CSES - Datatähti 2025 alku

CSES - Datatähti 2025 alku - Results

Submission details
Task:	Robotti
Sender:	MituFin
Submission time:	2024-11-09 19:12:31 +0200
Language:	C++ (C++17)
Status:	READY
Result:	0

Feedback
group	verdict	score
#1	WRONG ANSWER	0
#2	WRONG ANSWER	0

Test results
test	verdict	time	group
#1	WRONG ANSWER	0.00 s	1, 2	details
#2	WRONG ANSWER	0.00 s	1, 2	details
#3	WRONG ANSWER	0.00 s	1, 2	details
#4	WRONG ANSWER	0.00 s	1, 2	details
#5	WRONG ANSWER	0.00 s	1, 2	details
#6	WRONG ANSWER	0.00 s	1, 2	details
#7	WRONG ANSWER	0.00 s	1, 2	details
#8	WRONG ANSWER	0.00 s	1, 2	details
#9	WRONG ANSWER	0.00 s	1, 2	details
#10	WRONG ANSWER	0.00 s	1, 2	details
#11	WRONG ANSWER	0.00 s	1, 2	details
#12	WRONG ANSWER	0.00 s	2	details
#13	WRONG ANSWER	0.00 s	2	details
#14	WRONG ANSWER	0.00 s	2	details
#15	WRONG ANSWER	0.00 s	2	details
#16	WRONG ANSWER	0.00 s	2	details
#17	WRONG ANSWER	0.01 s	2	details
#18	WRONG ANSWER	0.01 s	2	details
#19	WRONG ANSWER	0.01 s	2	details
#20	WRONG ANSWER	0.01 s	2	details
#21	WRONG ANSWER	0.01 s	2	details
#22	WRONG ANSWER	0.01 s	2	details
#23	WRONG ANSWER	0.01 s	2	details
#24	WRONG ANSWER	0.01 s	2	details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:14:9: warning: 'coins' may be used uninitialized [-Wmaybe-uninitialized]
   14 |     int coins;
      |         ^~~~~
input/code.cpp:66:19: warning: 'steps' may be used uninitialized in this function [-Wmaybe-uninitialized]
   66 |             steps += coinsOnLeft[indexLeft] + robotDisplacement;
      |             ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
input/code.cpp:44:19: warning: 'robotDisplacement' may be used uninitialized in this function [-Wmaybe-uninitialized]
   44 |             steps -= robotDisplacement;
      |             ~~~~~~^~~~~~~~~~~~~~~~~~~~

Code

#include <iostream>
using namespace std;
// input looks like this:
// 6
// *..R**
int main() {
    int rooms;
    string roomlayout;
    cin >> rooms;
    cin >> roomlayout;
    int robotSpot = roomlayout.find("R");
    int robotDisplacement;

    int coins;
    int steps;
    int coinsOnLeft[robotSpot + 1] = {0};
    int indexLeft = 0;
    int coinsOnRight[rooms - robotSpot - 1] = {0};
    int indexRight = 0;
    int totalCoinsOnMap = 0;

    for (int i = 1; i <= robotSpot; i++) {
        if (roomlayout[robotSpot - i] == '*') {
            coinsOnLeft[indexLeft] = i;
            //cout << coinsOnLeft[indexLeft] << " list left\n";
            indexLeft += 1;
            totalCoinsOnMap += 1;
        }
    } 
    for (int i = 1; i <= rooms - robotSpot - 1; i++) {
        if (roomlayout[robotSpot + i] == '*') {
            coinsOnRight[indexRight] = i;
            indexRight += 1;
            totalCoinsOnMap += 1;
        }
    }

    indexLeft = 0, indexRight = 0;
    //cout << coinsOnLeft[indexLeft] << " " << coinsOnRight[indexRight] << "what\n";
    while (true) {
        //cout << "test" << coinsOnLeft[indexLeft] << " " << coinsOnRight[indexRight] << " H\n";
        if (coinsOnLeft[indexLeft] == 0 && coinsOnRight[indexRight] != 0) {
            //cout << coins << " " << steps << " no coins on left\n";
            steps -= robotDisplacement;
            while (true) {
                coins += 1;
                indexRight += 1;
                if (coinsOnRight[indexRight] == 0) break;
            }
            steps += coinsOnRight[indexRight - 1];
            break;

        } else if (coinsOnLeft[indexLeft] != 0 && coinsOnRight[indexRight] == 0) {
            //cout << coins << " " << steps << " " << robotDisplacement << " no coins on right\n";
            steps += robotDisplacement;
            while (true) {
                coins += 1;
                indexLeft += 1;
                if (coinsOnLeft[indexLeft] == 0) break;
            }
            steps += coinsOnLeft[indexLeft - 1];
            break;

        } else if (coinsOnLeft[indexLeft] + robotDisplacement < coinsOnRight[indexRight] - robotDisplacement) {
            //cout << coins << " " << steps << " coin grabbed from left\n";
            steps += coinsOnLeft[indexLeft] + robotDisplacement;
            coins += 1;
            robotDisplacement = -coinsOnLeft[indexLeft];
            indexLeft += 1;

