結果
問題 | No.117 組み合わせの数 |
ユーザー | Taiki0715 |
提出日時 | 2023-11-25 19:38:13 |
言語 | C++17(clang) (17.0.6 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,894 bytes |
コンパイル時間 | 4,585 ms |
コンパイル使用メモリ | 182,016 KB |
実行使用メモリ | 28,200 KB |
最終ジャッジ日時 | 2024-09-26 11:10:03 |
合計ジャッジ時間 | 5,629 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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ソースコード
#include <bits/stdc++.h> using namespace std; #if __has_include(<atcoder/all>) #include <atcoder/all> using namespace atcoder; template<int mod>istream &operator>>(istream &is,static_modint<mod> &a){long long b;is>>b;a=b;return is;} istream &operator>>(istream &is,modint &a){long long b;cin>>b;a=b;return is;} #endif #ifdef LOCAL #include "debug.h" #else #define debug(...) static_cast<void>(0) #define debugg(...) static_cast<void>(0) template<typename T1,typename T2>ostream &operator<<(ostream &os,const pair<T1,T2>&p){os<<p.first<<' '<<p.second;return os;} #endif using ll=long long; using ull=unsigned long long; using P=pair<ll,ll>; template<typename T>using minque=priority_queue<T,vector<T>,greater<T>>; template<typename T>bool chmax(T &a,const T &b){return (a<b?(a=b,true):false);} template<typename T>bool chmin(T &a,const T &b){return (a>b?(a=b,true):false);} template<typename T1,typename T2>istream &operator>>(istream &is,pair<T1,T2>&p){is>>p.first>>p.second;return is;} template<typename T>istream &operator>>(istream &is,vector<T> &a){for(auto &i:a)is>>i;return is;} template<typename T1,typename T2>void operator++(pair<T1,T2>&a,int n){a.first++,a.second++;} template<typename T1,typename T2>void operator--(pair<T1,T2>&a,int n){a.first--,a.second--;} template<typename T>void operator++(vector<T>&a,int n){for(auto &i:a)i++;} template<typename T>void operator--(vector<T>&a,int n){for(auto &i:a)i--;} #define reps(i,a,n) for(int i=(a);i<(n);i++) #define rep(i,n) reps(i,0,n) #define all(x) x.begin(),x.end() #define pcnt(x) __builtin_popcount(x) ll myceil(ll a,ll b){return (a+b-1)/b;} template<typename T,size_t n,size_t id=0> auto vec(const int (&d)[n],const T &init=T()){ if constexpr (id<n)return vector(d[id],vec<T,n,id+1>(d,init)); else return init; } void SOLVE(); int main(){ ios::sync_with_stdio(false); cin.tie(nullptr); #ifdef LOCAL clock_t start=clock(); #endif int testcase=1; //cin>>testcase; for(int i=0;i<testcase;i++){ SOLVE(); } #ifdef LOCAL cerr<<"time:"; cerr<<(clock()-start)/1000; cerr<<"ms\n"; #endif } template<typename T> struct factorial_table{ private: int mod,capacity; vector<T>fact,factinv,inv; void resize(int n){ fact.resize(n+1),factinv.resize(n+1),inv.resize(n+1); for(int i=capacity+1;i<=n;i++){ fact[i]=fact[i-1]*i; inv[i]=-inv[mod%i]*(mod/i); factinv[i]=factinv[i-1]*inv[i]; } capacity=n; } public: factorial_table():capacity(1),mod(T::mod()),fact{1,1},factinv{1,1},inv{0,1}{} T C(int n,int k){ if(n<k)return 0; if(k<0)return 0; if(capacity<n)resize(n); return fact[n]*factinv[k]*factinv[n-k]; } T P(int n,int k){ if(n<k)return 0; if(k<0)return 0; if(capacity<n)resize(n); return fact[n]*factinv[n-k]; } T H(int n,int k){ return C(n+k-1,k); } T factorial(int n){ if(capacity<n)resize(n); return fact[n]; } T S(ll n,int k){ if(n<0)return 0; if(n<k)return 0; T ret=0; if(capacity<k)resize(k); rep(i,k+1){ ret+=fact[k]*factinv[i]*factinv[k-i]*T::raw(i).pow(n)*((k-i)&1?-1:1); } return ret*factinv[k]; } template<typename... INT> T O(INT...k){ int n=0; for(int i:initializer_list<int>{k...}){ if(i<0)return 0; n+=i; } if(capacity<n)resize(n); T ret=fact[n]; for(int i:initializer_list<int>{k...})ret*=factinv[i]; return ret; } }; using mint=modint1000000007; void SOLVE(){ int n; cin>>n; factorial_table<mint>table; rep(i,n){ string s; cin>>s; char c=s[0]; s.erase(s.begin()); s.erase(s.begin()); s.pop_back(); int g=-1; rep(j,s.size())if(s[j]==','){ g=j; break; } int n=stoi(s.substr(0,g)),k=stoi(s.substr(g+1)); if(c=='C')cout<<table.C(n,k).val()<<endl; else if(c=='P')cout<<table.P(n,k).val()<<endl; else cout<<table.H(n,k).val()<<endl; } }