CSES - Datatähti 2016 alku

Submission details
Task:	Tontti
Sender:	Kuha
Submission time:	2015-09-29 17:45:52 +0300
Language:	C++
Status:	READY
Result:	100

Feedback
group	verdict	score
#1	ACCEPTED	14
#2	ACCEPTED	33
#3	ACCEPTED	53

Test results
test	verdict	time	group
#1	ACCEPTED	0.05 s	1	details
#2	ACCEPTED	0.06 s	1	details
#3	ACCEPTED	0.05 s	1	details
#4	ACCEPTED	0.06 s	1	details
#5	ACCEPTED	0.05 s	1	details
#6	ACCEPTED	0.08 s	2	details
#7	ACCEPTED	0.07 s	2	details
#8	ACCEPTED	0.07 s	2	details
#9	ACCEPTED	0.07 s	2	details
#10	ACCEPTED	0.07 s	2	details
#11	ACCEPTED	0.82 s	3	details
#12	ACCEPTED	0.82 s	3	details
#13	ACCEPTED	0.58 s	3	details
#14	ACCEPTED	0.63 s	3	details
#15	ACCEPTED	0.63 s	3	details

Code

#include <iostream>
#include <algorithm>
#include <queue>
#include <stack>
#include <string>
#define INF 999999999
#define ll long long
using namespace std;

int main()
{
    int n, m, tr;
    cin>>n>>m>>tr;

    char c[n][m];
    int v[n][m][2];

    for (int y = 0; y < n; y++) {
        for (int x = 0; x < m; x++) {
            cin>>c[y][x];
            v[y][x][0] = 0;
            if (x > 0) v[y][x][0] = v[y][x - 1][0];
            if (c[y][x] == '*') v[y][x][0]++;
            v[y][x][1] = v[y][x][0];
            if (y > 0) v[y][x][1] += v[y - 1][x][1];
        }
    }
    int ans = 0;
    for (int y = 0; y < n; y++) {
        for (int x = 0; x < m; x++) {
            int i = 0;
            int mi = -1;
            int mx = -1;
            int mini = min(m - x, n - y); // BIN��RIHAKU!
            bool tf = false;
            i = 0;
            for (int t = mini / 2; t >= 0; t /= 2) {
                bool b = true;

                while (b && i + t < mini) {
                    i += t;
                    b = true;
                    int w = v[y+i][x+i][1];
                    if (x > 0 && y > 0) w += v[y-1][x-1][1];
                    if (x > 0) w -= v[y+i][x-1][1];
                    if (y > 0) w -= v[y-1][x+i][1];
                    if (w > tr) b = false;
                    else if (w == tr) {
                        b = false;
                        tf = true;
                    }
                    //if (b) cout<<w<<" "<<i<<" too big!"<<endl;
                    //else cout<<w<<" "<<i<<" secondary!"<<endl;
                    if (b) mi = i;
                    else i -= t;
                    if (t == 0) break;
                }
                if (t == 0) break;
            }
            if (!tf) continue;
            i = 0;
            for (int t = mini / 2; t >= 0; t /= 2) {
                bool b = true;

                while (b && i + t < mini) {
                    i += t;
                    b = true;
                    int w = v[y+i][x+i][1];
                    if (x > 0 && y > 0) w += v[y-1][x-1][1];
                    if (x > 0) w -= v[y+i][x-1][1];
                    if (y > 0) w -= v[y-1][x+i][1];
                    if (w > tr) b = false;
                    if (b) mx = i;
                    else i -= t;
                    if (t == 0) break;
                }
                if (t == 0) break;
            }

            //cout<<x<<" "<<y<<" "<<mi<<" "<<mx<<endl;
            if (tf) ans += mx - mi;
        }
    }

    cout<<ans<<endl;

    return 0;
}

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

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 (Kuha)