CSES - Datatähti 2025 alku

CSES - Datatähti 2025 alku - Results

Submission details
Task:	Robotti
Sender:	hasorez
Submission time:	2024-10-30 21:52:00 +0200
Language:	C
Status:	READY
Result:	30

Feedback
group	verdict	score
#1	ACCEPTED	30
#2	TIME LIMIT EXCEEDED	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	ACCEPTED	0.00 s	1, 2	details
#11	ACCEPTED	0.00 s	1, 2	details
#12	ACCEPTED	0.00 s	2	details
#13	ACCEPTED	0.00 s	2	details
#14	ACCEPTED	0.01 s	2	details
#15	ACCEPTED	0.01 s	2	details
#16	ACCEPTED	0.01 s	2	details
#17	ACCEPTED	0.00 s	2	details
#18	ACCEPTED	0.34 s	2	details
#19	TIME LIMIT EXCEEDED	--	2	details
#20	ACCEPTED	0.00 s	2	details
#21	ACCEPTED	0.00 s	2	details
#22	ACCEPTED	0.09 s	2	details
#23	TIME LIMIT EXCEEDED	--	2	details
#24	TIME LIMIT EXCEEDED	--	2	details

Compiler report

input/code.c: In function 'main':
input/code.c:81:11: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |     (void)scanf("%d", &huoneiden_määrä);
      |           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
input/code.c:87:5: warning: ignoring return value of 'fgets' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |     fgets(mappi, huoneiden_määrä+1, stdin);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Code

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 
int lähin_kolikkohuone(char *mappi, int robottihuone_idx, int huoneiden_määrä) {
    //printf("len(mappi_vasen): %d",robottihuone_idx+2);
    char *mappi_vasen = (char*)malloc((robottihuone_idx+2) * sizeof(*mappi_vasen));
    strncpy(mappi_vasen, mappi, robottihuone_idx+1);
    mappi_vasen[robottihuone_idx + 1] = '\0';
    //printf("mappi vasen: %s\n", mappi_vasen);
    char *vasen_lähin = strrchr(mappi_vasen, '*');
    int vasen_lähin_idx;
    if (vasen_lähin) {
        vasen_lähin_idx = vasen_lähin - mappi_vasen;
    } else {
        vasen_lähin_idx = -1;
    }
    
    //printf("len(mappi_oikea): %d\n",huoneiden_määrä-robottihuone_idx+1);
    char *mappi_oikea = (char*)malloc((huoneiden_määrä-robottihuone_idx+1)*sizeof(*mappi));
    //printf("len(mappi_oikea): %d\n",huoneiden_määrä-robottihuone_idx+1);
    //printf("start_index: %s\n",mappi+robottihuone_idx);
    //printf("end_index: %d\n",huoneiden_määrä-robottihuone_idx);
    strncpy(mappi_oikea, mappi+robottihuone_idx+1, huoneiden_määrä-robottihuone_idx);
    //printf("mappi oikea: %s\n", mappi_oikea);
    mappi_oikea[huoneiden_määrä-robottihuone_idx] = '\0';
    //printf("mappi oikea: %s\n", mappi_oikea);
    char *oikea_lähin = strchr(mappi_oikea, '*');
    int oikea_lähin_idx;
    if (oikea_lähin) {
        oikea_lähin_idx = (oikea_lähin - mappi_oikea)+robottihuone_idx+1;
    } else {
        oikea_lähin_idx = -1;
    }
    
	//printf("Vasen: %s\n", mappi_vasen);
	//printf("Oikea: %s\n", mappi_oikea);
    free(mappi_vasen);
	//printf("vasen vapautettu\n");
    free(mappi_oikea);
	//printf("Oikea vapautettu\n");
 
    int vasen_lähin_dist, oikea_lähin_dist;
    if (vasen_lähin_idx > -1) {
        vasen_lähin_dist = abs(vasen_lähin_idx-robottihuone_idx);
    } else {
        vasen_lähin_dist = -1;
    }
    if (oikea_lähin_idx > -1) {
        oikea_lähin_dist = abs(oikea_lähin_idx-robottihuone_idx);
    } else {
        oikea_lähin_dist = -1;
    }
 
    if ((oikea_lähin_dist != -1) && (vasen_lähin_dist != -1)) {
        if (oikea_lähin_dist == vasen_lähin_dist) {
            return -1;
        }
        if (oikea_lähin_dist < vasen_lähin_dist) {
            return oikea_lähin_idx;
        } 
        else {
            return vasen_lähin_idx;
        }
    }
    
    if ((oikea_lähin_dist != -1) && (vasen_lähin_dist == -1)) {
        return oikea_lähin_idx;
    }
 
    if ((vasen_lähin_dist != -1) && (oikea_lähin_dist == -1)) {
        return vasen_lähin_idx;
    }
 
    return -1;
}
 
int main () {
    unsigned int askeleet, kolikot;
    int huoneiden_määrä;
    (void)scanf("%d", &huoneiden_määrä);
    int c;
    do{
        c = getchar();
    }while(c != EOF && c != '\n');
    char *mappi = (char*)malloc((huoneiden_määrä + 2) * sizeof(*mappi));
    fgets(mappi, huoneiden_määrä+1, stdin);
    mappi[huoneiden_määrä + 2] = '\0';
	//printf("%s", mappi);
 
    char *robottihuone;
    int robottihuone_idx, kolikkohuone_idx;
    kolikot = 0;
    askeleet = 0;
 
    while (1) {
        robottihuone = strchr(mappi, 'R');
        robottihuone_idx = (int)(robottihuone-mappi);
        kolikkohuone_idx = lähin_kolikkohuone(mappi, robottihuone_idx, huoneiden_määrä);
        if (kolikkohuone_idx == -1) {
            break;
        }
        askeleet = askeleet + abs(kolikkohuone_idx-robottihuone_idx);
        kolikot++;
        mappi[robottihuone_idx] = '.';
        mappi[kolikkohuone_idx] = 'R';
        
        // Debugging output to trace mappi after each step
        //printf("After move: %s\n", mappi);
        // printf("Steps: %d, Coins: %d\n", askeleet, kolikot);
    }
    printf("%d %d\n", askeleet, kolikot);
    free(mappi);
    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: ACCEPTED

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

correct output
`999 999` view save

user output
`999 999` view save

Test 11

Group: 1, 2

Verdict: ACCEPTED

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

correct output
`999 999` view save

user output
`999 999` view save

Test 12

Group: 2

Verdict: ACCEPTED

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

correct output
`10971 999` view save

user output
`10971 999` view save

Test 13

Group: 2

Verdict: ACCEPTED

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

correct output
`9999 999` view save

user output
`9999 999` view save

Test 14

Group: 2

Verdict: ACCEPTED

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

correct output
`18766 5000` view save

user output
`18766 5000` view save

Test 15

Group: 2

Verdict: ACCEPTED

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

correct output
`9999 9999` view save

user output
`9999 9999` view save

Test 16

Group: 2

Verdict: ACCEPTED

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

correct output
`9999 9999` view save

user output
`9999 9999` 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: ACCEPTED

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

correct output
`299934 10000` view save

user output
`299934 10000` 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: ACCEPTED

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

correct output
`199982 5000` view save

user output
`199982 5000` view save

Test 23

Group: 2

Verdict: TIME LIMIT EXCEEDED

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

correct output
`199999 199999` view save

user output
(empty)

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 (hasorez)