Saleh127

CF 1437B

Oct 27th, 2020
70
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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4. #define test int t; cin>>t; for(int cs=1;cs<=t;cs++)
  5. int main()
  6. {
  7. ios_base::sync_with_stdio(0);
  8. cin.tie(0);cout.tie(0);
  9.  
  10. test
  11. {
  12.  
  13. ll c,d,e,f,i,j,k=0,l=0;
  14. string a;
  15. cin>>c>>a;
  16. for(i=1;i<c;i++)
  17. {
  18. if(a[i]==a[i-1]) k++;
  19. }
  20. cout<<(k+1)/2<<endl;
  21. }
  22.  
  23.  
  24. return 0;
  25. }
  26.  
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