CSES - Datatähti 2025 alku - Results
Submission details
Task:Robotti
Sender:fatihmerickoc
Submission time:2024-10-28 14:45:51 +0200
Language:C++ (C++11)
Status:COMPILE ERROR

Compiler report

input/code.cpp: In function 'std::pair<int, int> solve(std::string&)':
input/code.cpp:20:5: error: 'vector' was not declared in this scope
   20 |     vector<int> left_paralar, right_paralar;
      |     ^~~~~~
input/code.cpp:11:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
   10 | #include <algorithm>
  +++ |+#include <vector>
   11 | using namespace std;
input/code.cpp:20:12: error: expected primary-expression before 'int'
   20 |     vector<int> left_paralar, right_paralar;
      |            ^~~
input/code.cpp:24:17: error: 'left_paralar' was not declared in this scope
   24 |                 left_paralar.push_back(i);
      |                 ^~~~~~~~~~~~
input/code.cpp:26:17: error: 'right_paralar' was not declared in this scope
   26 |                 right_paralar.push_back(i);
      |                 ^~~~~~~~~~~~~
input/code.cpp:32:13: error: 'left_paralar' was not declared in this scope
   32 |     reverse(left_paralar.begin(),...

Code

//
//  main.cpp
//  mainCode
//
//  Created by Fatih Meric Koc on 28.10.2024.
//

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

pair<int, int> solve(string& s) {
    int n = s.length();
    int robot_pozisyon = s.find('R');
    int adimlar = 0;
    int paralar = 0;
    
    // Store coin positions in vectors (left and right of robot)
    vector<int> left_paralar, right_paralar;
    for (int i = 0; i < n; i++) {
        if (s[i] == '*') {
            if (i < robot_pozisyon) {
                left_paralar.push_back(i);
            } else {
                right_paralar.push_back(i);
            }
        }
    }
    
    // Reverse left_paralar to process from closest to farthest
    reverse(left_paralar.begin(), left_paralar.end());
    
    // Indices for tracking current closest paralar
    int left_idx = 0;
    int right_idx = 0;
    
    while (true) {
        // Get distances to closest paralar on both sides
        int left_dist = (left_idx < left_paralar.size()) ?
            robot_pozisyon - left_paralar[left_idx] : n;
        int right_dist = (right_idx < right_paralar.size()) ?
            right_paralar[right_idx] - robot_pozisyon : n;
        
        // No more paralar
        if (left_dist == n && right_dist == n) {
            break;
        }
        
        // Equal distance paralar - ambiguous case
        if (left_dist == right_dist) {
            break;
        }
        
        // Move to closest coin
        if (left_dist < right_dist) {
            adimlar += left_dist;
            robot_pozisyon = left_paralar[left_idx];
            left_idx++;
        } else {
            adimlar += right_dist;
            robot_pozisyon = right_paralar[right_idx];
            right_idx++;
        }
        
        paralar++;
    }
    
    return {adimlar, paralar};
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    
    int n;
    string s;
    cin >> n >> s;
    
    pair<int, int> result = solve(s);
    cout << result.first << " " << result.second << "\n";
    
    return 0;
}