#include using namespace std; int main() { char isbn[13]; for (int i = 0; i < 13; i++) { cin >> isbn[i]; } //前9位 int sum = 0; //1,5,11跳过 int _count = 0; for (int i = 0; i < 12; i++) { if (i == 1 || i == 5 || i == 11) { _count++; continue; } sum += (isbn[i] - '0') * (i + 1 - _count); } if (sum % 11 == 10 && isbn[12] == 'X') cout << "Right" << endl; else if (sum % 11 == isbn[12] - '0') cout << "Right" << endl; else { for (int i = 0; i < 12; i++) { cout << isbn[i]; } cout << sum % 11 << endl; }; return 0; }