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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. typedef long long iint;
  4.  
  5. int main() {
  6. string s;
  7. cin >> s;
  8. string tmp = "";
  9. int streak = 0;
  10. int maxstreak = 0;
  11. // ATTCG
  12. for (char c : s) {
  13. if (tmp == "") {
  14. tmp += c;
  15. streak++;
  16. } else {
  17. string temp = "" + c;
  18. if (temp == tmp) {
  19. streak++;
  20. maxstreak = max(streak, maxstreak);
  21. } else {
  22. streak = 1;
  23. tmp = temp;
  24. }
  25.  
  26. }
  27. }
  28. cout << maxstreak;
  29. }
Success #stdin #stdout 0.01s 5324KB
stdin
A
stdout
Standard output is empty