CSES - Datatähti 2016 alku

CSES - Datatähti 2016 alku - Results

Submission details
Task:	Tontti
Sender:	kalh
Submission time:	2015-10-11 21:58:21 +0300
Language:	Java
Status:	READY
Result:	47

Feedback
group	verdict	score
#1	ACCEPTED	14
#2	ACCEPTED	33
#3	TIME LIMIT EXCEEDED	0

Test results
test	verdict	time	group
#1	ACCEPTED	0.17 s	1	details
#2	ACCEPTED	0.18 s	1	details
#3	ACCEPTED	0.18 s	1	details
#4	ACCEPTED	0.19 s	1	details
#5	ACCEPTED	0.17 s	1	details
#6	ACCEPTED	0.41 s	2	details
#7	ACCEPTED	0.34 s	2	details
#8	ACCEPTED	0.29 s	2	details
#9	ACCEPTED	0.29 s	2	details
#10	ACCEPTED	0.30 s	2	details
#11	TIME LIMIT EXCEEDED	--	3	details
#12	TIME LIMIT EXCEEDED	--	3	details
#13	ACCEPTED	0.95 s	3	details
#14	ACCEPTED	0.82 s	3	details
#15	TIME LIMIT EXCEEDED	--	3	details

Code

import java.util.*;
import java.math.*;

public class Tehtava3 {

	private static int[][] arvot;
	private static int korkeus;
	private static int leveys;
	private static IO io;
	private static long t;
	private static int pieninKoko;
	private static int ya2;

	public static void laskeTavat(int korkeus, int leveys, String[] metsa,
			int puita) {


		int maara = 0;
		int maaraAlueella = 0;
		int alaarvo = 0;
		int ylaarvo = 0;
		int valiarvo = 0;
		int valimaksimi = 0;

		for (int k = 0; k <= korkeus - pieninKoko; k++) {

			for (int j = 0; j <= leveys - pieninKoko; j++) {
				valimaksimi = Math.min(korkeus - k, leveys - j);


				if (j == 0) {
					ylaarvo = valimaksimi;
					alaarvo = pieninKoko;
					maaraAlueella = puidenMaara(j, k, valiarvo);
					valiarvo = (ylaarvo + alaarvo) / 2;
					while (maaraAlueella != puita && alaarvo <= ylaarvo) {
						if (maaraAlueella > puita) {
							ylaarvo = valiarvo - 1;
						} else {
							alaarvo = valiarvo + 1;
						}

						valiarvo = (ylaarvo + alaarvo) / 2;
						maaraAlueella = puidenMaara(j, k, valiarvo);

					}

				}

				/**
				 * for (int d = ylaarvo; d >= alaarvo; d--) { loydettyMaara =
				 * puidenMaara(j, k, d);
				 * 
				 * if (loydettyMaara == puita) { maara++; }
				 * 
				 * 
				 * else if (loydettyMaara < puita) { break; }
				 * 
				 * }
				 */

				if (alaarvo > ylaarvo) {
					ya2 = alaarvo;
					alaarvo = ylaarvo;
					ylaarvo = ya2;
				}

				if (ylaarvo > valimaksimi)
					ylaarvo = valimaksimi;

				if (alaarvo < pieninKoko)
					alaarvo = pieninKoko;

				if (puidenMaara(j, k, ylaarvo) > puita) {
					while (puidenMaara(j, k, ylaarvo) > puita
							&& ylaarvo > pieninKoko)
						ylaarvo--;
				}

				if (puidenMaara(j, k, alaarvo) < puita) {
					while (puidenMaara(j, k, alaarvo) < puita && alaarvo < valimaksimi)
						alaarvo++;
				}

				while (puidenMaara(j, k, ylaarvo) <= puita&& ylaarvo <= valimaksimi)
					ylaarvo++;

				while (puidenMaara(j, k, alaarvo) >= puita)
					alaarvo--;


				if (puidenMaara(j, k, alaarvo + 1) == puita) {

					if (puidenMaara(j, k, ylaarvo - 1) == puita) {
						maara += ylaarvo - alaarvo - 1;

