#include <bitset>
#include <string>
#include <iostream>
 
int main() {
    const std::bitset<8> b1 { "BABBABBA", 8, 'A', 'B' };
    std::cout << b1 << std::endl;
    
    const std::string s { "YXYYXYYX" };
    const std::bitset<8> b2 { s, 0, 8, 'X', 'Y' };
    std::cout << b2 << std::endl;
}