        } else if (coinsOnLeft[indexLeft] + robotDisplacement > coinsOnRight[indexRight] - robotDisplacement) {
            //cout << coins << " " << steps << " coin grabbed from right\n";
            steps += coinsOnRight[indexRight] - robotDisplacement;
            coins += 1;
            robotDisplacement = coinsOnRight[indexRight];
            indexRight += 1;
            
        } else break;
        if (coins == totalCoinsOnMap) {
            //cout << "break";
            break;
        }
    }

    cout << steps << " " << coins;
   
    return 0;
}

Test details

Test 1

Group: 1, 2

Verdict: WRONG ANSWER

input
`1 R` view save

correct output
`0 0` view save

user output
`1431654848 0` view save

Test 2

Group: 1, 2

Verdict: WRONG ANSWER

input
`10 ...R......` view save

correct output
`0 0` view save

user output
`1431654848 0` view save

Test 3

Group: 1, 2

Verdict: WRONG ANSWER

input
`10 .R...*` view save

correct output
`12 5` view save

user output
`1431654860 5` view save

Test 4

Group: 1, 2

Verdict: WRONG ANSWER

input
`10 *R****` view save

correct output
`0 0` view save

user output
`1431654848 0` view save

Test 5

Group: 1, 2

Verdict: WRONG ANSWER

input
`1000 R................................` view save

correct output
`947 9` view save

user output
`1431655795 9` view save

Test 6

Group: 1, 2

Verdict: WRONG ANSWER

input
`1000 .................................` view save

correct output
`886 9` view save

user output
`1431654848 0` view save

Test 7

Group: 1, 2

Verdict: WRONG ANSWER

input
`1000 .........................` view save

correct output
`1287 400` view save

user output
`1431656135 400` view save

Test 8

Group: 1, 2

Verdict: WRONG ANSWER

input
`1000 **********.***************...` view save

correct output
`0 0` view save

user output
`1431654848 0` view save

Test 9

Group: 1, 2

Verdict: WRONG ANSWER

input
`1000 ******************************...` view save

correct output
`0 0` view save

user output
`1431654848 0` view save

Test 10

Group: 1, 2

Verdict: WRONG ANSWER

input
`1000 R*****************************...` view save

correct output
`999 999` view save

user output
`1431676693 1000` view save

Test 11

Group: 1, 2

Verdict: WRONG ANSWER

input
`1000 ******************************...` view save

correct output
`999 999` view save

user output
`1431654848 0` view save

Test 12

Group: 2

Verdict: WRONG ANSWER

input
`10000 .......*...................*...` view save

correct output
`10971 999` view save

user output
`1431665819 999` view save

Test 13

Group: 2

Verdict: WRONG ANSWER

input
`10000 ...........................` view save

correct output
`9999 999` view save

user output
`1431654848 0` view save

Test 14

Group: 2

Verdict: WRONG ANSWER

input
`10000 ...............*.....` view save

correct output
`18766 5000` view save

user output
`1431673614 5000` view save

Test 15

Group: 2

Verdict: WRONG ANSWER

input
`10000 R*****************************...` view save

correct output
`9999 9999` view save

user output
`1431676693 10000` view save

Test 16

Group: 2

Verdict: WRONG ANSWER

input
`10000 ******************************...` view save

correct output
`9999 9999` view save

user output
`1431654848 0` view save

Test 17

Group: 2

Verdict: WRONG ANSWER

input
`200000 .................................` view save

correct output
`0 0` view save

user output
`1431654848 0` view save

Test 18

Group: 2

Verdict: WRONG ANSWER

input
`200000 .................................` view save

correct output
`299934 10000` view save

user output
`1431954782 10000` view save

Test 19

Group: 2

Verdict: WRONG ANSWER

input
`200000 ............*...*....` view save

correct output
`299998 100000` view save

user output
`1431954846 100000` view save

Test 20

Group: 2

Verdict: WRONG ANSWER

input
`200000 ******************************...` view save

correct output
`0 0` view save

user output
`1431654848 0` view save

Test 21

Group: 2

Verdict: WRONG ANSWER

input
`200000 R................................` view save

correct output
`133765 3` view save

user output
`1431788613 3` view save

Test 22

Group: 2

Verdict: WRONG ANSWER

input
`200000 R................................` view save

correct output
`199982 5000` view save

user output
`1431854830 5000` view save

Test 23

Group: 2

Verdict: WRONG ANSWER

input
`200000 R*****************************...` view save

correct output
`199999 199999` view save

user output
`1431676693 200000` view save

Test 24

Group: 2

Verdict: WRONG ANSWER

input
`200000 ******************************...` view save

correct output
`199999 199999` view save

user output
`1431654848 0` view save

Datatähti 2025 alku

Robotti

Compiler report

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

Test 16

Test 17

Test 18

Test 19

Test 20

Test 21

Test 22

Test 23

Test 24

Tasks

Submissions (MituFin)