Submission #3400265

---

Source Code Expand

#include <iostream>
#include <vector>
using namespace std;

int N;
vector<int> a;

int main() {
  cin >> N;
  a.resize(N); for (int i = 0; i < N; ++i) cin >> a[i];
  
  int res = 0;
  for (int i = 1; i < N; ++i) {
    if (a[i] == a[i-1]) {
      a[i] = -1;
      ++res;
    }
  }
  cout << res << endl;
}   

Submission Info

Judge Result