					}

				}

			}

		}

		//System.out.println("Kesto: " + (System.currentTimeMillis() - t) + "ms"+ ", [" + leveys + ", " + korkeus + "], " + puita + ", tulos: "+ maara);

		io.print(maara);
	}

	public static void laskeTavat2(int korkeus, int leveys, String[] metsa, int puita) {
		
		
		//long a = 0;

		//int maksimiKoko = Math.min(korkeus, leveys);

	//	System.out.println("1. Osa: " + (System.currentTimeMillis()-t) + "ms");
		
		int puitaYhteensa = arvot[leveys-1][korkeus-1];
		
		int maara = 0;
		int maaraAlueella = 0;
		int alaarvo = 0;
		int ylaarvo = 0;
		int valiarvo = 0;
		int valimaksimi = 0;
		int loydettyMaara = 0;
			
		for (int j = 0; j <= leveys - pieninKoko; j++) {
			for (int k = 0; k <= korkeus - pieninKoko; k++) {
				valimaksimi = Math.min(korkeus - k, leveys - j);
				alaarvo = pieninKoko;
				ylaarvo = valimaksimi;
				valiarvo = (ylaarvo + alaarvo) / 2;
				//long t1 = System.currentTimeMillis();
				

				// BINAARIHAKU
				maaraAlueella = puidenMaara(j, k, valiarvo);

				
				while (maaraAlueella != puita && alaarvo <= ylaarvo) {
					if (maaraAlueella > puita) {
						ylaarvo = valiarvo - 1;
					} else {
						alaarvo = valiarvo + 1;
					}

					//System.out.println(j + ":" + k + ", " + alaarvo + ":" + ylaarvo);
						//System.out.println(ylaarvo + ":" + alaarvo);
					valiarvo = (ylaarvo + alaarvo) / 2;
					maaraAlueella = puidenMaara(j, k, valiarvo);
			
				}
				

				
				for (int d = ylaarvo; d >= alaarvo; d--) {
						loydettyMaara = puidenMaara(j, k, d);

					 if (loydettyMaara == puita) {
						maara++;
					}
					 
					 else if (loydettyMaara < puita) {
							break;
					 }

				}
				

			}
			

		}

		//System.out.println("Kesto: " + (System.currentTimeMillis() - t) + "ms" +", [" + leveys + ", " + korkeus + "], " + puita + ", tulos: " + maara);
		//System.out.println("Kesto 2: " + a + "ms");
		io.print(maara);
	}
	
	
	public static void laskeTavatHidas2(int korkeus, int leveys,
			String[] metsa, int puita) {

		// long a = 0;

		int pieninKoko = (int) Math.ceil(Math.sqrt(puita));
		// int maksimiKoko = Math.min(korkeus, leveys);

		// System.out.println("1. Osa: " + (System.currentTimeMillis()-t) +
		// "ms");

		int puitaYhteensa = arvot[leveys - 1][korkeus - 1];

		int maara = 0;
		int maaraAlueella = 0;
		int alaarvo = 0;
		int ylaarvo = 0;
		int valiarvo = 0;
		int valimaksimi = 0;
		int loydettyMaara = 0;

		for (int j = 0; j <= leveys - pieninKoko; j++) {

			for (int k = 0; k <= korkeus - pieninKoko; k++) {
				valimaksimi = Math.min(korkeus - k, leveys - j);
				alaarvo = pieninKoko;
				ylaarvo = valimaksimi;
				valiarvo = (ylaarvo + alaarvo) / 2;
				// long t1 = System.currentTimeMillis();

				// BINAARIHAKU
				maaraAlueella = puidenMaara(j, k, valiarvo);

				while (maaraAlueella != puita && alaarvo <= ylaarvo) {
					if (maaraAlueella > puita) {
						ylaarvo = valiarvo - 1;
					} else {
						alaarvo = valiarvo + 1;
					}

