結果
問題 | No.665 Bernoulli Bernoulli |
ユーザー | 小指が強い人 |
提出日時 | 2018-03-16 02:52:41 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 599 ms / 2,000 ms |
コード長 | 3,223 bytes |
コンパイル時間 | 1,876 ms |
コンパイル使用メモリ | 175,828 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-06-01 09:08:50 |
合計ジャッジ時間 | 11,978 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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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 | 4 ms
6,816 KB |
testcase_01 | AC | 3 ms
6,940 KB |
testcase_02 | AC | 599 ms
6,944 KB |
testcase_03 | AC | 597 ms
6,940 KB |
testcase_04 | AC | 564 ms
6,940 KB |
testcase_05 | AC | 521 ms
6,940 KB |
testcase_06 | AC | 518 ms
6,948 KB |
testcase_07 | AC | 501 ms
6,940 KB |
testcase_08 | AC | 501 ms
6,940 KB |
testcase_09 | AC | 568 ms
6,944 KB |
testcase_10 | AC | 501 ms
6,940 KB |
testcase_11 | AC | 583 ms
6,944 KB |
testcase_12 | AC | 568 ms
6,940 KB |
testcase_13 | AC | 593 ms
6,944 KB |
testcase_14 | AC | 596 ms
6,940 KB |
testcase_15 | AC | 514 ms
6,944 KB |
testcase_16 | AC | 537 ms
6,940 KB |
testcase_17 | AC | 524 ms
6,940 KB |
testcase_18 | AC | 504 ms
6,944 KB |
ソースコード
#include "bits/stdc++.h" #include <gmp.h> using namespace std; typedef long long ll; typedef unsigned long long ull; typedef vector<int> veci; typedef vector<ll> vecll; typedef vector<string> vecs; template<class T,class U> using Hash=unordered_map<T,U>; #define REP(i, a, n) for(ll i = a; i < n; i++) #define RREP(i, a, n) for(ll i = n-1; i >= a; i--) #define rep(i, n) REP(i, 0, n) #define rrep(i, n) RREP(i, 0, n) #define MD 1000000007 template<class T> T read(){T a;cin >> a;return a;} template<class T> void read(T& a){cin >> a;} template<class T, class ...Args> void read(T& a, Args&... args){cin >> a; read(args...);} template<class T> void rarr(T a, int n){for(int i = 0; i < n; i++) {cin >> a[i];}} template<char c = ' ',class T> void write(T a){cout << setprecision(12) << a << endl;} template<char c = ' ',class T,class ...Args> void write(T a, Args... args){cout << setprecision(12) << a << c; write<c>(args...);} template<class T> void warr(vector<T> a, const char* c = " "){cout << a[0];for(int i = 1; i < (int)a.size(); i++)cout << c << a[i];cout << endl;;} template<class T> void warr(T a, int n, const char* c = " "){cout << a[0];for(int i = 1; i < n; i++)cout << c << a[i];cout << endl;} void split(string s, string delim, veci& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(atoi(s.substr(pos).data()));break;}else {result.push_back(atoi(s.substr(pos, p - pos).data()));}pos = p + delim.size();}} void split(string s, string delim, vecs& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(s.substr(pos));break;}else {result.push_back(s.substr(pos, p - pos));}pos = p + delim.size();}} ll gcd(ll a, ll b){while(true){ll k = a % b;if(k == 0)return b;a = b;b = k;}} ll comb(ll n, ll m){ll p=1;m=min(m,n-m);for(ll i=1;i<=m;i++){p*=n-i+1;p/=i;}return p;} ull power( const ull& a, ull k, const ull& n ) { if ( a == 0 || n == 0 ) return( 0 ); if ( k == 0 ) return( 1 % n ); ull currentMod = a % n; ull currentValue = ( ( k & 1 ) > 0 ) ? currentMod : 1; for ( k >>= 1 ; k > 0 ; k >>= 1 ) { currentMod = ( currentMod * currentMod ) % n; if ( ( k & 1 ) > 0 ) currentValue = ( currentValue * currentMod ) % n; } return( currentValue ); } inline ll mult(ll a,ll b){ return ((a%MD)*(b%MD))%MD; } inline ll divi(ll a, ll b){ return (((a%MD)*power(b,MD-2,MD))%MD); } inline ll plu(ll a, ll b){ return (a+b)%MD; } inline ll minu(ll a, ll b){ return (a-b+MD)%MD; } int main(void) { ll frac[10100]={1},inv_frac[10100]={1}; REP(i,1,10100)frac[i]=(frac[i-1]*i)%MD; REP(i,1,10100)inv_frac[i]=power(frac[i],MD-2,MD); ll n,k; read(n,k); ll br[10100]={n,divi(mult(n,n+1),2)}; REP(i,2,k+1){ rep(j,i){ ll c=mult(frac[i+1],mult(inv_frac[i-j+1],inv_frac[j])); //write(i+1,j,c); if((i+j)%2==0)br[i]=plu(br[i],mult(c,br[j])); else br[i]=minu(br[i],mult(c,br[j])); } br[i]=minu(br[i],power(n,i+1,MD)); br[i]=divi(br[i],minu(0,i+1)); } write(br[k]); return 0; }