Submission #3791922

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Source Code Expand

#include <algorithm>
#include <bitset>
#include <cmath>
#include <cstring>
#include <deque>
#include <functional>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stdlib.h>
#include <string>
#include <utility>
#include <vector>
#define rep(i, n) for (int i = 0; i < (n); i++)
#define loop(i, x, n) for (int i = (x); i < (n); i++)
#define all(v) (v).begin(), (v).end()
#define int long long
using namespace std;
const int MOD = 1e9 + 7;
const int INF = 1e9;
template<typename T> void cmax(T &a, T b) { a = max(a, b); }
template<typename T> void cmin(T &a, T b) { a = min(a, b); }

signed main() {
  int n;
  cin >> n;
  vector<int> a(n);
  rep(i, n) cin >> a[i];
  int ans = 0;
  rep(i, n - 1) if (a[i] != -1 && a[i] == a[i + 1]) {
    ans++;
    a[i + 1] = -1;
  }
  cout << ans << endl;
  return 0;
}

Submission Info

Judge Result