]<='9') cout<<"*";
    }
    return 0;
}