NOI.AC

ID	题目	提交者	结果	用时	内存	语言	文件大小	提交时间	测评时间
#206401	#1745. 一元三次方程求解	wsh0220	100	0ms	1288kb	C++	377b	2024-07-22 17:59:08	2024-07-22 20:03:19

answer

#include <bits/stdc++.h>
using namespace std;
double a,b,c,d,ya,yb,x;
int main()
{
	cin>>a>>b>>c>>d;
	for(double i=-100;i<=100;i+=0.001)
	{
    	ya=a*i*i*i+b*i*i+c*i+d;
    	yb=a*(i+0.001)*(i+0.001)*(i+0.001)+b*(i+0.001)*(i+0.001)+c*(i+0.001)+d;
    	if(ya>=0&&yb<=0||ya<=0&&yb>=0)
    	{
    		x=(i+i+0.001)/2;
    		printf("%.2lf ",x);
    	}
	}
	return 0;
}

源文件, 语言: C++

详细

小提示：点击横条可展开更详细的信息

Test #1:

score: 25

Accepted

time: 0ms

memory: 1284kb

input:

1 -2 -1 2

output:

-1.00 1.00 2.00

result:

ok single line: '-1.00 1.00 2.00 '

Test #2:

score: 25

Accepted

time: 0ms

memory: 1288kb

input:

1 -4.65 2.25 1.4

output:

-0.35 1.00 4.00

result:

ok single line: '-0.35 1.00 4.00 '

Test #3:

score: 25

Accepted

time: 0ms

memory: 1284kb

input:

1 10 -1 -10

output:

-10.00 -1.00 1.00

result:

ok single line: '-10.00 -1.00 1.00 '

Test #4:

score: 25

Accepted

time: 0ms

memory: 1288kb

input:

1 -1.8 -8.59 -0.84

output:

-2.10 -0.10 4.00

result:

ok single line: '-2.10 -0.10 4.00 '