Submission #1371150


Source Code Expand

#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<iomanip>
using namespace std;
#define PI 3.14159265359
int main(){
	int n;
	cin>>n;
	vector<double> r;
	for(int i=0;i<n;i++){
		double t;
		cin>>t;
		r.push_back(t);
	}
	sort(r.begin(),r.end(),greater<double>());
	double ans=0;
	for(int i=0;i<r.size();i++){
		if(!(i%2)){
			ans+=r[i]*r[i];
		}
		else ans-=r[i]*r[i];
	}
	cout<<fixed<<setprecision(10)<<ans*PI<<endl;
	return 0;
}

Submission Info

Submission Time
Task B - N重丸
User SugarDragon5
Language C++14 (GCC 5.4.1)
Score 100
Code Size 487 Byte
Status AC
Exec Time 2 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 2
AC × 21
Set Name Test Cases
Sample example_0.txt, example_1.txt
All example_0.txt, example_1.txt, maxrand_0.txt, maxrand_1.txt, maxrand_2.txt, random_0.txt, random_1.txt, random_2.txt, random_3.txt, random_4.txt, random_5.txt, random_6.txt, random_7.txt, random_8.txt, random_9.txt, special_0.txt, special_1.txt, special_2.txt, special_3.txt, example_0.txt, example_1.txt
Case Name Status Exec Time Memory
example_0.txt AC 1 ms 256 KB
example_1.txt AC 1 ms 256 KB
maxrand_0.txt AC 2 ms 256 KB
maxrand_1.txt AC 2 ms 256 KB
maxrand_2.txt AC 2 ms 256 KB
random_0.txt AC 1 ms 256 KB
random_1.txt AC 1 ms 256 KB
random_2.txt AC 2 ms 256 KB
random_3.txt AC 1 ms 256 KB
random_4.txt AC 1 ms 256 KB
random_5.txt AC 1 ms 256 KB
random_6.txt AC 1 ms 256 KB
random_7.txt AC 2 ms 256 KB
random_8.txt AC 1 ms 256 KB
random_9.txt AC 2 ms 256 KB
special_0.txt AC 1 ms 256 KB
special_1.txt AC 1 ms 256 KB
special_2.txt AC 1 ms 256 KB
special_3.txt AC 1 ms 256 KB