45 lines
850 B
C++
45 lines
850 B
C++
#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <cmath>
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double a,b,c,d,L,R;
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double delta;
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double x1,x2;
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double fx1,fx2,fL,fR;
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int ans=0;
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int i;
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double maxvalue=0;
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double* data[4]={&fL,&fR,&fx1,&fx2};
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int main()
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{
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while(scanf("%lf %lf %lf %lf %lf %lf",&a,&b,&c,&d,&L,&R)==6)
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{
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ans=2;
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delta=b*b-3*a*c;
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fL=fabs(a*L*L*L+b*L*L+c*L+d);
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fR=fabs(a*R*R*R+b*R*R+c*R+d);
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if(delta>0)
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{
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x1=(-b-sqrt(delta))/(3*a);
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x2=(sqrt(delta)-b)/(3*a);
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fx1=fabs(a*x1*x1*x1+b*x1*x1+c*x1+d);
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fx2=fabs(a*x2*x2*x2+b*x2*x2+c*x2+d);
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ans=4;
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}
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maxvalue=*data[0];
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for(i=1;i<ans;i++)
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{
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if(*data[i]>maxvalue) maxvalue=*data[i];
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}
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printf("%.5lf\n",maxvalue);
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}
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return 0;
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}
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