//身份證字號確認
import java.io.*;
public class a09{  
	public static void main(String args[]) throws Exception
	{  //程式進入點
		String getbr;
		BufferedReader br= new BufferedReader(new InputStreamReader(System.in));
		int checksum1, checksum2,checksum,i;
		int area;
		/*****請使用者輸入身份證字號**********/
	       do {
		System.out.print("請輸入身份證字號：");
		getbr = br.readLine();
		if (getbr.equals("0")) //判斷結束
                          {
                                System.out.println("結束！");
                                return;
                          }
		if (getbr.length()!=10) //判斷結束
                          {
                                System.out.println("請輸入正確的長度");
				continue;
                          }
		getbr=getbr.toUpperCase();//轉成大寫
		char[] id=getbr.toCharArray();//轉字元陣列
		/*計算(2)*/
		if (id[0]=='A')  area=10;
		else if (id[0]=='B') area=11;
		else if (id[0]=='C') area=12;
		else if (id[0]=='D') area=13;
		else if (id[0]=='E') area=14;
		else if (id[0]=='F') area=15;
		else if (id[0]=='G') area=16;
		else if (id[0]=='H') area=17;
		else if (id[0]=='I') area=34;
		else if (id[0]=='J') area=18;
		else if (id[0]=='K') area=19;
		else if (id[0]=='L') area=20;
		else if (id[0]=='M') area=21;
		else if (id[0]=='N') area=22;
		else if (id[0]=='O') area=35;
		else if (id[0]=='P') area=23;
		else if (id[0]=='Q') area=24;
		else if (id[0]=='R') area=25;
		else if (id[0]=='S') area=26;
		else if (id[0]=='T') area=27;
		else if (id[0]=='U') area=28;
		else if (id[0]=='V') area=29;
		else if (id[0]=='W') area=32;
		else if (id[0]=='X') area=30;
		else if (id[0]=='Y') area=31;
		else if (id[0]=='Z') area=33;
		else area=0;
		checksum1=(area%10)*9+area/10;
		/****計算 (3) (4)****/
		checksum2=0;
		for (i=1;i<9;i=i+1) checksum2=checksum2+Character.digit(id[i],10)*(9-i);
		/****計算(5)****/
		checksum=10-((checksum1+checksum2)%10);
		checksum=checksum%10;
		/***判斷檢查碼 ****/
		if (checksum==Character.digit(id[9],10)) 
			System.out.println("正確");
		else
			System.out.println("錯誤");
	  } while (true);
	}
}