CSES - Putka Open 2020 – 1/5 - Results
Submission details
Task:Ruudukko
Sender:Ender
Submission time:2020-09-06 00:54:31 +0300
Language:C++11
Status:READY
Result:46
Feedback
groupverdictscore
#1ACCEPTED16
#2ACCEPTED30
#30
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1, 2, 3details
#2ACCEPTED0.01 s1, 2, 3details
#3ACCEPTED0.01 s1, 2, 3details
#4ACCEPTED0.01 s1, 2, 3details
#5ACCEPTED0.01 s1, 2, 3details
#6ACCEPTED0.01 s1, 2, 3details
#7ACCEPTED0.02 s2, 3details
#8ACCEPTED0.03 s2, 3details
#9ACCEPTED0.03 s2, 3details
#10ACCEPTED0.03 s2, 3details
#11ACCEPTED0.03 s2, 3details
#12ACCEPTED0.02 s2, 3details
#130.44 s3details
#14--3details
#15--3details
#16--3details
#17--3details
#180.45 s3details

Code

#include <bits/stdc++.h>
#define ll long long

using namespace std;

int n;
vector<string> r;

bool d[1000][1000][2000];

int f(int a, int b, int k)
{
	if(a<0||b<0) return 0;
	if(d[a][b][k]) return 0;
	d[a][b][k]=1;

	if(!a&&!b) return 1;

	if(r[a][b]=='o') k++;
	return f(a-1,b, k)+f(a,b-1,k);
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	cin >> n;
	r.resize(n);

	for(int i = 0; i<n; i++)
		cin >> r[i];
	
	cout << f(n-1,n-1,0) << "\n";
	
	return 0;
}

Test details

Test 1

Group: 1, 2, 3

Verdict: ACCEPTED

input
10
..........
..........
..........
..........
...

correct output
1

user output
1

Test 2

Group: 1, 2, 3

Verdict: ACCEPTED

input
10
o.o.......
..........
.o...o.oo.
..o...o.oo
...

correct output
9

user output
9

Test 3

Group: 1, 2, 3

Verdict: ACCEPTED

input
10
o......o..
oo.oo.....
oooo....oo
o.......oo
...

correct output
14

user output
14

Test 4

Group: 1, 2, 3

Verdict: ACCEPTED

input
10
..ooooo.oo
.ooo.o..oo
.....ooo.o
ooo.ooo.oo
...

correct output
12

user output
12

Test 5

Group: 1, 2, 3

Verdict: ACCEPTED

input
10
oooooooooo
ooo....ooo
.oo.oo.ooo
oooooooooo
...

correct output
10

user output
10

Test 6

Group: 1, 2, 3

Verdict: ACCEPTED

input
10
oooooooooo
oooooooooo
oooooooooo
oooooooooo
...

correct output
1

user output
1

Test 7

Group: 2, 3

Verdict: ACCEPTED

input
100
.................................

correct output
1

user output
1

Test 8

Group: 2, 3

Verdict: ACCEPTED

input
100
.........o.....o.........o..o....

correct output
114

user output
114

Test 9

Group: 2, 3

Verdict: ACCEPTED

input
100
oo..oo.oo..o...o..o.o..o.........

correct output
151

user output
151

Test 10

Group: 2, 3

Verdict: ACCEPTED

input
100
o..o.ooo..oo.o.o.o..o.o..o..oo...

correct output
143

user output
143

Test 11

Group: 2, 3

Verdict: ACCEPTED

input
100
oo..oooooooooooo.oooo.o.o.oooo...

correct output
115

user output
115

Test 12

Group: 2, 3

Verdict: ACCEPTED

input
100
oooooooooooooooooooooooooooooo...

correct output
1

user output
1

Test 13

Group: 3

Verdict:

input
1000
.................................

correct output
1

user output
(empty)

Test 14

Group: 3

Verdict:

input
1000
o..........o...o...o...o.........

correct output
1121

user output
(empty)

Test 15

Group: 3

Verdict:

input
1000
.o.............o....o.o......o...

correct output
1583

user output
(empty)

Test 16

Group: 3

Verdict:

input
1000
oooooo.oooooo.....oooo..o...o....

correct output
1574

user output
(empty)

Test 17

Group: 3

Verdict:

input
1000
ooooo.oo.oooooooooo...o...oo.....

correct output
1147

user output
(empty)

Test 18

Group: 3

Verdict:

input
1000
oooooooooooooooooooooooooooooo...

correct output
1

user output
(empty)