					// System.out.println(j + ":" + k + ", " + alaarvo + ":" +
					// ylaarvo);
					// System.out.println(ylaarvo + ":" + alaarvo);
					valiarvo = (ylaarvo + alaarvo) / 2;
					maaraAlueella = puidenMaara(j, k, valiarvo);

				}

				// a += (System.currentTimeMillis()-t1);

				// System.out.println(alaarvo + ":" + ylaarvo + ", (" +
				// puidenMaara(j, k, alaarvo) + ", " + puidenMaara(j, k,
				// ylaarvo) + ")");
				/**
				 * for (int d = alaarvo; d <= ylaarvo; d++) { loydettyMaara =
				 * puidenMaara(j, k, d);
				 * 
				 * if (loydettyMaara == puita) { maara++; } else if
				 * (loydettyMaara > puita) { break; }
				 * 
				 * 
				 * }
				 */

				for (int d = ylaarvo; d >= alaarvo; d--) {
					loydettyMaara = puidenMaara(j, k, d);

					if (loydettyMaara == puita) {
						maara++;
						// System.out.println(j + ":" + k + ", " + d);

					}

					else if (loydettyMaara < puita) {
						break;
					}

				}

			}

		}

		System.out.println("(Hidas), tulos: " + maara);
		// System.out.println("Kesto 2: " + a + "ms");
	}

	public static int puidenMaara(int alkux, int alkuy, int koko) {

		if (alkux + koko > leveys || alkuy + koko > korkeus)
			return -1;

		int maxx = alkux + koko - 1;
		int maxy = alkuy + koko - 1;

		if (maxx < 0 || maxy < 0)
			return 0;

		// if (puuarvot.containsKey(koko))
		// return puuarvot.get(koko);

		int arvo1 = 0;
		int arvo2 = 0;
		int arvo3 = 0;
		int arvo4 = arvot[maxx][maxy];

		if (alkux != 0) {
			arvo3 = arvot[alkux - 1][maxy];
		}

		if (alkuy != 0) {
			arvo2 = arvot[maxx][alkuy - 1];

			if (alkux != 0)
				arvo1 = arvot[alkux - 1][alkuy - 1];
		}
		return (arvo1 + arvo4 - arvo2 - arvo3);

	}

	public static String[] luoSatunnainen(int leveys, int korkeus) {
		StringBuilder sb;
		String[] metsa = new String[korkeus];
		Random r = new Random();
		for (int i = 0; i < korkeus; i++) {
			sb = new StringBuilder();
			for (int j = 0; j < leveys; j++) {
				int a = r.nextInt(10);
				if (a <= 1)
					sb.append('*');
				else
					sb.append('.');

			}

			metsa[i] = sb.toString();
		}

		return metsa;
	}

	public static void tulostaMetsa(String[] metsa) {

		for (int i = 0; i < metsa.length; i++) {
			for (int j = 0; j < metsa[0].length(); j++) {
				System.out.print(metsa[i].charAt(j) + " ");

			}
			System.out.println();
			System.out.println("--------------------------------------");
		}
	}

	public static void luoArvoTaulukko(String[] metsa) {
		// metsa[0] = leveys
		// metsa = korkeus

		// arvot[0] = korkeus
		// arvot = leveys

		// long t1 = System.currentTimeMillis();

		int summa1 = 0;
		for (int i = 0; i < leveys; i++) {
			if (metsa[0].charAt(i) == '*') {
				summa1++;
			}
			arvot[i][0] = summa1;
		}

		int summa2 = 0;
		for (int y = 1; y < metsa.length; y++) {
			summa1 = 0;
			summa2 = 0;

			for (int x = 0; x < metsa[0].length(); x++) {

				if (metsa[y].charAt(x) == '*') {
					summa2++;
				}

				summa1 = arvot[x][y - 1];

				arvot[x][y] = (summa1 + summa2);
			}
		}

		// System.out.println("arvotaulukon luontiin meni " +
		// (System.currentTimeMillis()-t1) + "ms");
	}

	public static void main(String[] args) {

		io = new IO();

		 korkeus = io.nextInt();
		 leveys = io.nextInt();
		 int puita = io.nextInt();

