ACGO首AC的GO

# include <iostream>
# include <string>
using namespace std;
int main(){
    string s;
    cin >> s;
    int mod = 0;
    char end = ' ';
    mod += (s[0] - 48) * 1 + 
        (s[2] - 48) * 2 + 
        (s[3] - 48) * 3 + 
        (s[4] - 48) * 4 + 
        (s[6] - 48) * 5 + 
        (s[7] - 48) * 6 + 
        (s[8] - 48) * 7 + 
        (s[9] - 48) * 8 + 
        (s[10] - 48) * 9;
    mod %= 11;
    if (mod == 10) end = 'X';
    else end = mod + 48;
    if (s[12] == end) cout << "Right" << endl;
    else cout << s.substr(0, 12) << end << endl;
    return 0;
}