CSES - Datatähti 2016 alku

CSES - Datatähti 2016 alku - Results

Submission details
Task:	Tontti
Sender:	kalh
Submission time:	2015-10-11 21:43:17 +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	0.18 s	1	details
#2	ACCEPTED	0.17 s	1	details
#3	ACCEPTED	0.17 s	1	details
#4	ACCEPTED	0.18 s	1	details
#5	ACCEPTED	0.18 s	1	details
#6	ACCEPTED	0.45 s	2	details
#7	ACCEPTED	0.42 s	2	details
#8	ACCEPTED	0.32 s	2	details
#9	ACCEPTED	0.31 s	2	details
#10	ACCEPTED	0.32 s	2	details
#11	TIME LIMIT EXCEEDED	--	3	details
#12	TIME LIMIT EXCEEDED	--	3	details
#13	TIME LIMIT EXCEEDED	--	3	details
#14	TIME LIMIT EXCEEDED	--	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) {
		
		
		//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 k = 0; k <= korkeus-pieninKoko; k++) {
			alaarvo = pieninKoko;


			for (int j = 0; j <= leveys-pieninKoko; j++) {
				valimaksimi = Math.min(korkeus - k, leveys - j);
				if (j == 0)
					ylaarvo = valimaksimi;
				
				while (puidenMaara(j, k, ylaarvo) <= puita && ylaarvo < valimaksimi)
					ylaarvo++;
				
				if (ylaarvo > valimaksimi)
					ylaarvo = valimaksimi;


				valiarvo = (ylaarvo + alaarvo) / 2;
				//long t1 = System.currentTimeMillis();




				// BINAARIHAKU

				maaraAlueella = puidenMaara(j, k, valiarvo);

			if (j == 0) {
				
				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) {
				ylaarvo += alaarvo;
				alaarvo -= ylaarvo;
			}
			
			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 >= pieninKoko && alaarvo <= ylaarvo)
					alaarvo--;
				
			
				
			//	System.out.println(j + ":" + k + ", [" + alaarvo + ":" + ylaarvo + "]");
				if (puidenMaara(j, k, alaarvo+1) == puita) {
				
					if (puidenMaara(j, k, ylaarvo-1) == puita) {
						maara += ylaarvo-alaarvo-1;
						//System.out.println(j + ":" + k + ", " + (ylaarvo-alaarvo-1));
					}
					
					//System.out.println(j + ":" + k + "... " + (ylaarvo-alaarvo-1));
				}

			}
			
			

		}

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

		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(1000);
				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 = 1500;
		//leveys = 1500;
		//int puita = 20;
		
		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));
		laskeTavat(korkeus, leveys, metsa, puita);
		//System.out.println("Kesto: " + (System.currentTimeMillis()-t));
	//	t = System.currentTimeMillis();
		//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: TIME LIMIT EXCEEDED

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

correct output
`1849` view save

user output
(empty)

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

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

correct output
`2665` view save

user output
(empty)

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)