		//korkeus = 2000;
		//leveys = 2000;
		//int puita = 1000;

		String[] metsa = new String[korkeus];

		for (int i = 0; i < korkeus; i++) {
			metsa[i] = io.next();
		}

		arvot = new int[leveys][korkeus];

		// Random r = new Random();
		//metsa = luoSatunnainen(leveys, korkeus);
		// metsa[0] = "...*******";
		// metsa[1] = ".*...***.*";
		// metsa[2] = "*.**.*....";
		// metsa[3] = "..*..****.";
		// metsa[4] = ".......**.";
		// metsa[5] = "...***...*";
		// metsa[6] = "***......*";
		// metsa[7] = "..**...*..";
		// metsa[8] = "..*.*.****";
		// metsa[9] = "*.*......*";
		//
		// tulostaMetsa(metsa);

		//t = System.currentTimeMillis();

		//
		luoArvoTaulukko(metsa);
		// tulostaMetsa(metsa);

		// tulostaArvoTaulukko();
		pieninKoko = (int) Math.ceil(Math.sqrt(puita));
		
		if (puita < 500)
			laskeTavat2(korkeus, leveys, metsa, puita);
		else
			laskeTavat(korkeus, leveys, metsa, puita);
		// System.out.println("Kesto: " + (System.currentTimeMillis()-t));
		//laskeTavatHidas2(korkeus, leveys, metsa, puita);
		io.close();

	}

}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
`10 10 1 ......... ......... ....... ....*.... ...` view save

correct output
`94` view save

user output
`94` view save

Test 2

Group: 1

Verdict: ACCEPTED

input
`10 10 5 ******** ****** ****** ******** ...` view save

correct output
`0` view save

user output
`0` view save

Test 3

Group: 1

Verdict: ACCEPTED

input
`10 10 10 *......* ...*.. ...*...* ...... ...` view save

correct output
`4` view save

user output
`4` view save

Test 4

Group: 1

Verdict: ACCEPTED

input
`10 10 5 ***...... ....* .......* ....**.. ...` view save

correct output
`16` view save

user output
`16` view save

Test 5

Group: 1

Verdict: ACCEPTED

input
`10 10 2 .... ........ .**....* *... ...` view save

correct output
`30` view save

user output
`30` view save

Test 6

Group: 2

Verdict: ACCEPTED

input
`500 500 1 .................................` view save

correct output
`9552040` view save

user output
`9552040` view save

Test 7

Group: 2

Verdict: ACCEPTED

input
`500 500 5 .................................` view save

correct output
`1536063` view save

user output
`1536063` view save

Test 8

Group: 2

Verdict: ACCEPTED

input
`500 500 25000 *......*......*........` view save

correct output
`288` view save

user output
`288` view save

Test 9

Group: 2

Verdict: ACCEPTED

input
`500 500 12500 ............***........` view save

correct output
`786` view save

user output
`786` view save

Test 10

Group: 2

Verdict: ACCEPTED

input
`500 500 5000 ...*.........*.......` view save

correct output
`1763` view save

user output
`1763` view save

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

input
`2000 2000 1 .................................` view save

correct output
`489611392` view save

user output
(empty)

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

input
`2000 2000 5 .................................` view save

correct output
`120725884` view save

user output
(empty)

Test 13

Group: 3

Verdict: ACCEPTED

input
`2000 2000 400000 ........*......*...` view save

correct output
`1849` view save

user output
`1849` view save

Test 14

Group: 3

Verdict: ACCEPTED

input
`2000 2000 200000 **.....................` view save

correct output
`2665` view save

user output
`2665` view save

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED

input
`2000 2000 80000 ..........*.....*....` view save

correct output
`5587` view save

user output
(empty)

Datatähti 2016 alku

Tontti

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 (kalh)