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  1. #include <bits/stdc++.h>
  2. #define ll long long
  3. #define all(x) x.begin(), x.end()
  4. #define endl '\n'
  5. using namespace std;
  6. //the accepted call me.
  7.  
  8. void solve() {
  9. 	ios::sync_with_stdio(false);
  10. 	cin.tie(nullptr);
  11. 	//freopen("input.txt","r",stdin);
  12. 	//freopen("output.txt","w",stdout);
  13. 	string s1,s2;
  14. 	cin>>s1>>s2;
  15. 	int count1=0,count2=0;
  16. 	for(int i=0;i<s1.length();i++) {
  17. 		if (s1[i]!=s2[i]) {
  18. 			count1++;
  19. 		}
  20. 	}
  21. 	for(int i=0;i<s2.length();i++) {
  22. 		if (s1[i]!=s2[i]) {
  23. 			count2++;
  24. 		}
  25. 	}
  26. 	reverse(s2.begin(),s2.end());
  27. 	if (s1==s2) {
  28. 		cout<<s1.size()/2<<endl;
  29. 		return;
  30. 	}
  31. 	cout<<min(count1,count2)<<endl;
  32.  
  33. }
  34. int main() {
  35.  
  36. 	solve();
  37.  
  38. }
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/q8KIU4
language:
C++ (gcc 8.3)
created:
2 hours ago
visibility:
public

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