CSES - Datatähti 2025 alku - Results
Submission details
Task:Robotti
Sender:MikaelM
Submission time:2024-11-06 23:40:26 +0200
Language:C++ (C++17)
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED30
#2ACCEPTED70
Test results
testverdicttimegroup
#1ACCEPTED0.00 s1, 2details
#2ACCEPTED0.00 s1, 2details
#3ACCEPTED0.00 s1, 2details
#4ACCEPTED0.00 s1, 2details
#5ACCEPTED0.00 s1, 2details
#6ACCEPTED0.00 s1, 2details
#7ACCEPTED0.00 s1, 2details
#8ACCEPTED0.00 s1, 2details
#9ACCEPTED0.00 s1, 2details
#10ACCEPTED0.00 s1, 2details
#11ACCEPTED0.01 s1, 2details
#12ACCEPTED0.00 s2details
#13ACCEPTED0.00 s2details
#14ACCEPTED0.00 s2details
#15ACCEPTED0.00 s2details
#16ACCEPTED0.00 s2details
#17ACCEPTED0.01 s2details
#18ACCEPTED0.01 s2details
#19ACCEPTED0.01 s2details
#20ACCEPTED0.01 s2details
#21ACCEPTED0.01 s2details
#22ACCEPTED0.01 s2details
#23ACCEPTED0.01 s2details
#24ACCEPTED0.01 s2details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:46:52: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
   46 |             int dl = p - l.top(), dr = r.front() - p;
      |                                                    ^

Code

#include <bits/stdc++.h>
using namespace std;
#define all(x) x.begin(),x.end()
using ll = long long;


int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    
    int n;
    cin >> n;

    stack<int> l;
    queue<int> r;
    bool b = false;
    int p;
    for (int i = 1; i <= n; i++) {
        char c;
        cin >> c;
        if (c == 'R') {
            p = i;
            b = true;
        }
        else if (c == '*') {
            if (b) r.push(i);
            else l.push(i);
        }
    }

    int a = 0, k = 0;
    while (true) {
        if (l.empty() && r.empty()) break;
        if (l.empty()) {
            a += r.front() - p;
            p = r.front();
            r.pop();
            k++;
        }
        else if (r.empty()) {
            a += p - l.top();
            p = l.top();
            l.pop();
            k++;
        }
        else {
            int dl = p - l.top(), dr = r.front() - p;
            if (dl == dr) break;
            else if (dl < dr) {
                a += dl;
                p = l.top();
                l.pop();
                k++;
            }
            else {
                a += dr;
                p = r.front();
                r.pop();
                k++;
            }
        }

    }

    cout << a << " " << k << "\n";

}

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: ACCEPTED

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

correct output
12 5

user output
12 5

Test 4

Group: 1, 2

Verdict: ACCEPTED

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

correct output
0 0

user output
0 0

Test 5

Group: 1, 2

Verdict: ACCEPTED

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

correct output
947 9

user output
947 9

Test 6

Group: 1, 2

Verdict: ACCEPTED

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

correct output
886 9

user output
886 9

Test 7

Group: 1, 2

Verdict: ACCEPTED

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

correct output
1287 400

user output
1287 400

Test 8

Group: 1, 2

Verdict: ACCEPTED

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

correct output
0 0

user output
0 0

Test 9

Group: 1, 2

Verdict: ACCEPTED

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

correct output
0 0

user output
0 0

Test 10

Group: 1, 2

Verdict: ACCEPTED

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

correct output
999 999

user output
999 999

Test 11

Group: 1, 2

Verdict: ACCEPTED

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

correct output
999 999

user output
999 999

Test 12

Group: 2

Verdict: ACCEPTED

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

correct output
10971 999

user output
10971 999

Test 13

Group: 2

Verdict: ACCEPTED

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

correct output
9999 999

user output
9999 999

Test 14

Group: 2

Verdict: ACCEPTED

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

correct output
18766 5000

user output
18766 5000

Test 15

Group: 2

Verdict: ACCEPTED

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

correct output
9999 9999

user output
9999 9999

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: ACCEPTED

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

correct output
299934 10000

user output
299934 10000

Test 19

Group: 2

Verdict: ACCEPTED

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

correct output
299998 100000

user output
299998 100000

Test 20

Group: 2

Verdict: ACCEPTED

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

correct output
0 0

user output
0 0

Test 21

Group: 2

Verdict: ACCEPTED

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

correct output
133765 3

user output
133765 3

Test 22

Group: 2

Verdict: ACCEPTED

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

correct output
199982 5000

user output
199982 5000

Test 23

Group: 2

Verdict: ACCEPTED

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

correct output
199999 199999

user output
199999 199999

Test 24

Group: 2

Verdict: ACCEPTED

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

correct output
199999 199999

user output
199999 199999