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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int n, m;
  4. int LCS(char A[], char B[], int i, int j)
  5. {
  6.     if(i == n || j == m)
  7.     {
  8.         return 0;
  9.     }
  10.     else if(A[i] == B[j])
  11.     {
  12.         return 1 + LCS(A, B, i+1, j+1);
  13.     }
  14.     else
  15.     {
  16.         return max(LCS(A, B, i+1, j), LCS(A, B, i, j+1));
  17.     }
  18. }
  19.  
  20. int main()
  21. {
  22.     cin>>n>>m;
  23.     char A[n], B[m];
  24.     cin>>A>>B;
  25.  
  26.     int ans = LCS(A, B, 0, 0);
  27.  
  28.     cout<<ans<<endl;
  29.  
  30. }
  31.  
Success #stdin #stdout 0.01s 5316KB
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stdin
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2 4
bd abcd
stdout
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2
https://ideone.com/N2OaqX
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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