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Re:直接套公式就过了......

Posted by yzcnyun at 2010-09-26 16:37:42 on Problem 2663
In Reply To:Re:直接套公式就过了...... Posted by:huicpc39 at 2010-03-01 12:16:06

> if(n&1)printf("0\n");
> else printf("%d\n",(int)(0.7886751345948128822545743*pow(3.7320508075688772935274463415,n/2.)+1));

我擦。。。我疯了

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