I am trying the CSES problem set. I am getting WA on a few tests in Two Sets — II question. Here is the link for the code and the results https://cses.fi/problemset/result/911739/ ↵
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My approach is to create a dp[i][j] which stores the number of ways to get sum i using first j indices. My target is to get sum n*(n-1)/4 . Formula I use is- dp[i][j]=dp[i][j-1]+dp[i-j][j-1];↵
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I initialized dp[0][i] to 1 for all i<=n bcoz the only possible way is to select no indice at all.↵
And also dp[i][0] to 0 for all 1<=i<=target bcoz its not possible to create a sum using no digits at all.↵
I then print (dp[target][n])/2;↵
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Please help. I am getting WA on few tests.
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My approach is to create a dp[i][j] which stores the number of ways to get sum i using first j indices. My target is to get sum n*(n-1)/4 . Formula I use is- dp[i][j]=dp[i][j-1]+dp[i-j][j-1];↵
↵
I initialized dp[0][i] to 1 for all i<=n bcoz the only possible way is to select no indice at all.↵
And also dp[i][0] to 0 for all 1<=i<=target bcoz its not possible to create a sum using no digits at all.↵
I then print (dp[target][n])/2;↵
↵
Please help. I am getting WA on few tests.
