結果
問題 | No.454 逆2乗和 |
ユーザー |
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提出日時 | 2017-03-04 12:56:39 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 1,903 ms / 2,000 ms |
コード長 | 2,334 bytes |
コンパイル時間 | 1,103 ms |
コンパイル使用メモリ | 109,096 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-11-30 03:13:09 |
合計ジャッジ時間 | 68,768 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 31 |
ソースコード
#include <iostream>#include <string>#include <queue>#include <stack>#include <algorithm>#include <list>#include <vector>#include <complex>#include <utility>#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <climits>#include <bitset>#include <ctime>#include <map>#include <unordered_map>#include <set>#include <unordered_set>#include <cassert>#include <cstddef>#include <iomanip>#include <numeric>#include <tuple>#include <sstream>#include <fstream>#include <chrono>using namespace std;#define REP(i, n) for (int (i) = 0; (i) < (n); (i)++)#define FOR(i, a, b) for (int (i) = (a); (i) < (b); (i)++)#define RREP(i, a) for(int (i) = (a) - 1; (i) >= 0; (i)--)#define FORR(i, a, b) for(int (i) = (a) - 1; (i) >= (b); (i)--)#define DEBUG(C) cerr << #C << " = " << C << endl;using LL = long long;using VI = vector<int>;using VVI = vector<VI>;using VL = vector<LL>;using VVL = vector<VL>;using VD = vector<double>;using VVD = vector<VD>;using PII = pair<int, int>;using PDD = pair<double, double>;using PLL = pair<LL, LL>;using VPII = vector<PII>;template<typename T> using VT = vector<T>;#define ALL(a) begin((a)), end((a))#define RALL(a) rbegin((a)), rend((a))#define SORT(a) sort(ALL((a)))#define RSORT(a) sort(RALL((a)))#define REVERSE(a) reverse(ALL((a)))#define MP make_pair#define FORE(a, b) for (auto &&a : (b))#define FIND(s, e) ((s).find(e) != (s).end())#define EB emplace_backtemplate<typename T> inline bool chmax(T &a, T b){if (a < b){a = b;return true;}return false;}template<typename T> inline bool chmin(T &a, T b){if (a > b){a = b;return true;}return false;}const int INF = 1e9;const int MOD = INF + 7;const LL LLINF = 1e18;chrono::system_clock::time_point start;const long long LIMIT = 2000;LL getLimitmsec() {auto now = chrono::system_clock::now();auto pass = now - start;return LIMIT - chrono::duration_cast<chrono::milliseconds>(pass).count();}const long double PI = acos(-1);long double x;int main() {start = chrono::system_clock::now();cin >> x;long double ans1 = 0, ans2 = 0;long long n;for (n = 1; getLimitmsec() > 100; n++) {const long double buf = (x + n);ans1 += 1. / (buf * buf);}cout << fixed << setprecision(15) << ans1 + 1. / (x + n) << endl;}