結果
問題 | No.129 お年玉(2) |
ユーザー |
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提出日時 | 2020-10-16 15:23:25 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,077 bytes |
コンパイル時間 | 2,027 ms |
コンパイル使用メモリ | 197,488 KB |
最終ジャッジ日時 | 2025-01-15 07:48:52 |
ジャッジサーバーID (参考情報) |
judge2 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 5 WA * 41 |
ソースコード
#include "bits/stdc++.h"#define REP(i,num) for(ll i=0;i<(num);++i)#define FOR(i,c,num) for(ll (i)=(c);(i)<(num);++(i))#define LOOP(i) while(i--)#define ALL(c) c.begin(),c.end()#define PRINTALL(c) for(auto pitr=c.begin();pitr!=c.end();++pitr){cout<<*pitr;if(next(pitr,1)!=c.end())cout<<' ';}cout<<endl;#define PAIRCOMP(c,comp) [](const pair<ll,ll>& lhs,const pair<ll,ll>& rhs){return lhs.c comp rhs.c;}using namespace std;using ll = long long;using vll = vector<ll>;using vvll = vector<vector<ll>>;constexpr ll atcoder_mod = 1e9+7;template<typename T=ll>T in(){ T x; cin >> x; return (x); }template<typename T=ll,typename C=vector<T>>C vecin(int N){ C x(N);REP(i,N){ x[i]=in<T>(); }return x; }void vout(){ cout << endl; }template<typename Head,typename... Tail>void vout(Head&& h,Tail&&... t){ cout << ' ' << h;vout(forward<Tail>(t)...); }void out(){ cout << endl; }template<typename Head,typename... Tail>void out(Head&& h,Tail&&... t){ cout << h;vout(forward<Tail>(t)...); }template<typename T>bool chmax(T& a,T b){ if(a<b){ a=b;return true; }return false; }template<typename T>bool chmin(T& a,T b){ if(a>b){ a=b;return true; }return false; }class Combination{constexpr static int atcoder_mod = 1000000007;vector<ll> fac,finv,inv;public:Combination(ll N){fac.resize(N+1);finv.resize(N+1);inv.resize(N+1);fac[0] = fac[1] = 1;finv[0] = finv[1] = 1;inv[1] = 1;for(int i=2;i<=N;i++){fac[i] = fac[i-1] * i % atcoder_mod;inv[i] = atcoder_mod - inv[atcoder_mod%i] * (atcoder_mod/i) % atcoder_mod;finv[i] = finv[i-1] * inv[i] % atcoder_mod;}}ll Caluclation(ll n,ll r){if(n < r) return 0;if (n < 0 || r < 0) return 0;return fac[n] * (finv[r] * finv[n-r] % atcoder_mod) % atcoder_mod;}ll GetFInv(ll i){return finv[i];}};int main(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(10);auto N=in();auto M=in();auto D = N/1000ll;auto E = D/M;auto R = N-E*M*1000ll;auto C = (R/1000ll);Combination comb(M);out(comb.Caluclation(M,C));return 0;}