Submission #1842228
Source Code Expand
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <fstream>
#include <set>
#include <utility>
#include <algorithm>
#include <queue>
#include <stack>
#include <deque>
#include <numeric>
#include <sstream>
#include <list>
#include <map>
#include <functional>
#include <iterator>
#define rep(i,p,n) for(int i=(int)p;i<(int)n;i++)
#define repp(i,p,n) for(int i=(int)p;i>=(int)n;i--)
#define Sort(x) sort(x.begin(),x.end())
#define PSort(x) sort(begin(x), end(x), pairCompare)
#define ll long long
#define INF 2000000000
#define pb push_back
#define mp make_pair
#define PI 3.14159265358979
using namespace std;
int main() {
int n;
cin >> n;
vector<int> v(n);
double ans = 0;
rep(i, 0, n)scanf("%d", &v[i]);
sort(v.begin(), v.end(), greater<int>());
rep(i, 0, n) {
if (i % 2 == 0)ans += v[i]*v[i]*PI;
else ans -= v[i]*v[i]*PI;
}
printf("%.10f", ans);
return 0;
}
Submission Info
Submission Time
2017-12-09 13:31:42+0900
Task
B - N重丸
User
gotutiyan
Language
C++14 (GCC 5.4.1)
Score
100
Code Size
994 Byte
Status
AC
Exec Time
1 ms
Memory
256 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:39:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
rep(i, 0, n)scanf("%d", &v[i]);
^
Judge Result
Set Name
Sample
All
Score / Max Score
0 / 0
100 / 100
Status
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
1 ms
256 KB
maxrand_1.txt
AC
1 ms
256 KB
maxrand_2.txt
AC
1 ms
256 KB
random_0.txt
AC
1 ms
256 KB
random_1.txt
AC
1 ms
256 KB
random_2.txt
AC
1 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
1 ms
256 KB
random_8.txt
AC
1 ms
256 KB
random_9.txt
AC
1 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