CSES - Datatähti 2015 loppu

Submission details
Task:	Urkupillit
Sender:	MusserO
Submission time:	2015-01-29 13:25:11 +0200
Language:	Java
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	RUNTIME ERROR	0
#2	WRONG ANSWER	0
#3	TIME LIMIT EXCEEDED	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.04 s	1	details
#2	RUNTIME ERROR	0.06 s	1	details
#3	ACCEPTED	0.04 s	1	details
#4	ACCEPTED	0.05 s	1	details
#5	WRONG ANSWER	0.02 s	1	details
#6	ACCEPTED	0.04 s	2	details
#7	WRONG ANSWER	0.07 s	2	details
#8	WRONG ANSWER	0.05 s	2	details
#9	WRONG ANSWER	0.04 s	2	details
#10	WRONG ANSWER	0.04 s	2	details
#11	TIME LIMIT EXCEEDED	--	3	details
#12	RUNTIME ERROR	0.03 s	3	details
#13	RUNTIME ERROR	0.04 s	3	details
#14	RUNTIME ERROR	0.04 s	3	details
#15	TIME LIMIT EXCEEDED	--	3	details

Code

import java.io.*;
import java.util.*;

public class Urkupillit {
	public static void main(String[] args) {
		IO io = new IO();
		int n = io.nextInt();
		int k = io.nextInt();
		int j = 1;
		int m = 0;
		String v = "";
		ArrayList<Integer> l = new ArrayList<Integer>();		
		for (int i = 1; i <= n; ++i){
			if ((n-i)*(n-i+1)/2 > k){
				l.add(i);
				++j;	
			} else {
				++m;
				l.add(n-i+j);		
			}
		}
		boolean br = false;
		for (int i = 0; i < l.size(); ++i){
			if (br){
				br =false;
				continue;
			}
			if (i % 2 == 0 && m < k){
				v += l.get(i+1) + " ";
				v += l.get(i) + " ";
				++m;
				br = true;
			} else {
				v+= l.get(i)+" ";
			}
		}
		io.println(v);
		io.close();
	}

}


class IO extends PrintWriter {
	private InputStreamReader r;
	private static final int BUFSIZE = 1 << 15;
	private char[] buf;
	private int bufc;
	private int bufi;
	private StringBuilder sb;
	
	public IO() {
		super(new BufferedOutputStream(System.out));
		r = new InputStreamReader(System.in);
		
		buf = new char[BUFSIZE];
		bufc = 0;
		bufi = 0;
		sb = new StringBuilder();
	}
	
	private void fillBuf() throws IOException {
		bufi = 0;
		bufc = 0;
		while(bufc == 0) {
			bufc = r.read(buf, 0, BUFSIZE);
			if(bufc == -1) {
				bufc = 0;
				return;
			}
		}
	}
	
	private boolean pumpBuf() throws IOException {
		if(bufi == bufc) {
			fillBuf();
		}
		return bufc != 0;
	}
	
	private boolean isDelimiter(char c) {
		return c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f';
	}
	
	private void eatDelimiters() throws IOException {
		while(true) {
			if(bufi == bufc) {
				fillBuf();
				if(bufc == 0) throw new RuntimeException("IO: Out of input.");
			}
			
			if(!isDelimiter(buf[bufi])) break;
			++bufi;
		}
	}
	
	public String next() {
		try {
			sb.setLength(0);
			
			eatDelimiters();
			int start = bufi;
			
			while(true) {
				if(bufi == bufc) {
					sb.append(buf, start, bufi - start);
					fillBuf();
					start = 0;
					if(bufc == 0) break;
				}
				
				if(isDelimiter(buf[bufi])) break;
				++bufi;
			}
			
			sb.append(buf, start, bufi - start);
			
			return sb.toString();
		} catch(IOException e) {
			throw new RuntimeException("IO.next: Caught IOException.");
		}
	}
	
	public int nextInt() {
		try {
			int ret = 0;
			
			eatDelimiters();
			
			boolean positive = true;
			if(buf[bufi] == '-') {
				++bufi;
				if(!pumpBuf()) throw new RuntimeException("IO.nextInt: Invalid int.");
				positive = false;
			}
			
			boolean first = true;
			while(true) {
				if(!pumpBuf()) break;
				if(isDelimiter(buf[bufi])) {
					if(first) throw new RuntimeException("IO.nextInt: Invalid int.");
					break;
				}
				first = false;
				
				if(buf[bufi] >= '0' && buf[bufi] <= '9') {
					if(ret < -214748364) throw new RuntimeException("IO.nextInt: Invalid int.");
					ret *= 10;
					ret -= (int)(buf[bufi] - '0');
					if(ret > 0) throw new RuntimeException("IO.nextInt: Invalid int.");
				} else {
					throw new RuntimeException("IO.nextInt: Invalid int.");
				}
				
