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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. typedef long long int ll;
  4. typedef long double ld;
  5. #define rep(i,a,b)  for(ll i=a;i<b;i++)
  6. #define nl cout<<endl
  7.  
  8. #define pii pair<ll,ll>
  9. #define vi  vector<ll>
  10. #define vii vector<pii>
  11. #define mi  map<ll,ll>
  12. #define all(a)  (a).begin(),(a).end()
  13.  
  14. #define pb push_back
  15. #define ff first
  16. #define ss second
  17. #define hell 1000000007
  18.  
  19. #define test4(x,y,z,a) cout<<"x is "<<x<<"		y is "<<y<<"		z is "<<z<<"		a is "<<a<<endl;
  20. #define test3(x,y,z) cout<<"x is "<<x<<"		y is "<<y<<"		z is "<<z<<endl;
  21. #define test2(x,y) cout<<"x is "<<x<<"		y is "<<y<<endl;
  22. #define test1(x) cout<<"x is "<<x<<endl;
  23. #define N 300009
  24.  
  25. ll power(ll a,ll b,ll m)
  26. {
  27. 	ll ans=1;
  28. 	while(b)
  29. 	{
  30. 		if(b&1)
  31. 			ans=(ans*a)%m;
  32. 		b/=2;
  33. 		a=(a*a)%m;
  34. 	}
  35. 	return ans;
  36. }
  37. int main()
  38. {	
  39. 	ios_base::sync_with_stdio(false);
  40. 	cin.tie(NULL);
  41. 	cout.tie(NULL);
  42.  
  43. 	ll t;cin>>t;
  44. 	while(t--)
  45. 	{
  46. 		string r,s;cin>>s>>r;
  47. 		ll n=s.length();
  48.  
  49. 		vi v;
  50. 		rep(i,0,n)
  51. 		if(s[i]!=r[i])
  52. 		v.pb(i);
  53.  
  54. 		if(v.size()<=1)
  55. 		{
  56. 			cout<<v.size()<<endl;
  57. 			continue;
  58. 		}
  59. 		ll ans=v[v.size()-1]-v[0]+1;
  60. 		//test2("ans",ans);
  61. 		ll st=v[0];ll fin=v[v.size()-1];
  62.  
  63. 		ll cnt=0;
  64. 		v.clear();
  65. 		for(ll i=st+1;i<fin;i++)
  66. 		{
  67. 			if(s[i]==r[i])
  68. 			cnt++;
  69. 			else
  70. 			{
  71. 				v.pb(cnt);
  72. 				cnt=0;
  73. 			}
  74. 		}
  75. 		if(cnt)
  76. 		v.pb(cnt);	
  77. 		sort(all(v));
  78. 		reverse(all(v));	
  79. 		ll sum=0;
  80. 		rep(i,0,v.size())
  81. 		{
  82. 			sum+=v[i];
  83. 			ans=min(ans,(ans-sum)*(i+2));
  84. 		}
  85. 		cout<<ans<<endl;
  86. 	}
  87. }
Runtime error #stdin #stdout 0.05s 4324KB
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https://ideone.com/KWnjJ7
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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