CSES - Putka Open 2020 – 1/5 - Results
Submission details
Task:Ruudukko
Sender:Pohjantahti
Submission time:2020-09-04 18:36:22 +0300
Language:C++ (C++11)
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED16
#2ACCEPTED30
#3ACCEPTED54
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
#7ACCEPTED0.01 s2, 3details
#8ACCEPTED0.01 s2, 3details
#9ACCEPTED0.01 s2, 3details
#10ACCEPTED0.01 s2, 3details
#11ACCEPTED0.01 s2, 3details
#12ACCEPTED0.01 s2, 3details
#13ACCEPTED0.04 s3details
#14ACCEPTED0.04 s3details
#15ACCEPTED0.04 s3details
#16ACCEPTED0.04 s3details
#17ACCEPTED0.04 s3details
#18ACCEPTED0.04 s3details

Code

#include <bits/stdc++.h>

using namespace std;

constexpr int N = 1005;
constexpr int INF = 1000000005;

int n;
bool t[N][N];
int dp[2][N][N]; // mi/mx

int main() {
    cin >> n;
    for (int i = 0; i < n; ++i) {
        string s;
        cin >> s;
        for (int j = 0; j < n; ++j) {
            if (s[j] == 'o') t[i+1][j+1] = true;
        }
    }
    for (int i = 0; i <= n; ++i) {
        dp[0][0][i] = dp[0][i][0] = INF;
        dp[1][0][i] = dp[1][i][0] = -INF;
    }
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= n; ++j) {
            int ami = dp[0][i][j-1];
            int bmi = dp[0][i-1][j];
            int amx = dp[1][i][j-1];
            int bmx = dp[1][i-1][j];
            
            int mi = min(ami, bmi);
            int mx = max(amx, bmx);
            
            if (!(i == 1 && j == 1)) {
                dp[0][i][j] = mi;
                dp[1][i][j] = mx;
            }
            
            if (t[i][j]) {
                dp[0][i][j]++;
                dp[1][i][j]++;
            }
        }
    }
    cout << dp[1][n][n] - dp[0][n][n] + 1 << "\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: ACCEPTED

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

correct output
1

user output
1

Test 14

Group: 3

Verdict: ACCEPTED

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

correct output
1121

user output
1121

Test 15

Group: 3

Verdict: ACCEPTED

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

correct output
1583

user output
1583

Test 16

Group: 3

Verdict: ACCEPTED

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

correct output
1574

user output
1574

Test 17

Group: 3

Verdict: ACCEPTED

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

correct output
1147

user output
1147

Test 18

Group: 3

Verdict: ACCEPTED

input
1000
oooooooooooooooooooooooooooooo...

correct output
1

user output
1