题解 | #[NOIP2008]ISBN号码#

#include <iostream>
using namespace std;

int main() {
    int a, b,c,d;
    int sb=0;
    
        cin>>a;cin.ignore(); cin>>b;cin.ignore(); cin>>c;cin.ignore(); cin>>d;cin.ignore();


        sb = ((a*1 )+(b/10%10)*3+(b/100)*2+(b%10)*4+(c/10000)*5+((c/1000)%10) *6+((c/100)%10) *7+((c/10)%10) *8+(c%10) *9)%11;
        //cout << sb;
        
        if(sb == d||d ==0 && sb == 10){
    	cout << "Right"<<endl;
	}
	else if(sb == 10){
		b= -b,c= -c;
		cout<<a<<b<<c<<"-X"<<endl;
	}
	else{
		b= -b,c= -c,d=-sb;
		cout<<a<<b<<c<<d<<endl;
	}

    
}
// 64 位输出请用 printf("%lld")