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  1. /*
  2. 	Coder: __turing__
  3. 	Tran Van Nam - Chuyen Tin Nguyen Trai High School - Quang Binh
  4. */
  5. #include <bits/stdc++.h>
  6. using namespace std;
  7.  
  8. #define file(name) if (fopen(name".INP", "r")){freopen(name".INP", "r", stdin); freopen(name".OUT", "w", stdout);}
  9.  
  10. int p = 0;
  11. char Stack[10000007];
  12.  
  13. signed main(){
  14. 	ios_base::sync_with_stdio(0);
  15. 	cin.tie(0); cout.tie(0);
  16.  
  17. 	file("TEST");
  18.  
  19. 	string s; int k;
  20. 	cin >> s >> k;
  21. 	for (int i = 0; i < (int)s.length(); i++)
  22. 		if (p == 0) Stack[++p] = s[i];
  23. 		else{
  24. 			while (p > 0 && k > 0 && Stack[p] < s[i]) p--, k--;
  25. 			Stack[++p] = s[i];
  26. 		}
  27. 	while (p > 0 && k > 0) p--, k--;
  28. 	string ans = "";
  29. 	for (int i = 1; i <= p; i++) ans += Stack[i];
  30. 	p = 0;
  31. 	while (p < (int)ans.length()-1 && ans[p] == '0') p++;
  32. 	for (; p < (int)ans.length(); p++) cout << ans[p];
  33.  
  34. 	return 0^0;
  35. }
Success #stdin #stdout 0.01s 5436KB
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https://ideone.com/dWxv1S
language:
C++ (gcc 8.3)
created:
282 days ago
visibility:
secret

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