結果
問題 | No.1033 乱数サイ |
ユーザー | Suu0313 |
提出日時 | 2020-05-02 16:51:41 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 4,487 bytes |
コンパイル時間 | 1,674 ms |
コンパイル使用メモリ | 175,404 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-06-09 17:27:03 |
合計ジャッジ時間 | 2,490 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 2 ms
6,944 KB |
testcase_05 | AC | 2 ms
6,944 KB |
testcase_06 | AC | 2 ms
6,944 KB |
testcase_07 | AC | 2 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,944 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 2 ms
6,944 KB |
testcase_14 | AC | 2 ms
6,948 KB |
testcase_15 | AC | 2 ms
6,940 KB |
testcase_16 | AC | 2 ms
6,940 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; //conversion //------------------------------------------ inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;} template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();} //math //------------------------------------------- template<class T> inline T sqr(T x) {return x*x;} //typedef //------------------------------------------ typedef long long LL; typedef pair<int, int> PII; typedef pair<LL,LL> PLL; typedef map<int,int> MII; typedef queue<int> QI; typedef queue<PII> QPII; typedef stack<int> SI; typedef stack<PII> SPII; typedef deque<int> DI; typedef vector<int> VI; typedef vector<VI> VVI; typedef vector<LL> VLL; typedef vector<VLL> VVLL; typedef vector<bool> VB; typedef vector<VB> VVB; typedef vector<double> VD; typedef vector<VD> VVD; typedef vector<string> VS; typedef vector<VS> VVS; typedef vector<char> VC; typedef vector<VC> VVC; typedef vector<PII> VPII; typedef vector<PLL> VPLL; typedef priority_queue<int> PQGI; //大きい順 typedef priority_queue<int, VI, greater<int>> PQLI; typedef priority_queue<PII> PQGP; typedef priority_queue<PII, VPII, greater<int>> PQLP; //container util //------------------------------------------ #define ALL(a) (a).begin(),(a).end() #define RALL(a) (a).rbegin(),(a).rend() #define PB push_back #define PF push_front #define POB pop_back #define POF pop_front #define MP make_pair #define SZ(a) int((a).size()) #define SQ(a) ((a)*(a)) #define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i) #define EXIST(s,e) ((s).find(e)!=(s).end()) #define SORT(c) sort((c).begin(),(c).end()) #define SORTR(c) sort((c).rbegin(), (c).rend()) #define LB lower_bound #define UB upper_bound #define NEXP next_permutation #define FI first #define SE second //repetition //------------------------------------------ #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define REP(i,n) FOR(i,0,n) #define FORR(i,a,b) for(int i = (b-1);i>=a;i--) #define REPR(i,n) FORR(i,0,n) #define BFOR(bit,a,b) for(int bit = (a); bit < (1<<(b)); ++bit) #define BREP(bit,n) BFOR(bit,0,n) //constant //-------------------------------------------- const double EPS = 1e-10; const double PI = acos(-1.0); const int INF = INT_MAX/2; const LL LINF = LLONG_MAX/3; const int RINF = INT_MIN/2; const LL RLINF = LLONG_MIN/3; const LL MOD = 1e9+7; const LL MODD = 998244353; const int MAX = 510000; inline bool Eq(double a, double b) { return fabs(b - a) < EPS; } //other //------------------------------------------- template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; } template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; } #define COUT(x) cout << (x) << endl #define COUT2(x,y) cout << (x) << " " << (y) << endl #define COUT3(x,y,z) cout << (x) << " " << (y) << " " << (z) << endl #define PR(x) cout << (x) #define ENDL cout << endl #define SPACE cout << " " #define BC(x) __builtin_popcountll(x) void cYes(){ COUT("Yes");exit(0); } void cNo(){ COUT("No");exit(0); } void cYES(){ COUT("YES");exit(0); } void cNO(){ COUT("NO");exit(0); } void cyes(){ COUT("yes");exit(0); } void cno(){ COUT("no");exit(0); } void cMINU(){ COUT(-1);exit(0); } void cZERO(){ COUT(0);exit(0); } VI dx = {1,0,-1,0,1,1,-1,-1}; VI dy = {0,1,0,-1,1,-1,1,-1}; VC dc = {'R','D','L','U'}; VS ds = {"R","D","L","U","RD","RU","LD","LU"}; LL Gcd(LL a, LL b) {return __gcd(a,b);} LL Lcm(LL a, LL b) {return a/Gcd(a,b)*b;} LL ModPow(LL A, LL N, LL M){ LL res = 1; while(N>0){ if(N&1) res = res * A % M; A = A * A % M; N >>= 1; } return res; } LL fac[MAX], finv[MAX], inv[MAX]; void ConInit(LL M) { fac[0] = fac[1] = 1; finv[0] = finv[1] = 1; inv[1] = 1; for (int i = 2; i < MAX; i++){ fac[i] = fac[i - 1] * i % M; inv[i] = M - inv[M%i] * (M / i) % M; finv[i] = finv[i - 1] * inv[i] % M; } } LL COM(int n, int k, LL M){ if (n < k) return 0; if (n < 0 || k < 0) return 0; return fac[n] * (finv[k] * finv[n - k] % M) % M; } template<class T> void VCout(vector<T> &v){ int N = SZ(v); REP(i,N){ cout << v.at(i); if(i == N-1) cout << endl; else cout << " "; } return; } int main() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(12); double N,K; cin >> N >> K; double ans = 0; REP(i,N+1){ ans += i*K; } ans /= (N+1)*K; COUT(ans); return 0; }