CSES - Datatähti 2016 alku - Results
Submission details
Task:Tontti
Sender:Oispa Kaljaa
Submission time:2015-09-28 00:48:22
Language:C++
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
#30
Test results
testverdicttimegroup
#10.06 s1details
#2ACCEPTED0.05 s1details
#3ACCEPTED0.05 s1details
#4ACCEPTED0.06 s1details
#5ACCEPTED0.04 s1details
#60.09 s2details
#7ACCEPTED0.08 s2details
#8ACCEPTED0.07 s2details
#9ACCEPTED0.08 s2details
#10ACCEPTED0.07 s2details
#110.84 s3details
#12ACCEPTED0.89 s3details
#13ACCEPTED0.75 s3details
#14ACCEPTED0.74 s3details
#15ACCEPTED0.78 s3details

Code

#include <bits/stdc++.h>

#define i64 long long
#define u64 unsigned long long
#define i32 int
#define u32 unsigned int

#define pii pair<int, int>
#define pll pair<long long, long long>

#define defmod 1000000007
using namespace std;

int s[2020][2020] = {0};

int sum(int a, int b, int c, int d){
	int re = s[c][d];
	if(a > 0)
		re-=s[a-1][d];
	if(b > 0)
		re-=s[c][b-1];
	if(a > 0 && b > 0)
		re+=s[a-1][b-1];
	return re;
}

int main(){
	cin.sync_with_stdio(0);
	cin.tie(0);
	
	int n, m, x; cin >> n >> m >> x;
	string t[2020];
	for(int i = 0; i < n; i++){
		cin >> t[i];
		int row = 0;
		for(int j = 0; j < m; j++){
			if(t[i][j] == '*')
				row++;
			s[i][j]+=row;
			if(i > 0)
				s[i][j]+=s[i-1][j];
		}
	}
	
	i64 re = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m; j++){
			int a = 0, b = 0;
			

			for(int ad = 1<<20; ad >= 1; ad/=2){
				
				while(i+a+ad < n && j+a+ad < m && sum(i, j, i+a+ad, j+a+ad) < x)
					a+=ad;
			}
			for(int ad = 1<<20; ad >= 1; ad/=2){
				
				while(i+b+ad < n && j+b+ad < m && sum(i, j, i+b+ad, j+b+ad) <= x)
					b+=ad;
			}
			//cout << "paikka " << i << ", " << j << " a-b " << a << "-" << b << endl;
			re+=b-a;
		}
	}
	cout << re << endl;
	return 0;
}

Test details

Test 1

Group: 1

Verdict:

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

correct output
94

user output
84

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
9552032

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
489611383

Test 12

Group: 3

Verdict: ACCEPTED

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

correct output
120725884

user output
120725884

Test 13

Group: 3

Verdict: ACCEPTED

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

correct output
1849

user output
1849

Test 14

Group: 3

Verdict: ACCEPTED

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

correct output
2665

user output
2665

Test 15

Group: 3

Verdict: ACCEPTED

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

correct output
5587

user output
5587