結果
問題 | No.1011 Infinite Stairs |
ユーザー | n_vip |
提出日時 | 2020-03-20 21:24:29 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 157 ms / 2,000 ms |
コード長 | 5,050 bytes |
コンパイル時間 | 1,410 ms |
コンパイル使用メモリ | 134,280 KB |
実行使用メモリ | 127,656 KB |
最終ジャッジ日時 | 2024-07-17 11:44:21 |
合計ジャッジ時間 | 4,719 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 78 ms
127,640 KB |
testcase_01 | AC | 78 ms
127,532 KB |
testcase_02 | AC | 78 ms
127,536 KB |
testcase_03 | AC | 128 ms
127,532 KB |
testcase_04 | AC | 85 ms
127,504 KB |
testcase_05 | AC | 157 ms
127,656 KB |
testcase_06 | AC | 78 ms
127,596 KB |
testcase_07 | AC | 78 ms
127,544 KB |
testcase_08 | AC | 78 ms
127,544 KB |
testcase_09 | AC | 77 ms
127,464 KB |
testcase_10 | AC | 78 ms
127,544 KB |
testcase_11 | AC | 88 ms
127,484 KB |
testcase_12 | AC | 78 ms
127,580 KB |
testcase_13 | AC | 84 ms
127,588 KB |
testcase_14 | AC | 79 ms
127,552 KB |
testcase_15 | AC | 86 ms
127,484 KB |
testcase_16 | AC | 112 ms
127,508 KB |
testcase_17 | AC | 78 ms
127,500 KB |
testcase_18 | AC | 98 ms
127,468 KB |
testcase_19 | AC | 78 ms
127,596 KB |
testcase_20 | AC | 77 ms
127,548 KB |
testcase_21 | AC | 86 ms
127,440 KB |
testcase_22 | AC | 95 ms
127,428 KB |
testcase_23 | AC | 88 ms
127,508 KB |
testcase_24 | AC | 88 ms
127,632 KB |
testcase_25 | AC | 96 ms
127,548 KB |
testcase_26 | AC | 82 ms
127,512 KB |
ソースコード
#include <string> #include <vector> #include<iostream> #include<cstdio> #include<cstdlib> #include<stack> #include<queue> #include<cmath> #include<algorithm> #include<functional> #include<list> #include<deque> #include<bitset> #include<set> #include<map> #include<unordered_map> #include<unordered_set> #include<cstring> #include<sstream> #include<complex> #include<iomanip> #include<numeric> #include<cassert> #include<random> #define X first #define Y second #define pb push_back #define rep(X,Y) for (int (X) = 0;(X) < (Y);++(X)) #define reps(X,S,Y) for (int (X) = S;(X) < (Y);++(X)) #define rrep(X,Y) for (int (X) = (Y)-1;(X) >=0;--(X)) #define rreps(X,S,Y) for (int (X) = (Y)-1;(X) >= (S);--(X)) #define repe(X,Y) for ((X) = 0;(X) < (Y);++(X)) #define peat(X,Y) for (;(X) < (Y);++(X)) #define all(X) (X).begin(),(X).end() #define rall(X) (X).rbegin(),(X).rend() #define eb emplace_back #define UNIQUE(X) (X).erase(unique(all(X)),(X).end()) #define Endl endl #define NL <<"\n" using namespace std; using ll=long long; using pii=pair<int,int>; using pll=pair<ll,ll>; template<class T> using vv=vector<vector<T>>; template<class T> inline bool MX(T &l,const T &r){return l<r?l=r,1:0;} template<class T> inline bool MN(T &l,const T &r){return l>r?l=r,1:0;} //#undef NUIP #ifdef NUIP #include "benri.h" #else #define out(args...) #endif #ifdef __cpp_init_captures template<typename T>vector<T> table(int n, T v){ return vector<T>(n, v);} template <class... Args> auto table(int n, Args... args){auto val = table(args...); return vector<decltype(val)>(n, move(val));} #endif const ll MOD=1e9+7; //998244353 ll modpow(ll r,ll n,ll m=MOD){ ll re=1,d=r%m; if(n<0)(n%=m-1)+=m-1; for(;n;n/=2){ if(n&1)(re*=d)%=m; (d*=d)%=m; } return re; } template <int mod=MOD> struct modInt{ int v; modInt(int