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19 lines
357 B
C++
19 lines
357 B
C++
#include<stdio.h>
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#include<string.h>
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#include<algorithm>
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using namespace std;
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int main()
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{
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double time,a,b,c;
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while(scanf("%lf%lf%lf",&a,&b,&c)!=EOF)
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{
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if(a>=b)time=c*1.0/a;
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else {
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double L=2*a*c/(3*a+b);
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time=(c-L)/b+L/a;
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}
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printf("%.3lf\n",time);
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}
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return 0;
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}
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