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看了半天才看出来原来你用的求根公式解方程啊……

Posted by yyii1111 at 2011-10-27 13:42:52 on Problem 2006
In Reply To:AC代码,作为参考,其实挺水的 Posted by:994487586 at 2011-07-21 01:02:39
> #include <stdio.h>
> #include <math.h>
> 
> double ka;
> double acid;
> double res;
> double temp, delta;
> int m, n;
> 
> int main()
> {
> 	scanf("%lf%lf%d%d", &ka, &acid, &m, &n);
> 	while(ka && acid && m && n)
> 	{
> 		delta = sqrt(ka * ka+4 * n * acid * ka * m);
>         temp = (-ka + delta) / (2 * n);
>         res = -log10(temp);
>         printf("%.3lf\n",res);
> 		scanf("%lf%lf%d%d", &ka, &acid, &m, &n);
> 	}
> 	return 0;
> }

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