CSES - Datatähti 2016 alku - Results
Submission details
Task:Tontti
Sender:testUser
Submission time:2015-10-07 15:00:01
Language:Java
Status:READY
Result:14
Feedback
groupverdictscore
#1ACCEPTED14
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.18 s1details
#2ACCEPTED0.17 s1details
#3ACCEPTED0.18 s1details
#4ACCEPTED0.17 s1details
#5ACCEPTED0.17 s1details
#6--2details
#7--2details
#8--2details
#9--2details
#10--2details
#11--3details
#12--3details
#13--3details
#14--3details
#15--3details

Code

/**
 * Created by Frans on 5.10.2015.
 */
public class Tontti{

    static int height;
    static int width;
    static byte[][] kentta;
    static int treeWanted;
    static int trees;
    static int minSize;

    public static void main(String[] args){
        IO io = new IO();

        height = io.nextInt();
        width = io.nextInt();
        treeWanted = io.nextInt();
        trees = 0;

        kentta = new byte[width][height];


        //calculate trees and save it in to array
        for (int y=0; y<height; y++) {
            String line = io.next();
            for (int x=0; x<width; x++){
                if (line.charAt(x) == '*'){
                    kentta[x][y] = 1;
                    trees ++;
                }else{
                    kentta[x][y] = 0;
                }
            }
        }

        minSize = (int) Math.ceil(Math.pow(treeWanted,0.5));

        //optimized test area
        double density = (double) trees/ (double) (width*height);
        int optimizeW = Math.max((int) Math.ceil(Math.pow((treeWanted / density), 0.5)), 2);

        int foundArea = 0;

        int direction =0;

        //-1, koska oikea reuna turha kayda
        for(int y=0; y<height-(minSize-1); y++){
            for (int x=0; x<width-(minSize-1); x++){
                int testW = optimizeW;

                testW = Math.min(Math.min(testW, height-y), width-x);
                int amount = CountTree(testW, x,y);

                //haluttu maara
                if (amount == treeWanted){
                    foundArea ++;
                    foundArea += IncreaseArea(testW, x, y);
                    foundArea += DecreaseArea(testW, x, y);
                } else if (amount < treeWanted){
                    foundArea += IncreaseArea(testW, x, y);
                } else { //amount > treeWanted
                    foundArea += DecreaseArea(testW, x, y);
                }

            }
        }

        io.println(foundArea);
        io.close();

    }

    private static int CountTree(int testW, int x, int y) {
        int squareTreeAmount = 0;
        //System.out.println("----" + x + "------" + y);
        for (int y2 = y; y2 < y + testW; y2++) {
            //String debug = "";
            for (int x2 = x; x2 < x + testW; x2++) {
                squareTreeAmount += kentta[x2][y2];
                /*if (kentta[x2][y2] == 1){
                    debug = debug + "*";
                }else{
                    debug = debug + ".";
                }*/
            }
            //System.out.println(debug);
        }
        return squareTreeAmount;
    }

    private static int DecreaseArea(int testW, int x, int y){
        int foundArea = 0;
        testW --;
        while(testW >= minSize){
            int squareTreeAmount = CountTree(testW, x, y);
            if(squareTreeAmount == treeWanted){
                foundArea ++;
            }
            testW --;
        }
        return foundArea;
    }

    private static int IncreaseArea(int testW, int x, int y){
        int foundArea = 0;
        testW ++;
        while(testW + y <= height && testW + x <= width){
            int squareTreeAmount = CountTree(testW, x, y);
            if(squareTreeAmount == treeWanted){
                foundArea ++;
            }
            testW ++;
        }
        return foundArea;
    }


}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
10 10 1
......*...
.......*..
*..*....*.
*....*....
...

correct output
94

user output
94

Test 2

Group: 1

Verdict: ACCEPTED

input
10 10 5
**********
**********
**********
**********
...

correct output
0

user output
0

Test 3

Group: 1

Verdict: ACCEPTED

input
10 10 10
**...*...*
*..*.**.*.
...**.*..*
*...**.*..
...

correct output
4

user output
4

Test 4

Group: 1

Verdict: ACCEPTED

input
10 10 5
****......
*.*.**..**
....*.*..*
...*.***..
...

correct output
16

user output
16

Test 5

Group: 1

Verdict: ACCEPTED

input
10 10 2
**.***..*.
...*.*....
.***.*...*
***.***..*
...

correct output
30

user output
30

Test 6

Group: 2

Verdict:

input
500 500 1
.................................

correct output
9552040

user output
(empty)

Test 7

Group: 2

Verdict:

input
500 500 5
.................................

correct output
1536063

user output
(empty)

Test 8

Group: 2

Verdict:

input
500 500 25000
**...*...**..*.*..*.**.*..*.*....

correct output
288

user output
(empty)

Test 9

Group: 2

Verdict:

input
500 500 12500
**.**.*..*...*.**...*.***........

correct output
786

user output
(empty)

Test 10

Group: 2

Verdict:

input
500 500 5000
.*.*.**..*.*.**.**..*..**...*....

correct output
1763

user output
(empty)

Test 11

Group: 3

Verdict:

input
2000 2000 1
.................................

correct output
489611392

user output
(empty)

Test 12

Group: 3

Verdict:

input
2000 2000 5
.................................

correct output
120725884

user output
(empty)

Test 13

Group: 3

Verdict:

input
2000 2000 400000
..*..**.**.**.*.***...**.*..**...

correct output
1849

user output
(empty)

Test 14

Group: 3

Verdict:

input
2000 2000 200000
***.*....*.*..*....**..*..*.*....

correct output
2665

user output
(empty)

Test 15

Group: 3

Verdict:

input
2000 2000 80000
**.**...*.***.**....**.*....*....

correct output
5587

user output
(empty)