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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n, ab = 0;
    string s, t;
    cin >> n >> s >> t;
    for(int i = 0; i < n; i++){
        if(s[i] > t[i]){
            cout << "No\n";
            return 0;
        }
        if(s[i] == t[i]) continue;
        if(t[i] == 'C'){
            if(ab == 0){
                cout << "No\n";
                return 0;
            }
            if(s[i] == 'B') ab--;
        }else{
            ab++;
        }
    }
    cout << (ab == 0 ? "Yes" : "No") << '\n';
}