CSES - Leirikisa 9.12.2021 - Results
Submission details
Task:Ruudukko
Sender:motsgar
Submission time:2021-12-09 14:16:19 +0200
Language:C++ (C++17)
Status:READY
Result:17
Feedback
groupverdictscore
#1ACCEPTED17
#20
#30
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1details
#2ACCEPTED0.01 s1details
#3ACCEPTED0.01 s1details
#4ACCEPTED0.01 s1details
#5ACCEPTED0.01 s1details
#60.34 s2details
#70.34 s2details
#8ACCEPTED0.01 s2details
#9ACCEPTED0.01 s2details
#10ACCEPTED0.01 s2details
#110.34 s3details
#120.35 s3details
#13ACCEPTED0.01 s3details
#14ACCEPTED0.02 s3details
#15ACCEPTED0.26 s3details

Code

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int main(int argc, char **argv)
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n;
    cin >> n;
    vector<vector<char>> v(n);

    for (int i = 0; i < n; i++)
    {
        v[i].resize(n);
        for (int j = 0; j < n; j++)
        {
            cin >> v[i][j];
        }
    }

    vector<pair<int,int>> p;
    p.push_back(make_pair(0, 0));

    cout << v[0][0];

    for (int i = 0; i < 2*n - 1; i++)
    {
        vector<pair<int,int>> pc;
        char smallest = 'Z';
        for (auto pa : p)
        {
            if (pa.second + 1 >= n || pa.first + 1 >= n)
            {
                bool w;
                if (pa.second + 1 >= n) w = false;
                else w = true;

                if (w == false && pa.first + 1 >= n)
                {
                    goto exit;
                }

                if (w)
                {
                    char b = v[pa.first][pa.second + 1];
                    if (b <  smallest) pc.clear();
                    if (b <= smallest)
                    pc.push_back(make_pair(pa.first, pa.second + 1));

                    if (b < smallest) smallest = b;
                }
                else
                {
                    char a = v[pa.first + 1][pa.second];
                    if (a <  smallest) pc.clear();
                    if (a <= smallest)
                    pc.push_back(make_pair(pa.first + 1, pa.second));
                    if (a < smallest) smallest = a;
                }
                continue;
            }
            if (pa.second + 1 >= n || v[pa.first + 1][pa.second] < v[pa.first][pa.second + 1]) 
            {
                char a = v[pa.first + 1][pa.second];
                if (a <  smallest) pc.clear();
                if (a <= smallest)
                pc.push_back(make_pair(pa.first + 1, pa.second));
                if (a < smallest) smallest = a;
            }
            else if (pa.first + 1 >= n || v[pa.first][pa.second + 1] < v[pa.first + 1][pa.second])
            {
                char b = v[pa.first][pa.second + 1];
                if (b <  smallest) pc.clear();
                if (b <= smallest)
                pc.push_back(make_pair(pa.first, pa.second + 1));

                if (b < smallest) smallest = b;
            }
            else
            {
                char b = v[pa.first][pa.second + 1];
                if (b <  smallest) pc.clear();
                if (b <= smallest)
                {
                    pc.push_back(make_pair(pa.first, pa.second + 1));
                    pc.push_back(make_pair(pa.first + 1, pa.second));
                }
                if (b < smallest) smallest = b;
            }
        }
        p = pc;
        cout << smallest;
    }
    exit:
    cout << '\n';
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
5
AAAAA
AAAAA
AAAAA
AAAAA
...

correct output
AAAAAAAAB

user output
AAAAAAAAB

Test 2

Group: 1

Verdict: ACCEPTED

input
5
ABABA
BABAB
ABABA
BABAB
...

correct output
ABABABABA

user output
ABABABABA

Test 3

Group: 1

Verdict: ACCEPTED

input
5
WRYIU
TWLKH
UJMJC
GRDJW
...

correct output
WRWJMDJWK

user output
WRWJMDJWK

Test 4

Group: 1

Verdict: ACCEPTED

input
5
RUEAE
ZYHHW
KDBPD
DXREW
...

correct output
RUEAEWDWX

user output
RUEAEWDWX

Test 5

Group: 1

Verdict: ACCEPTED

input
5
SRGYR
MYDOB
GNOVM
SZOZK
...

correct output
SMGNOOLTU

user output
SMGNOOLTU

Test 6

Group: 2

Verdict:

input
100
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

correct output
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

user output
(empty)

Test 7

Group: 2

Verdict:

input
100
ABABABABABABABABABABABABABABAB...

correct output
ABABABABABABABABABABABABABABAB...

user output
(empty)

Test 8

Group: 2

Verdict: ACCEPTED

input
100
FWOVNYKNMMQCNHJGUYPNEDXGVVGONC...

correct output
FWDBDECKBHKIACOVUCJGDJOHAYIBHO...

user output
FWDBDECKBHKIACOVUCJGDJOHAYIBHO...
Truncated

Test 9

Group: 2

Verdict: ACCEPTED

input
100
ETGCJABWKMAAEOQXWFFYMDJBMNKMQK...

correct output
EAARGLBRLHCDHHBPABHDAJBEEBHQBE...

user output
EAARGLBRLHCDHHBPABHDAJBEEBHQBE...
Truncated

Test 10

Group: 2

Verdict: ACCEPTED

input
100
GNWMLJNHSBAADUFCSGIZMWHZTVDHNR...

correct output
GEGOFRDKBNLLEUOPOEQCEFMTKANLNC...

user output
GEGOFRDKBNLLEUOPOEQCEFMTKANLNC...
Truncated

Test 11

Group: 3

Verdict:

input
500
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

correct output
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

user output
(empty)

Test 12

Group: 3

Verdict:

input
500
ABABABABABABABABABABABABABABAB...

correct output
ABABABABABABABABABABABABABABAB...

user output
(empty)

Test 13

Group: 3

Verdict: ACCEPTED

input
500
HGADXTSFXYIEMDWMFIVQGHTACFUPYI...

correct output
HGADEJOGAKPJCRAHTABRSDLAVGBFAG...

user output
HGADEJOGAKPJCRAHTABRSDLAVGBFAG...
Truncated

Test 14

Group: 3

Verdict: ACCEPTED

input
500
SBLNMAZESQVGWAPZYHQJMQTNGMEZWS...

correct output
SBLCAMDHILGIDRCIDUNMMAHFYCENOS...

user output
SBLCAMDHILGIDRCIDUNMMAHFYCENOS...
Truncated

Test 15

Group: 3

Verdict: ACCEPTED

input
500
AOXYXRYFWPYWQDPWXQITLHQQUAYZAJ...

correct output
AOJLDOAPBGEKSGCNKBUMKAJCCWCOOD...

user output
AOJLDOAPBGEKSGCNKBUMKAJCCWCOOD...
Truncated