CSES - Datatähti 2025 alku

CSES - Datatähti 2025 alku - Results

Submission details
Task:	Robotti
Sender:	-=SharpS=-
Submission time:	2024-10-28 17:20:34 +0200
Language:	C
Status:	READY
Result:	0

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

Test results
test	verdict	time	group
#1	ACCEPTED	0.00 s	1, 2	details
#2	ACCEPTED	0.00 s	1, 2	details
#3	ACCEPTED	0.00 s	1, 2	details
#4	ACCEPTED	0.00 s	1, 2	details
#5	ACCEPTED	0.00 s	1, 2	details
#6	ACCEPTED	0.00 s	1, 2	details
#7	ACCEPTED	0.00 s	1, 2	details
#8	ACCEPTED	0.00 s	1, 2	details
#9	ACCEPTED	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	0.01 s	2	details
#13	WRONG ANSWER	0.01 s	2	details
#14	WRONG ANSWER	0.02 s	2	details
#15	WRONG ANSWER	0.00 s	2	details
#16	WRONG ANSWER	0.04 s	2	details
#17	ACCEPTED	0.00 s	2	details
#18	WRONG ANSWER	0.84 s	2	details
#19	TIME LIMIT EXCEEDED	--	2	details
#20	ACCEPTED	0.00 s	2	details
#21	ACCEPTED	0.00 s	2	details
#22	WRONG ANSWER	0.44 s	2	details
#23	WRONG ANSWER	0.00 s	2	details
#24	TIME LIMIT EXCEEDED	--	2	details

Compiler report

input/code.c: In function 'main':
input/code.c:49:5: warning: ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |     fgets(jou, 100, stdin);
      |     ^~~~~~~~~~~~~~~~~~~~~~
input/code.c:53:5: warning: ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]
   53 |     fgets(room_buffer, roomc+1, stdin);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Code

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>

uint64_t get_ri(const char* rooms) {
    uint64_t pos = 0;
    for (uint64_t i = 0; i < strlen(rooms); i++) {
        if (rooms[i] == 'R') {
            pos = i;
            break;
        }
    }
    return pos;
}

void get_left_right(const char* rooms, uint64_t* leftP, uint64_t* rightP, uint64_t ri) {
    *leftP = 0;
    *rightP = 0;

    for (uint64_t i = ri; i > 0; i--) {
        if (rooms[i] == '*') {
            *leftP = i;
            break;
        }
    }

    for (uint64_t i = ri; i < strlen(rooms); i++) {
        if (rooms[i] == '*') {
            *rightP = i;
            break;
        }
    }
}

void get_distance_lr(uint64_t leftP, uint64_t rightP, uint64_t* out_distanceL, uint64_t* out_distanceR, uint64_t ri) {
    *out_distanceL = ri - leftP;
    *out_distanceR = rightP - ri;
}

void move_to(char* rooms, uint64_t* ri, uint64_t to) {
    rooms[*ri] = '.';
    rooms[to] = 'R';
    *ri = to;
}

int main() {
    char jou[100];
    fgets(jou, 100, stdin);

    uint64_t roomc = atol(jou);
    char* room_buffer = malloc(roomc * sizeof(char)+1);
    fgets(room_buffer, roomc+1, stdin);
    uint64_t robot_index = get_ri(room_buffer);
    long coins_collected = 0;
    uint64_t distance = 0;

    uint64_t leftP;
    uint64_t rightP;
    uint64_t distance_left;
    uint64_t distance_right;
loop:

    get_left_right(room_buffer, &leftP, &rightP, robot_index);
    if (leftP == 0 && rightP == 0) goto halt;

    get_distance_lr(leftP, rightP, &distance_left, &distance_right, robot_index);
    
    if (distance_left == 0) {
        goto move_right;
    }
    else if (distance_right == 0) {
        goto move_left;
    }
    else if (distance_left < distance_right) {
        goto move_left;
    }
    else if (distance_right < distance_left) {
        goto move_right;
    }
    else {
        goto halt;
    }

move_left:

    move_to(room_buffer, &robot_index, leftP);
    coins_collected++;
    distance = distance + distance_left;
    goto loop;

move_right:

    move_to(room_buffer, &robot_index, rightP);
    coins_collected++;
    distance = distance + distance_right;
    goto loop;

halt:

    printf("%lu %li\n", distance, coins_collected);
    return 0;
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
`1 R` view save

correct output
`0 0` view save

user output
`0 0` view save

Test 2

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`0 0` view save

user output
`0 0` view save

Test 3

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`12 5` view save

user output
`12 5` view save

Test 4

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`0 0` view save

user output
`0 0` view save

Test 5

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`947 9` view save

user output
`947 9` view save

Test 6

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`886 9` view save

user output
`886 9` view save

Test 7

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`1287 400` view save

user output
`1287 400` view save

Test 8

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`0 0` view save

user output
`0 0` view save

Test 9

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`0 0` view save

user output
`0 0` view save

Test 10

Group: 1, 2

Verdict: WRONG ANSWER

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

correct output
`999 999` view save

user output
`1 1` view save

Test 11

Group: 1, 2

Verdict: WRONG ANSWER

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

correct output
`999 999` view save

user output
`998 998` view save

Test 12

Group: 2

Verdict: WRONG ANSWER

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

correct output
`10971 999` view save

user output
`10985 1000` view save

Test 13

Group: 2

Verdict: WRONG ANSWER

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

correct output
`9999 999` view save

user output
`9996 998` view save

Test 14

Group: 2

Verdict: WRONG ANSWER

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

correct output
`18766 5000` view save

user output
`18764 4999` view save

Test 15

Group: 2

Verdict: WRONG ANSWER

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

correct output
`9999 9999` view save

user output
`1 1` view save

Test 16

Group: 2

Verdict: WRONG ANSWER

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

correct output
`9999 9999` view save

user output
`9998 9998` view save

Test 17

Group: 2

Verdict: ACCEPTED

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

correct output
`0 0` view save

user output
`0 0` view save

Test 18

Group: 2

Verdict: WRONG ANSWER

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

correct output
`299934 10000` view save

user output
`300024 10001` view save

Test 19

Group: 2

Verdict: TIME LIMIT EXCEEDED

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

correct output
`299998 100000` view save

user output
(empty)

Test 20

Group: 2

Verdict: ACCEPTED

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

correct output
`0 0` view save

user output
`0 0` view save

Test 21

Group: 2

Verdict: ACCEPTED

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

correct output
`133765 3` view save

user output
`133765 3` view save

Test 22

Group: 2

Verdict: WRONG ANSWER

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

correct output
`199982 5000` view save

user output
`200194 5001` view save

Test 23

Group: 2

Verdict: WRONG ANSWER

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

correct output
`199999 199999` view save

user output
`1 1` view save

Test 24

Group: 2

Verdict: TIME LIMIT EXCEEDED

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

correct output
`199999 199999` view save

user output
(empty)

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 (-=SharpS=-)