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Datatähti 2015 loppu

Start:2015-01-29 12:15:00
End:2015-01-29 17:15:00
 

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CSES - Datatähti 2015 loppu - Results
History
2015-01-29 16:35:49100
2015-01-29 16:22:280
2015-01-29 16:13:230
2015-01-29 16:11:280
2015-01-29 16:10:340
2015-01-29 16:09:510
2015-01-29 15:47:4317
2015-01-29 15:37:470
2015-01-29 15:30:0059
2015-01-29 15:23:150
2015-01-29 15:21:0959
2015-01-29 15:18:4559
2015-01-29 15:17:1159
2015-01-29 15:16:030
2015-01-29 15:12:120
2015-01-29 14:46:290
2015-01-29 14:05:590
2015-01-29 14:03:000
2015-01-29 13:20:3417
Task:Ruudukko
Sender:Nameci2718_
Submission time:2015-01-29 15:37:47
Language:Java
Status:READY
Score:0

Feedback

groupverdictscore
#1RUNTIME ERROR0
#2RUNTIME ERROR0
#3RUNTIME ERROR0

Test results

testverdicttime (s)group
#1RUNTIME ERROR0.04 / 3.001details
#2RUNTIME ERROR0.06 / 3.001details
#3WRONG ANSWER0.04 / 3.001details
#4WRONG ANSWER0.04 / 3.001details
#5ACCEPTED0.04 / 3.001details
#6RUNTIME ERROR0.15 / 3.002details
#7RUNTIME ERROR0.14 / 3.002details
#8RUNTIME ERROR0.14 / 3.002details
#9RUNTIME ERROR0.14 / 3.002details
#10RUNTIME ERROR0.13 / 3.002details
#11RUNTIME ERROR0.71 / 3.003details
#12RUNTIME ERROR0.68 / 3.003details
#13RUNTIME ERROR0.55 / 3.003details
#14RUNTIME ERROR0.58 / 3.003details
#15RUNTIME ERROR0.59 / 3.003details

Code

public class Main {

	public static void main(String[] args) {
		
		IO io = new IO();
		
		int n = io.nextInt();
		
		String[] characters = new String[n * n];
		
		for (int i = 0; i < n; i++) {
			char[] row = io.next().toCharArray();
			for (int j = 0; j < n; j++) {
				int index = j + i * n;
				characters[index] = row[j]+"";
			}
		}
		
		int xi = 0, yi = 0;
		
		for (int i = 1; i < 2 * n - 1; i++) {
			for (int x = 0; x <= i; x++) {
				int index = x + (i - x) * n;
				if(x >= n || i - x >= n 
						 || x < xi || i - x < yi) continue;
				String up = null, left = null;
				
				if(x != 0) {
					left = characters[index-1];
				}
				if((i - x) != 0) {
					up = characters[index-n];
				}
				String better = better(up, left);
				if(up != left && up != null && left != null) {
					if(up.equals(better)) {
						xi = x;
					} else {
						yi = i - x;
					}
				}
				characters[index] = better.concat(characters[index]);
			}
		}
		
		io.println(characters[n*n-1]);
		
		io.close();
		
	}
	
	public static String better(String up, String left) {
		if(up == null) return left;
		if(left == null) return up;
		if(up.length() < left.length()) return left;
		if(left.length() > up.length()) return up;
		for (int i = 0; i < up.length(); i++) {
			if(up.charAt(i) < left.charAt(i)) {
				return up;
			}
			if(up.charAt(i) > left.charAt(i)) {
				return left;
			}
		}
			
		return up;
	}

}

Test details

Test 1

Group: 1

Verdict: RUNTIME ERROR

input
5
AAAAA
AAAAA
AAAAA
AAAAA
...
view   save

correct output
AAAAAAAAB

view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 2

Group: 1

Verdict: RUNTIME ERROR

input
5
ABABA
BABAB
ABABA
BABAB
...
view   save

correct output
ABABABABA

view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 3

Group: 1

Verdict: WRONG ANSWER

input
5
WRYIU
TWLKH
UJMJC
GRDJW
...
view   save

correct output
WRWJMDJWK

view   save

user output
FKKYK

view   save

Test 4

Group: 1

Verdict: WRONG ANSWER

input
5
RUEAE
ZYHHW
KDBPD
DXREW
...
view   save

correct output
RUEAEWDWX

view   save

user output
EWX

view   save

Test 5

Group: 1

Verdict: ACCEPTED

input
5
SRGYR
MYDOB
GNOVM
SZOZK
...
view   save

correct output
SMGNOOLTU

view   save

user output
SMGNOOLTU

view   save

Test 6

Group: 2

Verdict: RUNTIME ERROR

input
100
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
view   save

correct output
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 7

Group: 2

Verdict: RUNTIME ERROR

input
100
ABABABABABABABABABABABABABABAB...
view   save

correct output
ABABABABABABABABABABABABABABAB...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 8

Group: 2

Verdict: RUNTIME ERROR

input
100
FWOVNYKNMMQCNHJGUYPNEDXGVVGONC...
view   save

correct output
FWDBDECKBHKIACOVUCJGDJOHAYIBHO...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 9

Group: 2

Verdict: RUNTIME ERROR

input
100
ETGCJABWKMAAEOQXWFFYMDJBMNKMQK...
view   save

correct output
EAARGLBRLHCDHHBPABHDAJBEEBHQBE...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 10

Group: 2

Verdict: RUNTIME ERROR

input
100
GNWMLJNHSBAADUFCSGIZMWHZTVDHNR...
view   save

correct output
GEGOFRDKBNLLEUOPOEQCEFMTKANLNC...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 11

Group: 3

Verdict: RUNTIME ERROR

input
500
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
view   save

correct output
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 12

Group: 3

Verdict: RUNTIME ERROR

input
500
ABABABABABABABABABABABABABABAB...
view   save

correct output
ABABABABABABABABABABABABABABAB...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 13

Group: 3

Verdict: RUNTIME ERROR

input
500
HGADXTSFXYIEMDWMFIVQGHTACFUPYI...
view   save

correct output
HGADEJOGAKPJCRAHTABRSDLAVGBFAG...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 14

Group: 3

Verdict: RUNTIME ERROR

input
500
SBLNMAZESQVGWAPZYHQJMQTNGMEZWS...
view   save

correct output
SBLCAMDHILGIDRCIDUNMMAHFYCENOS...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)

Test 15

Group: 3

Verdict: RUNTIME ERROR

input
500
AOXYXRYFWPYWQDPWXQITLHQQUAYZAJ...
view   save

correct output
AOJLDOAPBGEKSGCNKBUMKAJCCWCOOD...
view   save

user output
(empty)

Error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 1
	at java.lang.String.charAt(String.java:646)
	at Main.better(Main.java:59)
	at Main.main(Main.java:35)