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O(1) 的公式推出来了，也用了快速幂取余，还是TLE，谁来指导一下

Posted by alpc73 at 2010-05-09 23:08:12 on Problem 3761 
刚开始看错数据了，没开见100000case，推了个o(n)的
f(n,k)=f(n-1,k)*(k+1)+(k^(n-k))*(k-1)!
TLE后改成O(1)的
f(n,k)=k!*((k+1)^q+k^q); q=m-n;还是TLE
用了快速幂取余，还是TLE.
谁能指条明路？
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