简简单单

#include <bits/stdc++.h>
using namespace std;

char s[21];

int main() {
	scanf("%s", s + 1);
	int n = 13, sum = 0, x = 0;
	for (int i = 1; i < n; i ++) if (s[i] != '-') {
		int y = s[i] - '0';
		x ++;
		sum += x * y;
	}
	sum %= 11;
	char c;
	if (sum == 10) c = 'X';
	else c = sum + '0';
	if (s[n] == c) printf("Right\n");
	else {
		for (int i = 1; i < n; i ++) printf("%c", s[i]);
		printf("%c\n", c);
	}
	return 0;
}