				++bufi;
			}
			
			if(positive) {
				if(ret == -2147483648) throw new RuntimeException("IO.nextInt: Invalid int.");
				ret = -ret;
			}
			
			return ret;
		} catch(IOException e) {
			throw new RuntimeException("IO.nextInt: Caught IOException.");
		}
	}
	
	public long nextLong() {
		try {
			long ret = 0;
			
			eatDelimiters();
			
			boolean positive = true;
			if(buf[bufi] == '-') {
				++bufi;
				if(!pumpBuf()) throw new RuntimeException("IO.nextLong: Invalid long.");
				positive = false;
			}
			
			boolean first = true;
			while(true) {
				if(!pumpBuf()) break;
				if(isDelimiter(buf[bufi])) {
					if(first) throw new RuntimeException("IO.nextLong: Invalid long.");
					break;
				}
				first = false;
				
				if(buf[bufi] >= '0' && buf[bufi] <= '9') {
					if(ret < -922337203685477580L) throw new RuntimeException("IO.nextLong: Invalid long.");
					ret *= 10;
					ret -= (long)(buf[bufi] - '0');
					if(ret > 0) throw new RuntimeException("IO.nextLong: Invalid long.");
				} else {
					throw new RuntimeException("IO.nextLong: Invalid long.");
				}
				
				++bufi;
			}
			
			if(positive) {
				if(ret == -9223372036854775808L) throw new RuntimeException("IO.nextLong: Invalid long.");
				ret = -ret;
			}
			
			return ret;
		} catch(IOException e) {
			throw new RuntimeException("IO.nextLong: Caught IOException.");
		}
	}
	
	public double nextDouble() {
		return Double.parseDouble(next());
	}
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
`5 0` view save

correct output
`1 2 3 4 5` view save

user output
`1 2 3 4 5` view save

Test 2

Group: 1

Verdict: RUNTIME ERROR

input
`5 10` view save

correct output
`5 4 3 2 1` view save

user output
(empty)

Error:

Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 5, Size: 5
	at java.util.ArrayList.rangeCheck(ArrayList.java:653)
	at java.util.ArrayList.get(ArrayList.java:429)
	at Urkupillit.main(Urkupillit.java:29)

Test 3

Group: 1

Verdict: ACCEPTED

input
`5 3` view save

correct output
`4 1 2 3 5` view save

user output
`1 2 5 4 3` view save

Test 4

Group: 1

Verdict: ACCEPTED

input
`5 1` view save

correct output
`2 1 3 4 5` view save

user output
`1 2 3 5 4` view save

Test 5

Group: 1

Verdict: WRONG ANSWER

input
`5 2` view save

correct output
`3 1 2 4 5` view save

user output
`1 2 3 5 4` view save

Test 6

Group: 2

Verdict: ACCEPTED

input
`100 0` view save

correct output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

Test 7

Group: 2

Verdict: WRONG ANSWER

input
`100 4950` view save

correct output
`100 99 98 97 96 95 94 93 92 91...` view save

user output
`99 100 97 98 95 96 93 94 91 92...` view save

Test 8

Group: 2

Verdict: WRONG ANSWER

input
`100 2279` view save

correct output
`100 99 98 97 96 95 94 93 92 91...` view save

user output
`2 1 4 3 6 5 8 7 10 9 12 11 14 ...` view save

Test 9

Group: 2

Verdict: WRONG ANSWER

input
`100 2528` view save

correct output
`100 99 98 97 96 95 94 93 92 91...` view save

user output
`2 1 4 3 6 5 8 7 10 9 12 11 14 ...` view save

Test 10

Group: 2

Verdict: WRONG ANSWER

input
`100 4483` view save

correct output
`100 99 98 97 96 95 94 93 92 91...` view save

user output
`2 1 4 3 100 5 98 99 96 97 94 9...` view save

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

input
`100000 0` view save

correct output
`1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
(empty)

Test 12

Group: 3

Verdict: RUNTIME ERROR

input
`100000 4999950000` view save

correct output
`100000 99999 99998 99997 99996...` view save

user output
(empty)

Error:

Exception in thread "main" java.lang.RuntimeException: IO.nextInt: Invalid int.
	at IO.nextInt(Urkupillit.java:147)
	at Urkupillit.main(Urkupillit.java:8)

Test 13

Group: 3

Verdict: RUNTIME ERROR

input
`100000 2969035543` view save

correct output
`100000 99999 99998 99997 99996...` view save

user output
(empty)

Error:

Exception in thread "main" java.lang.RuntimeException: IO.nextInt: Invalid int.
	at IO.nextInt(Urkupillit.java:147)
	at Urkupillit.main(Urkupillit.java:8)

Test 14

Group: 3

Verdict: RUNTIME ERROR

input
`100000 2495939870` view save

correct output
`100000 99999 99998 99997 99996...` view save

user output
(empty)

Error:

Exception in thread "main" java.lang.RuntimeException: IO.nextInt: Invalid int.
	at IO.nextInt(Urkupillit.java:147)
	at Urkupillit.main(Urkupillit.java:8)

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED

input
`100000 1279770330` view save

correct output
`100000 99999 99998 99997 99996...` view save

user output
(empty)

Datatähti 2015 loppu

Urkupillit

Code

Test details

Test 1

Test 2

Test 3

Test 4

Test 5

Test 6

Test 7

Test 8

Test 9

Test 10

Test 11

Test 12

Test 13

Test 14

Test 15

Tasks

Submissions (MusserO)