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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. void executeTime() {
  5.     cerr << "Time Taken: " << (float)clock() / CLOCKS_PER_SEC << " secs";
  6. }
  7.  
  8. int main() {
  9.  
  10.  
  11.     int n, k; cin >> n >> k;
  12.     string s; cin >> s;
  13.  
  14.     multiset<char> ms;
  15.  
  16.     int i = 0, ans = 0;
  17.  
  18.     //two pointer template
  19.  
  20.     //expanding
  21.     for (int j = 0; j < n; j++) {
  22.         ms.insert(s[j]);
  23.  
  24.         // shrinking
  25.         while (i <= j && *(--ms.end()) - *ms.begin() > k) {
  26.             ms.erase(ms.find(s[i]));
  27.             i++;
  28.         }
  29.  
  30.         ans = max(ans, j - i + 1);
  31.     }
  32.  
  33.     cout << ans << endl;
  34.  
  35.     executeTime();
  36.     return 0;
  37. }
Success #stdin #stdout #stderr 0.01s 5280KB
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stdin
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10 2
abcdeabade
stdout
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3
stderr
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Time Taken: 0.005601 secs
https://ideone.com/bwGbzC
language:
C++14 (gcc 8.3)
created:
6 hours ago
visibility:
public

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