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递归了? 我的k只要上到10^9肯定是说stack overflow

Posted by eminemxh at 2007-06-03 23:33:07 on Problem 3233
In Reply To:Re:怎么做？ Posted by:akme at 2007-06-03 21:43:41

> 设f[n]=A^1+A^2+....A^n;
> 当n是偶数,f[n]=f[n/2]+f[n/2]*A^(n/2);
> 但n是奇数,f[n]=f[n-1]+A^(n);

stack overflow是不是给我一个WA还是Runtime Error?
我得到的是WA

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