結果
問題 | No.895 MESE |
ユーザー | rniya |
提出日時 | 2020-10-04 11:15:25 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 16 ms / 2,000 ms |
コード長 | 5,791 bytes |
コンパイル時間 | 1,916 ms |
コンパイル使用メモリ | 170,920 KB |
実行使用メモリ | 7,936 KB |
最終ジャッジ日時 | 2024-07-19 07:18:48 |
合計ジャッジ時間 | 2,841 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 7 ms
6,812 KB |
testcase_01 | AC | 7 ms
6,940 KB |
testcase_02 | AC | 7 ms
6,944 KB |
testcase_03 | AC | 6 ms
6,944 KB |
testcase_04 | AC | 7 ms
6,940 KB |
testcase_05 | AC | 7 ms
6,940 KB |
testcase_06 | AC | 7 ms
6,940 KB |
testcase_07 | AC | 8 ms
6,944 KB |
testcase_08 | AC | 7 ms
6,940 KB |
testcase_09 | AC | 7 ms
6,940 KB |
testcase_10 | AC | 7 ms
6,944 KB |
testcase_11 | AC | 6 ms
6,940 KB |
testcase_12 | AC | 7 ms
6,940 KB |
testcase_13 | AC | 12 ms
7,296 KB |
testcase_14 | AC | 12 ms
7,296 KB |
testcase_15 | AC | 13 ms
7,424 KB |
testcase_16 | AC | 11 ms
7,424 KB |
testcase_17 | AC | 11 ms
7,296 KB |
testcase_18 | AC | 15 ms
7,808 KB |
testcase_19 | AC | 15 ms
7,808 KB |
testcase_20 | AC | 14 ms
7,936 KB |
testcase_21 | AC | 15 ms
7,936 KB |
testcase_22 | AC | 15 ms
7,808 KB |
testcase_23 | AC | 16 ms
7,808 KB |
testcase_24 | AC | 15 ms
7,936 KB |
testcase_25 | AC | 13 ms
7,808 KB |
testcase_26 | AC | 15 ms
7,808 KB |
testcase_27 | AC | 14 ms
7,808 KB |
testcase_28 | AC | 14 ms
7,808 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define LOCAL #pragma region Macros typedef long long ll; #define ALL(x) (x).begin(),(x).end() const long long MOD=1000000007; // const long long MOD=998244353; const int INF=1e9; const long long IINF=1e18; const int dx[4]={1,0,-1,0},dy[4]={0,1,0,-1}; const char dir[4]={'D','R','U','L'}; template<typename T> istream &operator>>(istream &is,vector<T> &v){ for (T &x:v) is >> x; return is; } template<typename T> ostream &operator<<(ostream &os,const vector<T> &v){ for (int i=0;i<v.size();++i){ os << v[i] << (i+1==v.size()?"": " "); } return os; } template<typename T,typename U> ostream &operator<<(ostream &os,const pair<T,U> &p){ os << '(' << p.first << ',' << p.second << ')'; return os; } template<typename T,typename U> ostream &operator<<(ostream &os,const map<T,U> &m){ os << '{'; for (auto itr=m.begin();itr!=m.end();++itr){ os << '(' << itr->first << ',' << itr->second << ')'; if (++itr!=m.end()) os << ','; --itr; } os << '}'; return os; } template<typename T> ostream &operator<<(ostream &os,const set<T> &s){ os << '{'; for (auto itr=s.begin();itr!=s.end();++itr){ os << *itr; if (++itr!=s.end()) os << ','; --itr; } os << '}'; return os; } void debug_out(){cerr << '\n';} template<class Head,class... Tail> void debug_out(Head&& head,Tail&&... tail){ cerr << head; if (sizeof...(Tail)>0) cerr << ", "; debug_out(move(tail)...); } #ifdef LOCAL #define debug(...) cerr << " ";\ cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n';\ cerr << " ";\ debug_out(__VA_ARGS__) #else #define debug(...) 42 #endif template<typename T> T gcd(T x,T y){return y!