自我测试是对的，结果只有50分

#include<iostream>
#include<string>
using namespace std;
int main()
{
	int x,i,j,k=0,l=1,z=0;
	string s,w;
	cin>>s;
	//cout<<s;
	while(s[k]!='\0'){
		if(l==10){
			break;
		}
		if(s[k]!='-'){
			z=z+(s[k]-'0')*l;
			l++;
		}
		k++;
	}
	z=z%11;
	if(z==s[k+1]-'0'){
		cout<<"Right";
	}
	else{
		s[k+1]=z+'0';
		cout<<s;
	}
	//cout<<s[k+1];
	return 0;
}