fork download
copy 
  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. int traffico(long N, vector<int>S) {
  7.     int cambia = 0;
  8.     vector<int> ricordaS(N);
  9.  
  10.     for (int i = 0; i < N; i++) {
  11.         ricordaS[i] = S[i];
  12.     }
  13.  
  14.     for (int i = 1; i < N; i++) {
  15.         if (S[i] % 2 == S[i - 1] % 2) {
  16.             cambia++;
  17.             S[i]++;
  18.         }
  19.     }
  20.  
  21.     int ricordaicambi = cambia;
  22.     cambia = 0;
  23.  
  24.     for (int i = N - 1; i > 0; i--) {
  25.         if (ricordaS[i] % 2 == ricordaS[i - 1] % 2) {
  26.             cambia++;
  27.             ricordaS[i - 1]++;
  28.         }
  29.     }
  30.  
  31.     if (ricordaicambi < cambia) {
  32.         cambia = ricordaicambi;
  33.     }
  34.  
  35.     return cambia;
  36. }
  37. int main() {
  38.     int N;
  39.     cin >> N;
  40.     vector<int> S(N);
  41.  
  42.     for (int i = 0; i < N; i++) {
  43.         cin >> S[i];
  44.     }
  45.  
  46.     cout << traffico(N, S) << endl;
  47.  
  48.     return 0;
  49. }
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
copy 
7
1 2 1 2 2 1 2
stdout
copy 
3
https://ideone.com/CLhBAY
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!