=0?gcd(y,x%y):x;} template<typename T> T lcm(T x,T y){return x/gcd(x,y)*y;} template<class T1,class T2> inline bool chmin(T1 &a,T2 b){ if (a>b){a=b; return true;} return false; } template<class T1,class T2> inline bool chmax(T1 &a,T2 b){ if (a<b){a=b; return true;} return false; } #pragma endregion template<uint32_t mod> class modint{ using i64=int64_t; using u32=uint32_t; using u64=uint64_t; public: u32 v; constexpr modint(const i64 x=0) noexcept :v(x<0?mod-1-(-(x+1)%mod):x%mod){} constexpr u32 &value() noexcept {return v;} constexpr const u32 &value() const noexcept {return v;} constexpr modint operator+(const modint &rhs) const noexcept {return modint(*this)+=rhs;} constexpr modint operator-(const modint &rhs) const noexcept {return modint(*this)-=rhs;} constexpr modint operator*(const modint &rhs) const noexcept {return modint(*this)*=rhs;} constexpr modint operator/(const modint &rhs) const noexcept {return modint(*this)/=rhs;} constexpr modint &operator+=(const modint &rhs) noexcept { v+=rhs.v; if (v>=mod) v-=mod; return *this; } constexpr modint &operator-=(const modint &rhs) noexcept { if (v<rhs.v) v+=mod; v-=rhs.v; return *this; } constexpr modint &operator*=(const modint &rhs) noexcept { v=(u64)v*rhs.v%mod; return *this; } constexpr modint &operator/=(const modint &rhs) noexcept { return *this*=rhs.pow(mod-2); } constexpr modint pow(u64 exp) const noexcept { modint self(*this),res(1); while (exp>0){ if (exp&1) res*=self; self*=self; exp>>=1; } return res; } constexpr modint &operator++() noexcept {if (++v==mod) v=0; return *this;} constexpr modint &operator--() noexcept {if (v==0) v=mod; return --v,*this;} constexpr modint operator++(int) noexcept {modint t=*this; return ++*this,t;} constexpr modint operator--(int) noexcept {modint t=*this; return --*this,t;} template<class T> friend constexpr modint operator+(T x,modint y) noexcept {return modint(x)+y;} template<class T> friend constexpr modint operator-(T x,modint y) noexcept {return modint(x)-y;} template<class T> friend constexpr modint operator*(T x,modint y) noexcept {return modint(x)*y;} template<class T> friend constexpr modint operator/(T x,modint y) noexcept {return modint(x)/y;} constexpr bool operator==(const modint &rhs) const noexcept {return v==rhs.v;} constexpr bool operator!=(const modint &rhs) const noexcept {return v!=rhs.v;} constexpr bool operator!() const noexcept {return !v;} friend istream &operator>>(istream &s,modint &rhs) noexcept { i64 v; rhs=modint{(s>>v,v)}; return s; } friend ostream &operator<<(ostream &s,const modint &rhs) noexcept { return s<<rhs.v; } }; using mint=modint<MOD>; template<class M> struct Combination{ vector<M> _fac,_inv,_finv; Combination(int n):_fac(n+1),_inv(n+1),_finv(n+1){ _fac[0]=_finv[n]=_inv[0]=1; for (int i=1;i<=n;++i) _fac[i]=_fac[i-1]*i; _finv[n]/=_fac[n]; for (int i=n-1;i>=0;--i) _finv[i]=_finv[i+1]*(i+1); for (int i=1;i<=n;++i) _inv[i]=_finv[i]*_fac[i-1]; } M fac(int k) const {return _fac[k];} M finv(int k) const {return _finv[k];} M inv(int k) const {return _inv[k];} M P(int n,int r) const { if (n<0||r<0||n<r) return 0; return _fac[n]*_finv[n-r]; } M C(int n,int r) const { if (n<0||r<0||n<r) return 0; return _fac[n]*_finv[r]*_finv[n-r]; } }; int main(){ cin.tie(0); ios::sync_with_stdio(false); Combination<mint> COM(300010); int a,b,c; cin >> a >> b >> c; vector<mint> POW(a+b+c+1,1); for (int i=0;i<a+b+c;++i) POW[i+1]=POW[i]*2; mint ans=0; for (int i=0;i<a+b+c-2;++i){ ans+=(COM.C(a+b+c-2,a-1)-COM.C(i,a-(a+b+c-i-1)))*COM.C(b+c-2,b-1)*POW[i]; } cout << ans << '\n'; }