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Datatähti 2016 alku

Start:2015-09-28 00:00:00
End:2015-10-12 00:00:00
 

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CSES - Datatähti 2016 alku - Results
History
2015-10-08 14:45:35100
2015-10-08 14:37:300
2015-10-08 13:21:010
2015-10-08 13:18:530
2015-10-08 12:40:340
2015-10-08 12:38:160
2015-10-08 11:58:0847
2015-10-08 11:50:3447
2015-10-08 11:48:400
2015-10-02 14:41:2747
2015-10-02 14:40:500
2015-10-02 14:35:060
2015-10-02 14:10:0547
2015-10-02 14:03:580
2015-10-02 13:52:160
2015-10-02 13:12:500
2015-10-02 13:02:420
Task:Tontti
Sender:Perdex
Submission time:2015-10-08 14:45:35
Language:Java
Status:READY
Score:100

Feedback

groupverdictscore
#1ACCEPTED14
#2ACCEPTED33
#3ACCEPTED53

Test results

testverdicttime (s)group
#1ACCEPTED0.17 / 1.001details
#2ACCEPTED0.17 / 1.001details
#3ACCEPTED0.17 / 1.001details
#4ACCEPTED0.17 / 1.001details
#5ACCEPTED0.17 / 1.001details
#6ACCEPTED0.30 / 1.002details
#7ACCEPTED0.30 / 1.002details
#8ACCEPTED0.29 / 1.002details
#9ACCEPTED0.29 / 1.002details
#10ACCEPTED0.28 / 1.002details
#11ACCEPTED0.88 / 1.003details
#12ACCEPTED0.89 / 1.003details
#13ACCEPTED0.53 / 1.003details
#14ACCEPTED0.59 / 1.003details
#15ACCEPTED0.68 / 1.003details

Code

public class Tontti{
    
    
    public static void main(String[] args){
        IO io = new IO();
        
        int n = io.nextInt(), m = io.nextInt(), x = io.nextInt();
        
        String row;
        
        int[][] metaTrees = new int[n + 1][m + 1];
        
        for(int i = 0; i < n; i++){
            row = io.next();
            
            for(int j = 0; j < m; j++){
                
                metaTrees[i + 1][j + 1] = metaTrees[i][j + 1] + metaTrees[i + 1][j] - metaTrees[i][j];
                
                if(row.charAt(j) == '*')
                    metaTrees[i + 1][j + 1]++;
            }
        }
        
//        for(int i = 0; i < n; i++){
//            for(int j = 0; j < m; j++){
//                io.print(metaTrees[i + 1][j + 1] + " ");
//            }
//            io.println();
//        }
        
        
        int ans = 0, top, bottom, max, k1 = 0, k2, minSize = (int)Math.ceil(Math.sqrt(x)) - 2;
        
        for(int i = 0; i + minSize < n; i++){
            
            
            for(int j = 0; j + minSize < m; j++){
                
                bottom = minSize;
                max = Math.min(n - i, m - j);
                
                top = max;
                
                while(top != bottom + 1){
                    k1 = (top + bottom) / 2;
                    
                    if(metaTrees[i + k1 + 1][j + k1 + 1] - metaTrees[i + k1 + 1][j]
                            - metaTrees[i][j + k1 + 1] + metaTrees[i][j] < x)
                        bottom = k1;
                    else
                        top = k1;
                    
                }
                
                k1 = bottom;
                
                top = max;
                
                while(top != bottom + 1){
                    k2 = (top + bottom) / 2;
                    
                    if(metaTrees[i + k2 + 1][j + k2 + 1] - metaTrees[i + k2 + 1][j]
                            - metaTrees[i][j + k2 + 1] + metaTrees[i][j] <= x)
                        bottom = k2;
                    else
                        top = k2;
                    
                }
                
                
                ans += bottom - k1;
                
            }
        }
        
        io.println(ans);
        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: ACCEPTED

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

correct output
489611392
view   save

user output
489611392
view   save

Test 12

Group: 3

Verdict: ACCEPTED

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

correct output
120725884
view   save

user output
120725884
view   save

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: ACCEPTED

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

correct output
5587
view   save

user output
5587
view   save