CSES - Datatähti 2025 alku

CSES - Datatähti 2025 alku - Results

Submission details
Task:	Kortit I
Sender:	drvilepis
Submission time:	2024-10-28 10:59:19 +0200
Language:	C++ (C++20)
Status:	READY
Result:	0

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

Test results
test	verdict	group
#1	WRONG ANSWER	1, 2, 3	details
#2	WRONG ANSWER	2, 3	details
#3	WRONG ANSWER	3	details
#4	WRONG ANSWER	3	details
#5	WRONG ANSWER	3	details
#6	WRONG ANSWER	3	details
#7	WRONG ANSWER	3	details
#8	WRONG ANSWER	3	details
#9	WRONG ANSWER	3	details
#10	WRONG ANSWER	3	details
#11	WRONG ANSWER	3	details
#12	WRONG ANSWER	3	details
#13	WRONG ANSWER	3	details
#14	WRONG ANSWER	3	details
#15	WRONG ANSWER	3	details
#16	WRONG ANSWER	3	details
#17	WRONG ANSWER	3	details
#18	WRONG ANSWER	3	details
#19	WRONG ANSWER	3	details
#20	WRONG ANSWER	3	details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:13:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |     for (int i = 0; i < rooms.length(); ++i) {
      |                     ~~^~~~~~~~~~~~~~~~
input/code.cpp:11:9: warning: 'robot' may be used uninitialized in this function [-Wmaybe-uninitialized]
   11 |     int robot;
      |         ^~~~~

Code

#include <algorithm>
#include <iostream>
#include <string>

int main() {
    int n;
    std::cin >> n;
    std::string rooms;
    std::cin >> rooms;

    int robot;

    for (int i = 0; i < rooms.length(); ++i) {
        if (rooms[i] == 'R') robot = i;
    }

    int coins = 0;
    int steps = 0;

    bool done = false;
    while (!done) {
        int i = 1;

        int lb = robot;
        int ub = rooms.length()-robot-1;

        int sign = (ub-lb)/std::abs(ub-lb);
        int found = false;
        for (; i <= std::min(lb, ub); ++i) {
            if (rooms[robot-i] == '*') {
                if (rooms[robot+i] == '*') {
                    done = true;
                    break;
                } else {
                    rooms[robot] = '.';
                    robot -= i;
                    coins++;
                    steps += i;
                    found = true;
                    break;
                }
            } else if (rooms[robot+i] == '*') {
                rooms[robot] = '.';
                robot += i;
                coins++;
                steps += i;
                found = true;
                break;
            }
        }
        if (done || found) continue;

        for (;i <= std::max(lb, ub); ++i) {
            if (rooms[robot+i*sign] == '*') {
                rooms[robot] = '.';
                robot += i*sign;
                coins++;
                steps += i;
                found = true;
                break;
            }
        }
        if (!found) {
            done = true;
        }
    }

    std::cout << steps << " " << coins << "\n";
}

Test details

Test 1

Group: 1, 2, 3

Verdict: WRONG ANSWER

input
`54 4 4 0 3 1 3 3 2 2 4 0 4 ...` view save

correct output
`NO NO NO NO NO ...` view save

user output
`0 0` view save

Test 2

Group: 2, 3

Verdict: WRONG ANSWER

input
`284 6 1 0 5 0 2 7 1 5 7 7 5 ...` view save

correct output
`NO NO YES 1 2 3 4 5 6 7 2 3 4 5 6 1 7 ...` view save

user output
`0 0` view save

Test 3

Group: 3

Verdict: WRONG ANSWER

input
`955 14 2 10 12 2 5 10 4 9 14 1 13 ...` view save

correct output
`YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 4

Group: 3

Verdict: WRONG ANSWER

input
`869 17 12 9 16 8 4 15 9 9 17 11 15 ...` view save

correct output
`NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 5

Group: 3

Verdict: WRONG ANSWER

input
`761 18 3 15 19 1 15 18 8 1 19 19 17 ...` view save

correct output
`YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 6

Group: 3

Verdict: WRONG ANSWER

input
`925 21 14 21 20 18 18 20 7 6 21 14 9 ...` view save

correct output
`NO NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 7

Group: 3

Verdict: WRONG ANSWER

input
`529 22 3 3 22 17 5 22 6 15 22 22 20 ...` view save

correct output
`YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 8

Group: 3

Verdict: WRONG ANSWER

input
`576 23 18 9 23 16 8 23 16 13 23 16 22 ...` view save

correct output
`NO NO NO NO NO ...` view save

user output
`0 0` view save

Test 9

Group: 3

Verdict: WRONG ANSWER

input
`625 24 2 22 24 15 21 24 6 3 24 21 1 ...` view save

correct output
`YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 10

Group: 3

Verdict: WRONG ANSWER

input
`676 25 16 25 25 15 2 25 15 7 25 15 16 ...` view save

correct output
`NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 11

Group: 3

Verdict: WRONG ANSWER

input
`729 26 2 18 26 14 18 26 5 18 26 19 13 ...` view save

correct output
`YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 12

Group: 3

Verdict: WRONG ANSWER

input
`784 27 26 7 27 14 0 27 14 5 27 14 14 ...` view save

correct output
`NO NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 13

Group: 3

Verdict: WRONG ANSWER

input
`841 28 26 16 28 13 19 28 5 8 28 26 4 ...` view save

correct output
`NO NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 14

Group: 3

Verdict: WRONG ANSWER

input
`900 29 24 15 29 13 2 29 13 7 29 13 16 ...` view save

correct output
`NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 15

Group: 3

Verdict: WRONG ANSWER

input
`961 30 24 26 30 12 24 30 4 29 30 24 14 ...` view save

correct output
`NO NO NO NO YES ...` view save

user output
`0 0` view save

Test 16

Group: 3

Verdict: WRONG ANSWER

input
`1000 15 12 6 33 18 30 44 4 26 6 6 5 ...` view save

correct output
`NO NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 17

Group: 3

Verdict: WRONG ANSWER

input
`1000 45 32 30 4 0 3 46 23 10 71 19 46 ...` view save

correct output
`NO NO YES 1 2 3 4 5 6 7 8 9 10 11 12 13 ...` view save

user output
`0 0` view save

Test 18

Group: 3

Verdict: WRONG ANSWER

input
`1000 51 29 37 75 11 72 5 2 4 31 8 26 ...` view save

correct output
`NO NO NO NO YES ...` view save

user output
`0 0` view save

Test 19

Group: 3

Verdict: WRONG ANSWER

input
`1000 50 20 37 99 45 58 86 79 73 85 70 54 ...` view save

correct output
`NO NO NO NO NO ...` view save

user output
`0 0` view save

Test 20

Group: 3

Verdict: WRONG ANSWER

input
`1000 26 23 5 73 53 59 64 47 41 80 75 55 ...` view save

correct output
`NO NO NO NO NO ...` view save

user output
`0 0` view save

Datatähti 2025 alku

Kortit I

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

Tasks

Submissions (drvilepis)