結果
問題 | No.1227 I hate ThREE |
ユーザー | hotman78 |
提出日時 | 2020-09-11 22:02:06 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 389 ms / 2,000 ms |
コード長 | 8,009 bytes |
コンパイル時間 | 2,383 ms |
コンパイル使用メモリ | 226,240 KB |
実行使用メモリ | 66,560 KB |
最終ジャッジ日時 | 2024-06-10 14:25:48 |
合計ジャッジ時間 | 8,729 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge5 |
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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 | 1 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 5 ms
5,376 KB |
testcase_04 | AC | 7 ms
5,376 KB |
testcase_05 | AC | 20 ms
5,888 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 1 ms
5,376 KB |
testcase_08 | AC | 30 ms
11,008 KB |
testcase_09 | AC | 25 ms
9,216 KB |
testcase_10 | AC | 14 ms
6,912 KB |
testcase_11 | AC | 259 ms
60,544 KB |
testcase_12 | AC | 302 ms
66,560 KB |
testcase_13 | AC | 5 ms
5,376 KB |
testcase_14 | AC | 25 ms
8,960 KB |
testcase_15 | AC | 42 ms
12,800 KB |
testcase_16 | AC | 109 ms
26,624 KB |
testcase_17 | AC | 62 ms
16,768 KB |
testcase_18 | AC | 159 ms
36,608 KB |
testcase_19 | AC | 126 ms
28,928 KB |
testcase_20 | AC | 178 ms
40,064 KB |
testcase_21 | AC | 3 ms
5,376 KB |
testcase_22 | AC | 124 ms
29,824 KB |
testcase_23 | AC | 359 ms
64,128 KB |
testcase_24 | AC | 336 ms
66,560 KB |
testcase_25 | AC | 389 ms
66,560 KB |
testcase_26 | AC | 277 ms
60,416 KB |
testcase_27 | AC | 297 ms
64,256 KB |
testcase_28 | AC | 301 ms
66,048 KB |
testcase_29 | AC | 308 ms
65,920 KB |
testcase_30 | AC | 290 ms
62,080 KB |
testcase_31 | AC | 290 ms
61,824 KB |
testcase_32 | AC | 300 ms
65,536 KB |
testcase_33 | AC | 281 ms
61,312 KB |
testcase_34 | AC | 291 ms
63,488 KB |
testcase_35 | AC | 277 ms
60,800 KB |
ソースコード
#line 1 "code.cpp" #define MOD 1000000007LL //#define MOD 998244353LL //#define MOD 18446744069414584321ULL #include<bits/stdc++.h> #line 1 "cpplib/util/template.hpp" #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #pragma GCC target("avx") #line 5 "cpplib/util/template.hpp" using namespace std; __attribute__((constructor))void init(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(15);} typedef long long lint; #define INF (1LL<<60) #define IINF (1<<30) #define EPS (1e-10) #define endl ('\n') typedef vector<lint> vec; typedef vector<vector<lint>> mat; typedef vector<vector<vector<lint>>> mat3; typedef vector<string> svec; typedef vector<vector<string>> smat; template<typename T>inline void numout(T t){bool f=0;for(auto i:t){cout<<(f?" ":"")<<i<INF/2?i:"INF";f=1;}cout<<endl;} template<typename T>inline void numout2(T t){for(auto i:t)numout(i);} template<typename T>inline void output(T t){bool f=0;for(auto i:t){cout<<(f?" ":"")<<i;f=1;}cout<<endl;} template<typename T>inline void output2(T t){for(auto i:t)output(i);} template<typename T>inline void _output(T t){bool f=0;for(lint i=0;i<t.size();i++){cout<<f?"":" "<<t[i];f=1;}cout<<endl;} template<typename T>inline void _output2(T t){for(lint i=0;i<t.size();i++)output(t[i]);} #define rep(i,...) for(auto i:range(__VA_ARGS__)) #define rrep(i,...) for(auto i:reversed(range(__VA_ARGS__))) #define repi(i,a,b) for(lint i=lint(a);i<(lint)(b);++i) #define rrepi(i,a,b) for(lint i=lint(b)-1;i>=lint(a);--i) #define irep(i) for(lint i=0;;++i) inline vector<long long> range(long long n){vector<long long>v(n);iota(v.begin(),v.end(),0LL);return v;} inline vector<long long> range(long long a,long long b){vector<long long>v(b-a);iota(v.begin(),v.end(),a);return v;} inline vector<long long> range(long long a,long long b,long long c){if((b-a+c-1)/c<=0)return vector<long long>();vector<long long>v((b-a+c-1)/c);for(int i=0;i<(int)v.size();++i)v[i]=i?v[i-1]+c:a;return v;} template<typename T>inline T reversed(T v){reverse(v.begin(),v.end());return v;} #define all(n) begin(n),end(n) #define dist(a,b,c,d) sqrt(pow(a-c,2)+pow(b-d,2)) template<typename T,typename E>bool chmin(T& s,const E& t){bool res=s>t;s=min<T>(s,t);return res;} template<typename T,typename E>bool chmax(T& s,const E& t){bool res=s<t;s=max<T>(s,t);return res;} const vector<lint> dx={1,0,-1,0,1,1,-1,-1}; const vector<lint> dy={0,1,0,-1,1,-1,1,-1}; #define SUM(v) accumulate(all(v),0LL) template<typename T,typename ...Args>auto make_vector(T x,int arg,Args ...args){if constexpr(sizeof...