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  1. Prepare
  2. Mathematics
  3. Combinatorics
  4. Anti-Palindromic Strings
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Anti-Palindromic Strings

  • ygrinev
     + 0 comments

    C# one-line

    public static int solve(int n, int m)
{
    return n == 1 ? m%1000000007: (int)((BigInteger.ModPow(m-2, n-2,1000000007)*m*(m-1)) % 1000000007);
}

    ..without BigInteger would be longer :)