CSES - Datatähti 2016 alku - Results
Submission details
Task:Tontti
Sender:juhoh
Submission time:2015-10-01 14:23:01
Language:C++
Status:READY
Result:47
Feedback
groupverdictscore
#1ACCEPTED14
#2ACCEPTED33
#30
Test results
testverdicttimegroup
#1ACCEPTED0.05 s1details
#2ACCEPTED0.05 s1details
#3ACCEPTED0.05 s1details
#4ACCEPTED0.05 s1details
#5ACCEPTED0.05 s1details
#6ACCEPTED0.28 s2details
#7ACCEPTED0.28 s2details
#8ACCEPTED0.11 s2details
#9ACCEPTED0.16 s2details
#10ACCEPTED0.19 s2details
#11--3details
#12--3details
#13--3details
#14--3details
#15--3details

Code

#include <algorithm>
#include <cmath>
#include <iostream>
#include <vector>

typedef long long int ll;

using namespace std;

const int N = 2000;

int n, m, x;
int field[N][N];
ll kertyma[N][N];

ll p(int x1_, int y1_, int x2, int y2) {
    int x1 = x1_-1;
    int y1 = y1_-1;
    int a = 0, b = 0, c = 0;
    if (x1 >= 0) {
        a = kertyma[x1][y2];
    }
    if (y1 >= 0) {
        b = kertyma[x2][y1];
    }
    if (x1 >= 0 && y1 >= 0) {
        c = kertyma[x1][y1];
    } else {
        c = 0;
    }
    return kertyma[x2][y2] + c - b - a;
}

int main() {

    cin >> m >> n >> x;

    for (int j = 0; j < m; ++j) {
        for (int i = 0; i < n; ++i) {
            char c;
            cin >> c;
            field[i][j] = c == '*';
        }
    }

    kertyma[0][0] = field[0][0];

    for (int i = 1; i < n; ++i) {
        kertyma[i][0] = kertyma[i-1][0]+field[i][0];
    }

    for (int j = 1; j < m; ++j) {
        kertyma[0][j] = kertyma[0][j-1]+field[0][j];
    }

    for (int i = 1; i < n; ++i) {
        for (int j = 1; j < m; ++j) {
            kertyma[i][j] = field[i][j] + kertyma[i-1][j] + kertyma[i][j-1] - kertyma[i-1][j-1];
        }
    }

    ll result = 0;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            int minSize = (int)sqrt(x);
            int maxSize = min(n-i, m-j);
            for (int s = minSize; s <= maxSize; ++s) {
                ll q = p(i, j, i+s-1, j+s-1);
                if (q == x) {
                    ++result;
                }
                if (q > x) {
                    continue;
                }
            }
        }
    }

    cout << result << endl;

    return 0;
}

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: ACCEPTED

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

correct output
9552040

user output
9552040

Test 7

Group: 2

Verdict: ACCEPTED

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

correct output
1536063

user output
1536063

Test 8

Group: 2

Verdict: ACCEPTED

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

correct output
288

user output
288

Test 9

Group: 2

Verdict: ACCEPTED

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

correct output
786

user output
786

Test 10

Group: 2

Verdict: ACCEPTED

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

correct output
1763

user output
1763

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)