Submission #3545300


Source Code Expand

#include<iostream>
#include<string>
#include<cstdio>
#include<cmath>
#include<cstring>
#include<algorithm>
#include<vector>
#include<functional>
#include<iomanip>
#include<queue>
#include<cassert>
#include<tuple>
#include<set>
#include<map>
#include<list>
#include<bitset>
#include<utility>
#include<numeric>

#define pb push_back
#define mp make_pair
#define all(a)  (a).begin(),(a).end()
#define dwn(a)  (a).begin(),(a).end(), greater<int>()
#define rep(i, m) for (int i = 0; i < m; i++)
#define REP(i, n, m) for (int i = n; i < m; i++)
#define V vector<int>
#define VV vector<V>
#define VVV vector<VV>

using namespace std;

typedef long long ll;
typedef pair<int, int> P;

const int dx[4] = { 1, 0, -1, 0 };
const int dy[4] = { 0, 1, 0, -1 };
const int INF = (int)1e9;
const ll inf = (ll)1e18;
const ll MOD{ (ll)1e9 + 7 };
const long double EPS = 1e-10;

double r, n, m;

double length(double m) {
	if (m <= 0 || n <= m) return 0;
	m = min(m, n - m);
	double d = r - 2 * r * m / n;
	return 2 * sqrt(r * r - d * d);
}

int main() {
	cin >> r >> n >> m;
	double ans = 0.0;
	for (int i = 1; i <= n + m - 1; i++) {
		ans += max(length(i), length(i - m));
	}
	cout << fixed << setprecision(10) << ans << endl;
	return 0;
}

Submission Info

Submission Time
Task B - ステップカット
User tako_39
Language C++14 (GCC 5.4.1)
Score 200
Code Size 1279 Byte
Status AC
Exec Time 3 ms
Memory 256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 200 / 200
Status
AC × 3
AC × 16
Set Name Test Cases
Sample 00_example_01.txt, 00_example_02.txt, 00_example_03.txt
All 00_example_01.txt, 00_example_02.txt, 00_example_03.txt, 10_rand_01.txt, 10_rand_02.txt, 10_rand_03.txt, 10_rand_04.txt, 10_rand_05.txt, 10_rand_06.txt, 10_rand_07.txt, 10_rand_08.txt, 20_hand_01.txt, 20_hand_02.txt, 20_hand_03.txt, 20_hand_04.txt, 20_hand_05.txt
Case Name Status Exec Time Memory
00_example_01.txt AC 1 ms 256 KB
00_example_02.txt AC 1 ms 256 KB
00_example_03.txt AC 3 ms 256 KB
10_rand_01.txt AC 1 ms 256 KB
10_rand_02.txt AC 1 ms 256 KB
10_rand_03.txt AC 2 ms 256 KB
10_rand_04.txt AC 1 ms 256 KB
10_rand_05.txt AC 1 ms 256 KB
10_rand_06.txt AC 1 ms 256 KB
10_rand_07.txt AC 1 ms 256 KB
10_rand_08.txt AC 1 ms 256 KB
20_hand_01.txt AC 3 ms 256 KB
20_hand_02.txt AC 3 ms 256 KB
20_hand_03.txt AC 3 ms 256 KB
20_hand_04.txt AC 1 ms 256 KB
20_hand_05.txt AC 1 ms 256 KB