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  1. #include <iostream>
  2.  
  3. std::string coder(std::string &in, int n){
  4. 	std::string out = "";
  5. 	int i=0, j=0, shift, maxShift, totalShift = 0;
  6. 	bool flague = true;
  7.  
  8. 	if(n==1) {
  9. 		return in;
  10. 	}
  11. 	else{
  12. 		maxShift = 2*n-2;
  13. 		while(i<n){
  14. 			shift = (!i || i==n-1) ? maxShift : 2*(n-i-1);
  15. 			out += in[i];
  16. 			flague = true;
  17. 			totalShift = i;
  18. 			while(totalShift<in.length()){
  19. 				totalShift += (flague) ? shift : 2*i;
  20. 				if(((flague) ? shift : 2*i) && totalShift < in.length())
  21. 					out += in[totalShift];
  22.  
  23. 				flague = !flague;
  24. 			}
  25. 			++i;
  26. 		}
  27. 		return out;
  28. 	}
  29. }
  30.  
  31. int main(){
  32. 	std::ios::sync_with_stdio(false);
  33. 	int t, n;
  34. 	std::string in;
  35. 	std::cin>>t;
  36. 	while(t--){
  37. 		std::cin>>in>>n;
  38. 		std::cout<<coder(in,n)<<std::endl;
  39. 	}
  40. 	return 0;
  41. }
Success #stdin #stdout 0s 3468KB
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stdin
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2
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
WA 7
stdout
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
WALOQB
https://ideone.com/brKbvx
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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