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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #pragma region Macros
  5. #define Faster ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
  6. #define ll long long
  7. #define ld long double
  8. #define pii pair<int, int>
  9. #define pll pair<long long, long long>
  10. #define all(x) x.begin(), x.end()
  11. #define rall(x) x.rbegin(), x.rend()
  12. #define pb push_back
  13. #define ff first
  14. #define ss second
  15. #define endl '\n'
  16. #define yes cout << "YES" << endl
  17. #define no cout << "NO" << endl
  18. #define m1 cout << -1 << endl
  19. #pragma endregion
  20.  
  21. #pragma region Math
  22. const ll MOD = 1e9 + 7;
  23. ll gcd(ll a, ll b) { return __gcd(a, b); }
  24. ll lcm(ll a, ll b) { return (a / gcd(a, b)) * b; }
  25. #pragma endregion
  26.  
  27. void solve() {
  28.     int n;  cin>>n;
  29.     string s;   cin>>s;
  30.     int ans=n-1, cnt=0;
  31.  
  32.     for(int i=2;i<n;i++){
  33.         if(s[i-2]==s[i]){
  34.         	if(cnt<2)
  35.             	cnt+=2;
  36.             else cnt++;
  37.         }
  38.  
  39.         else {
  40.             if(cnt>1)
  41.                 ans-=cnt-1;
  42.             cnt=0;
  43.         }
  44.     }
  45.     if(cnt>1)   ans-=cnt-1;
  46.     cout<<ans<<endl;
  47. }
  48.  
  49. int main() {
  50.     Faster;
  51.     int t = 1;
  52.     cin >> t;
  53.     while (t--) solve();
  54.     return 0;
  55. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
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7
6
aaabcc
10
aaaaaaaaaa
6
abcdef
7
abacaba
6
cccfff
4
abba
5
ababa
stdout
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4
1
5
3
3
3
1
https://ideone.com/RzkeC6
language:
C++ (gcc 8.3)
created:
21 hours ago
visibility:
public

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