#include #include #include #include using namespace std; int from_binary_to_decimal(string s) { int power_of_two = 1; int sum = 0; for(int i = s.size() - 1; i >= 0; i--) { if(s[i] == '1') { sum += power_of_two; } power_of_two *= 2; } return sum; } int main() { ios_base::sync_with_stdio(false); cout.tie(0); cin.tie(0); cout << from_binary_to_decimal("101") << " " << from_binary_to_decimal("1"); return 0; }