delete pics to save space

2023-08-03 09:22:52 +08:00
commit de60cd6ed4
1334 changed files with 66221 additions and 0 deletions
--- a/1.1024.cpp
+++ b/1.1024.cpp
@ -0,0 +1,18 @@
+#include<cstdio>
+#include<cmath>
+int main()
+{
+     double a,b,c,d;
+     double as,bs,t,si;
+     double x1,x2,x3;
+     scanf("%lf%lf%lf%lf",&a,&b,&c,&d);
+     as=b*b-3*a*c;
+     bs=b*c-9*a*d;
+     t=(2*as*b-3*a*bs)/(2*sqrt(as*as*as));
+     si=acos(t);
+     x1=(-b-2*sqrt(as)*cos(si/3))/(3*a);
+     x2=(-b+sqrt(as)*(cos(si/3)+sqrt(3)*sin(si/3)))/(3*a);
+     x3=(-b+sqrt(as)*(cos(si/3)-sqrt(3)*sin(si/3)))/(3*a);
+     printf("%.2lf %.2lf %.2lf\n",x1,x3,x2);
+     return 0;
+}