CSES - Datatähti 2025 alku - Results
Submission details
Task:Robotti
Sender:Aarni.Lepisto
Submission time:2024-10-29 20:24:49 +0200
Language:C++ (C++20)
Status:READY
Result:0
Feedback
groupverdictscore
#10
#20
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2details
#2ACCEPTED0.00 s1, 2details
#3--1, 2details
#4--1, 2details
#5--1, 2details
#6ACCEPTED0.01 s1, 2details
#7--1, 2details
#8--1, 2details
#9--1, 2details
#10--1, 2details
#11ACCEPTED0.01 s1, 2details
#12--2details
#13ACCEPTED0.31 s2details
#14--2details
#15--2details
#16ACCEPTED0.32 s2details
#17ACCEPTED0.01 s2details
#18--2details
#19--2details
#20--2details
#21--2details
#22--2details
#23--2details
#24--2details

Compiler report

input/code.cpp: In function 'bool solved(std::vector<char>)':
input/code.cpp:14:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |     for(int i = 0; i < rooms.size(); i++)
      |                    ~~^~~~~~~~~~~~~~
input/code.cpp: In function 'int main()':
input/code.cpp:62:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |         for(int i = 0; i < rooms.size(); i++)
      |                        ~~^~~~~~~~~~~~~~

Code

#include<iostream>
#include<vector>
#include<cmath>
using namespace std;
//[., *, ., *, R, ., *] -> false
//[., *, ., R, ., *, .] -> true
bool solved(vector<char> rooms)
{
int before = -1;
int after = -1;
int robot = -1;
for(int i = 0; i < rooms.size(); i++)
{
if(rooms[i]=='.') continue;
if(rooms[i]=='*')
{
if(robot == -1)
{
before = i;
} else
{
after = i;
}
continue;
}
if(rooms[i]=='R')
{
robot=i;
}
}
if(before == -1 && after == -1) return true;
int distToBefore = abs(before-robot);
int distToAfter = abs(after-robot);
return distToBefore==distToAfter;
}
int main()
{
int size;
string level;
cin>>size>>level;
vector<char> rooms(level.begin(), level.end());
//Example state:
//[*, *, ., *, ., ., ., ., ., ., *, ., R, *, ., ., ., *, ., .]
int stepsTaken = 0;
int coinsCollected = 0;
while(!solved(rooms))
{
int before = -1;
int after = -1;
int robot = -1;
for(int i = 0; i < rooms.size(); i++)
{
if(rooms[i]=='.') continue;
if(rooms[i]=='*')
{
if(robot == -1)
{
before = i;
} else
{
after = i;
}
continue;
}
if(rooms[i]=='R')
{
robot=i;
}
}
int distToBefore = abs(before-robot);
int distToAfter = abs(after-robot);
if(distToBefore < distToAfter)
{
rooms[robot] = '.';
if(rooms[robot-1]=='*') coinsCollected++;
rooms[robot -1] = 'R';
stepsTaken++;
} else
{
rooms[robot] = '.';
if(rooms[robot+1]=='*') coinsCollected++;
rooms[robot +1] = 'R';
stepsTaken++;
}
}
cout<<stepsTaken<<" "<<coinsCollected;
return 0;
}

Test details

Test 1

Group: 1, 2

Verdict: ACCEPTED

input
1
R

correct output
0 0

user output
0 0

Test 2

Group: 1, 2

Verdict: ACCEPTED

input
10
...R......

correct output
0 0

user output
0 0

Test 3

Group: 1, 2

Verdict:

input
10
**.R...***

correct output
12 5

user output
(empty)

Test 4

Group: 1, 2

Verdict:

input
10
***R******

correct output
0 0

user output
(empty)

Test 5

Group: 1, 2

Verdict:

input
1000
R................................

correct output
947 9

user output
(empty)

Test 6

Group: 1, 2

Verdict: ACCEPTED

input
1000
.................................

correct output
886 9

user output
886 9

Test 7

Group: 1, 2

Verdict:

input
1000
.....*..*....**..**..*......*....

correct output
1287 400

user output
(empty)

Test 8

Group: 1, 2

Verdict:

input
1000
************.*****************...

correct output
0 0

user output
(empty)

Test 9

Group: 1, 2

Verdict:

input
1000
******************************...

correct output
0 0

user output
(empty)

Test 10

Group: 1, 2

Verdict:

input
1000
R*****************************...

correct output
999 999

user output
(empty)

Test 11

Group: 1, 2

Verdict: ACCEPTED

input
1000
******************************...

correct output
999 999

user output
999 999

Test 12

Group: 2

Verdict:

input
10000
.......**........*...........*...

correct output
10971 999

user output
(empty)

Test 13

Group: 2

Verdict: ACCEPTED

input
10000
*..*....*......*.....*..*........

correct output
9999 999

user output
9999 999

Test 14

Group: 2

Verdict:

input
10000
*.*.*...**.*...*....**.**.**.....

correct output
18766 5000

user output
(empty)

Test 15

Group: 2

Verdict:

input
10000
R*****************************...

correct output
9999 9999

user output
(empty)

Test 16

Group: 2

Verdict: ACCEPTED

input
10000
******************************...

correct output
9999 9999

user output
9999 9999

Test 17

Group: 2

Verdict: ACCEPTED

input
200000
.................................

correct output
0 0

user output
0 0

Test 18

Group: 2

Verdict:

input
200000
.................................

correct output
299934 10000

user output
(empty)

Test 19

Group: 2

Verdict:

input
200000
**.***....**..**.....***.*..*....

correct output
299998 100000

user output
(empty)

Test 20

Group: 2

Verdict:

input
200000
******************************...

correct output
0 0

user output
(empty)

Test 21

Group: 2

Verdict:

input
200000
R................................

correct output
133765 3

user output
(empty)

Test 22

Group: 2

Verdict:

input
200000
R................................

correct output
199982 5000

user output
(empty)

Test 23

Group: 2

Verdict:

input
200000
R*****************************...

correct output
199999 199999

user output
(empty)

Test 24

Group: 2

Verdict:

input
200000
******************************...

correct output
199999 199999

user output
(empty)