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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4. #include <algorithm>
  5.  
  6. using namespace std;
  7.  
  8. int main() {
  9.     string s;
  10. 	cin >> s;
  11.  
  12. 	long long len = 0;
  13. 	for (char ch : s) {
  14. 		if (ch >= '1' && ch <= '9') 
  15. 			len *= ch - '0';
  16. 		else 
  17. 			++len;	
  18. 	}
  19.  
  20. 	long long k;
  21. 	cin >> k;
  22. 	reverse(s.begin(), s.end());
  23. 	for (char ch : s) {
  24. 		if (ch >= '1' && ch <= '9') {
  25. 			len /= ch - '0';
  26.             k %= len;
  27. 		} else {
  28.      		if (k+1 == len) { cout << ch; break; }
  29. 			--len;	
  30. 		}        
  31. 	}
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 15232KB
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https://ideone.com/l8JxdQ
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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