v=0):v(v){} modInt(ll v):v(v%MOD){} modInt operator+(const modInt &n)const{return v+n.v<mod ? v+n.v : v+n.v-mod;} modInt operator-(const modInt &n)const{return v-n.v<0 ? v-n.v+mod : v-n.v;} modInt operator*(const modInt &n)const{return ll(v)*n.v%mod;} modInt operator/(const modInt &n)const{return ll(v)*modpow(n.v%mod,-1,mod)%mod;} modInt operator+(const ll &n)const{return v+n<mod ? v+n : v+n-mod;} modInt operator-(const ll &n)const{return v-n<0 ? v-n+mod : v-n;} modInt operator*(const ll &n)const{return ll(v)*(n%mod)%mod;} modInt operator/(const ll &n)const{return ll(v)*modpow(n%mod,-1,mod)%mod;} modInt& operator+=(const modInt &n){v+=n.v; if(v>=mod) v-=mod; return *this;} modInt& operator-=(const modInt &n){v-=n.v; if(v<0) v+=mod; return *this;} modInt& operator*=(const modInt &n){v=ll(v)*n.v%mod; return *this;} modInt& operator/=(const modInt &n){v=ll(v)*modpow(n.v,-1,mod)%mod; return *this;} modInt& operator+=(const ll &n){v+=n; if(v>=mod) v-=mod; return *this;} modInt& operator-=(const ll &n){v-=n; if(v<0) v+=mod; return *this;} modInt& operator*=(const ll &n){v=ll(v)*n%mod; return *this;} modInt& operator/=(const ll &n){v=ll(v)*modpow(n,-1,mod)%mod; return *this;} }; #ifdef NUIP class MINT_FRAC____{ public: unordered_map<int,pii> dict; MINT_FRAC____(int n){ rep(p,n+1)reps(q,1,n+1)if(__gcd(p,q)==1){ dict[1ll*p*modpow(q,-1)%MOD]=pii(p,q); dict[MOD-1ll*p*modpow(q,-1)%MOD]=pii(-p,q); } } } Il1Il1Il1(1000); template<int mod> ostream& operator<<(ostream &os,const modInt<mod> &n){if(Il1Il1Il1.dict.count(n.v)) os<<n.v<<"("<<Il1Il1Il1.dict[n.v].X<<"/"<<Il1Il1Il1.dict[n.v].Y<<")";else os<<n.v;return os;}; #else template<int mod> ostream& operator<<(ostream &os,const modInt<mod> &n){return os<<n.v;}; #endif template<int mod> modInt<mod> operator+(const ll &n,const modInt<mod> &m){return m.v+n<mod ? m.v+n : m.v+n-mod;} template<int mod> modInt<mod> operator-(const ll &n,const modInt<mod> &m){return n-m.v<0 ? n-m.v+mod : n-m.v;} template<int mod> modInt<mod> operator*(const ll &n,const modInt<mod> &m){return ll(m.v)*(n%mod)%mod;} template<int mod> modInt<mod> operator/(const ll &n,const modInt<mod> &m){return modInt<mod>(n%mod)/m;} typedef modInt<MOD> mint; template <int mod> modInt<mod> modpow(modInt<mod> r,ll n){ modInt<mod> re(1); if(n<0)(n%=mod-1)+=mod-1; for(;n;n/=2){if(n&1) re*=r; r*=r;} return re;} vector<mint> fact,finv,inv; mint comb(ll n,ll r){ if(n<r||r<0)return 0; return fact[n]*finv[n-r]*finv[r];} class Doralion{ void Modinvs(vector<mint> &re,int n){ re.resize(n+1); re[1]=1; for(int i=2;i<=n;++i)re[i]=re[MOD%i]*(MOD-MOD/i);} void Facts(vector<mint> &re,int n){ re.resize(n+1); re[0]=1; rep(i,n)re[i+1]=re[i]*(i+1);} void Factinvs(vector<mint> &re,const vector<mint> &inv,int n){ re.resize(n+1); re[0]=1; rep(i,n)re[i+1]=re[i]*inv[i+1];} public: Doralion(int n){ Modinvs(inv,n); Facts(fact,n); Factinvs(finv,inv,n);} } doralion(1123456); mint dp[312][91234]; int main(){ ios_base::sync_with_stdio(false); cin.tie(0); cout<<fixed<<setprecision(0); int n,d,t; cin>>n>>d>>t; dp[0][0]=1; rep(i,n){ mint s=0; rep(j,t+1){ dp[i+1][j]+=s; s+=dp[i][j]; if(j>=d) s-=dp[i][j-d]; } } cout<<dp[n][t] NL; return 0; }