Submission #3771741
Source Code Expand
#include<iostream> #include<vector> #include<algorithm> #include<cmath> #include<utility> #include<stack> #include<queue> #include<map> #include<set> using namespace std; #define FOR(i, a, n) for(int i = (int)(a); i < (int)(n); ++i) #define REP(i, n) FOR(i, 0, n) #define PRINT(mpr) printf(#mpr "\n") #define yOUT PRINT(Yes) #define nOUT PRINT(No) #define YOUT PRINT(YES) #define NOUT PRINT(NO) #define pb(a) push_back(a) #define all(x) (x).begin(),(x).end() int main(){ int n; cin >> n; double sum = 0, pi = 3.14159265358979323846; vector<double> a(n); REP(i, n) cin >> a[i]; sort(all(a)); REP(i, n){ if(n % 2 == 0){ if(i % 2 == 0){ sum -= a[i]*a[i]; } else{ sum += a[i]*a[i]; } } else{ if(i % 2 == 0){ sum += a[i]*a[i]; } else{ sum -= a[i]*a[i]; } } } printf("%.10f\n", sum*pi); }
Submission Info
Submission Time | |
---|---|
Task | B - N重丸 |
User | Kou026 |
Language | C++14 (GCC 5.4.1) |
Score | 100 |
Code Size | 1084 Byte |
Status | AC |
Exec Time | 2 ms |
Memory | 256 KB |
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 | 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 | 2 ms | 256 KB |
random_4.txt | AC | 1 ms | 256 KB |
random_5.txt | AC | 1 ms | 256 KB |
random_6.txt | AC | 2 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 |