(args)==0)return vector<T>(arg,x);else return vector(arg,make_vector<T>(x,args...));} #line 1 "cpplib/math/mod_int.hpp" class mint { using u64 = std::uint_fast64_t; public: u64 a; constexpr mint(const long long x = 0)noexcept:a(x>=0?x%get_mod():get_mod()-(-x)%get_mod()){} constexpr u64 &value()noexcept{return a;} constexpr const u64 &value() const noexcept {return a;} constexpr mint operator+(const mint rhs)const noexcept{return mint(*this) += rhs;} constexpr mint operator-(const mint rhs)const noexcept{return mint(*this)-=rhs;} constexpr mint operator*(const mint rhs) const noexcept {return mint(*this) *= rhs;} constexpr mint operator/(const mint rhs) const noexcept {return mint(*this) /= rhs;} constexpr mint &operator+=(const mint rhs) noexcept { a += rhs.a; if (a >= get_mod())a -= get_mod(); return *this; } constexpr mint &operator-=(const mint rhs) noexcept { if (a<rhs.a)a += get_mod(); a -= rhs.a; return *this; } constexpr mint &operator*=(const mint rhs) noexcept { a = a * rhs.a % get_mod(); return *this; } constexpr mint operator++(int) noexcept { a += 1; if (a >= get_mod())a -= get_mod(); return *this; } constexpr mint operator--(int) noexcept { if (a<1)a += get_mod(); a -= 1; return *this; } constexpr mint &operator/=(mint rhs) noexcept { u64 exp=get_mod()-2; while (exp) { if (exp % 2) { *this *= rhs; } rhs *= rhs; exp /= 2; } return *this; } constexpr bool operator==(mint x) noexcept { return a==x.a; } constexpr bool operator!=(mint x) noexcept { return a!=x.a; } constexpr bool operator<(mint x) noexcept { return a<x.a; } constexpr bool operator>(mint x) noexcept { return a>x.a; } constexpr bool operator<=(mint x) noexcept { return a<=x.a; } constexpr bool operator>=(mint x) noexcept { return a>=x.a; } constexpr static int root(){ mint root = 2; while(root.pow((get_mod()-1)>>1).a==1)root++; return root.a; } constexpr mint pow(long long n){ long long x=a; mint ret = 1; while(n>0) { if(n&1)(ret*=x); (x*=x)%=get_mod(); n>>=1; } return ret; } constexpr mint inv(){ return pow(get_mod()-2); } static vector<mint> fac,ifac; static bool init; constexpr static int mx=10000001; void build(){ init=0; fac.resize(mx); ifac.resize(mx); fac[0]=1,ifac[0]=1; for(int i=1;i<mx;i++)fac[i]=fac[i-1]*i; ifac[mx-1]=fac[mx-1].inv(); for(int i=mx-2;i>=0;i--)ifac[i]=ifac[i+1]*(i+1); } mint comb(long long b){ if(init)build(); if(a==0&&b==0)return 1; if((long long)a<b)return 0; return fac[a]*ifac[a-b]*ifac[b]; } mint fact(){ if(init)build(); return fac[a]; } mint fact_inv(){ if(init)build(); return ifac[a]; } friend ostream& operator<<(ostream& lhs, const mint& rhs) noexcept { lhs << rhs.a; return lhs; } friend istream& operator>>(istream& lhs,mint& rhs) noexcept { lhs >> rhs.a; return lhs; } constexpr static u64 get_mod(){return MOD;} }; vector<mint> mint::fac; vector<mint> mint::ifac; bool mint::init=1; #line 1 "cpplib/data_structure/dsu/union_find.hpp" /** * @brief Union Find * @docs docs/union_find.md * @see https://ja.wikipedia.org/wiki/%E7%B4%A0%E9%9B%86%E5%90%88%E3%83%87%E3%83%BC%E3%82%BF%E6%A7%8B%E9%80%A0 */ class UF{ public: vector<int> data; int sz; public: UF(int sz):sz(sz){data.resize(sz,-1);} bool unite(int x,int y){ x=root(x);y=root(y); if(x==y)return 0; if(data[x]>data[y])swap(x,y); data[x]+=data[y]; data[y]=x; sz--; return 1; } inline int root(int x){return data[x]<0?x:data[x]=root(data[x]);} inline bool same(int x, int y){return root(x)==root(y);} inline int size(){return sz;} inline int size(int x){return -data[root(x)];} }; #line 8 "code.cpp" int main(){ lint n,c; cin>>n>>c; mat g(n); rep(i,n-1){ lint s,t; cin>>s>>t; s--;t--; g[s].push_back(t); g[t].push_back(s); } auto memo=make_vector<lint>(-1,n,min(8*n,c)+1); auto f=[&](auto f,lint now,lint p,lint val)->lint{ if(memo[now][val]!=-1)return memo[now][val]; mint ans=1; for(lint e:g[now]){ if(p==e)continue; mint tmp=0; if(val-3>=0)tmp+=f(f,e,now,val-3); if(val+3<c)tmp+=f(f,e,now,val+3); ans*=tmp; } return memo[now][val]=ans.a; }; if(4*n>=c){ mint ans2=0; rep(i,c){ ans2+=f(f,0,-1,i); } cout<<ans2<<endl; return 0; } vec ans(min(4*n,c)); rep(i,min(4*n,c)){ ans[i]=f(f,0,-1,i); } mint ans2=0; set<lint>used; rep(i,4*n){ used.insert(i); ans2+=ans[min(i,c-i)]; } rep(i,4*n){ if(used.count(c-i))continue; used.insert(c-i); ans2+=ans[min(c-i,i)]; } cout<<ans2+mint(c-used.size())*ans.back()<<endl; }