CSES - Datatähti 2025 alku

Submission details
Task:	Robotti
Sender:	OnniHak
Submission time:	2024-10-28 18:39:36 +0200
Language:	C++ (C++17)
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	0.01 s	1, 2	details
#8	ACCEPTED	0.00 s	1, 2	details
#9	ACCEPTED	0.00 s	1, 2	details
#10	ACCEPTED	0.01 s	1, 2	details
#11	ACCEPTED	0.01 s	1, 2	details
#12	ACCEPTED	0.04 s	2	details
#13	ACCEPTED	0.04 s	2	details
#14	ACCEPTED	0.28 s	2	details
#15	ACCEPTED	0.30 s	2	details
#16	ACCEPTED	0.36 s	2	details
#17	ACCEPTED	0.01 s	2	details
#18	TIME LIMIT EXCEEDED	--	2	details
#19	TIME LIMIT EXCEEDED	--	2	details
#20	ACCEPTED	0.01 s	2	details
#21	ACCEPTED	0.02 s	2	details
#22	TIME LIMIT EXCEEDED	--	2	details
#23	TIME LIMIT EXCEEDED	--	2	details
#24	TIME LIMIT EXCEEDED	--	2	details

Compiler report

input/code.cpp: In function 'int countCoins(const string&)':
input/code.cpp:35:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     for (int i=0; i<series.size(); i++) {
      |                   ~^~~~~~~~~~~~~~
input/code.cpp: In function 'std::vector<int> getCharIdxs(const string&, char)':
input/code.cpp:44:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for (int i=0; i<series.size(); i++) {
      |                   ~^~~~~~~~~~~~~~
input/code.cpp: In function 'std::vector<int> getStepsClosestCoinIdx(const string&, int)':
input/code.cpp:59:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 |     for (int i=1; i<coin...

Code

#include <iostream>
#include <string>
#include <vector>

int getDistance(int idx1, int idx2);

int countCoins(const std::string& series); // carrots taste good ¯\_(ツ)_/¯

std::vector<int> getCharIdxs(const std::string& series, const char carrot); 

std::vector<int> getStepsClosestCoinIdx(const std::string& series, int robotPos);

std::vector<int> getStepsCoins(std::string& roomSeries);

int main() {
    int roomAmount;
    std::string roomSeries;

    std::cin >> roomAmount;
    std:: cin >> roomSeries;

    std::vector<int> stepsCoins = getStepsCoins(roomSeries);

    std::cout << stepsCoins.at(0) << " " << stepsCoins.at(1);

    return 0;
}

int getDistance(int idx1, int idx2) {
    return abs(idx2 - idx1);
}

int countCoins(const std::string& series) {
    int count = 0;
    for (int i=0; i<series.size(); i++) {
        if (series[i] == '*') count++;
    }
    return count;
}

std::vector<int> getCharIdxs(const std::string& series, const char carrot) {
    std::vector<int> carrotIndexes;

    for (int i=0; i<series.size(); i++) {
        if (series[i] == carrot) carrotIndexes.push_back(i);
    }

    return carrotIndexes;
}

std::vector<int> getStepsClosestCoinIdx(const std::string& series, int robotIdx) {
    int shortestDistance, distance, closestCoinIdx;
    std::vector<int> coinIdxs;

    coinIdxs = getCharIdxs(series, '*');
    closestCoinIdx = coinIdxs.at(0);
    shortestDistance = getDistance(robotIdx, closestCoinIdx);

    for (int i=1; i<coinIdxs.size(); i++) {
        distance = getDistance(robotIdx, coinIdxs.at(i));
        if (distance < shortestDistance) {
            closestCoinIdx = coinIdxs.at(i);
            shortestDistance = distance;
        } else if (distance == shortestDistance) {
            return {shortestDistance, closestCoinIdx, i};
        }
    }

    return {shortestDistance, closestCoinIdx};
}

std::vector<int> getStepsCoins(std::string& roomSeries) {
    int steps=0, gatheredCoins=0, robotIdx, coinIdx;

    int coinsTotalAmount = countCoins(roomSeries);

    robotIdx = getCharIdxs(roomSeries, 'R').at(0);

    std::vector<int> stepsCoinIdx;

    for (int i=0; i<coinsTotalAmount; i++) {
        stepsCoinIdx = getStepsClosestCoinIdx(roomSeries, robotIdx);

        if (stepsCoinIdx.size() > 2) break;

        steps += stepsCoinIdx.at(0);
        coinIdx = stepsCoinIdx.at(1);
        gatheredCoins++;

        if (gatheredCoins >= coinsTotalAmount) break;

        roomSeries[coinIdx] = 'R';
        roomSeries[robotIdx] = '.';
        robotIdx = coinIdx;
    } 

    return {steps, gatheredCoins};
}



// *..*...R.*..*.

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: TIME LIMIT EXCEEDED

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

correct output
`299934 10000` view save

user output
(empty)

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: TIME LIMIT EXCEEDED

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

correct output
`199982 5000` view save

user output
(empty)

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 (OnniHak)