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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main(){
  6.  
  7. 	string line1, line2;
  8. 	cin >> line1 >> line2;
  9. 	int placed = 0;
  10.  
  11. 	int leftSide = 0, rightSide = line1.length()-1;
  12.  
  13. 	while(true){
  14. 		//cout << leftSide << endl;
  15. 		if(leftSide == rightSide){
  16. 			break;
  17. 		}
  18. 		if(line1[leftSide] == 'X' && line2[leftSide] == 'X'){
  19. 			leftSide++;
  20. 		}
  21. 		else if(line1[leftSide] == '0' && line2[leftSide] == '0'){
  22. 			if(line1[leftSide+1] == '0'){
  23. 				line1.replace(leftSide+1,1,string(1,'X'));
  24. 				leftSide++;
  25. 				placed++;
  26. 			}else if(line2[leftSide+1] == '0'){
  27. 				line2.replace(leftSide+1,1,string(1,'X'));
  28. 				leftSide++;
  29. 				placed++;
  30. 			}
  31. 			else{
  32. 				leftSide++;
  33. 			}
  34. 		}
  35. 		else if(line1[leftSide+1] == '0' && line2[leftSide+1] == '0'){
  36. 			if(line1[leftSide] == '0'){
  37. 				line1.replace(leftSide+1,1,string(1,'X'));
  38. 				line2.replace(leftSide+1,1,string(1,'X'));
  39. 				leftSide++;
  40. 				placed++;
  41. 			}else if(line2[leftSide] == '0'){
  42. 				line1.replace(leftSide+1,1,string(1,'X'));
  43. 				line2.replace(leftSide+1,1,string(1,'X'));
  44. 				leftSide++;
  45. 				placed++;
  46. 			}
  47. 			else{
  48. 				leftSide++;
  49. 			}
  50. 		}
  51. 		else{
  52. 			leftSide++;
  53. 		}
  54. 	}
  55. 	cout << placed << endl;
  56.  
  57. 	return 0;
  58. }
  59.  
  60.  
Success #stdin #stdout 0s 4540KB
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stdin
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0X0X0
0X0X0
stdout
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0
https://ideone.com/SQWl0I
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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