結果
問題 | No.196 典型DP (1) |
ユーザー | eQe |
提出日時 | 2022-02-25 11:28:12 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 228 ms / 2,000 ms |
コード長 | 4,329 bytes |
コンパイル時間 | 5,001 ms |
コンパイル使用メモリ | 280,148 KB |
実行使用メモリ | 113,792 KB |
最終ジャッジ日時 | 2024-07-03 04:15:39 |
合計ジャッジ時間 | 10,080 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 2 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 4 ms
5,376 KB |
testcase_16 | AC | 7 ms
5,376 KB |
testcase_17 | AC | 11 ms
5,376 KB |
testcase_18 | AC | 19 ms
5,376 KB |
testcase_19 | AC | 23 ms
5,504 KB |
testcase_20 | AC | 30 ms
5,376 KB |
testcase_21 | AC | 31 ms
5,376 KB |
testcase_22 | AC | 30 ms
5,504 KB |
testcase_23 | AC | 110 ms
43,904 KB |
testcase_24 | AC | 85 ms
31,104 KB |
testcase_25 | AC | 80 ms
27,648 KB |
testcase_26 | AC | 227 ms
113,792 KB |
testcase_27 | AC | 228 ms
113,664 KB |
testcase_28 | AC | 227 ms
113,792 KB |
testcase_29 | AC | 228 ms
113,792 KB |
testcase_30 | AC | 227 ms
113,664 KB |
testcase_31 | AC | 191 ms
5,376 KB |
testcase_32 | AC | 191 ms
5,376 KB |
testcase_33 | AC | 193 ms
5,376 KB |
testcase_34 | AC | 190 ms
5,376 KB |
testcase_35 | AC | 190 ms
5,376 KB |
testcase_36 | AC | 175 ms
5,376 KB |
testcase_37 | AC | 35 ms
5,376 KB |
testcase_38 | AC | 175 ms
5,376 KB |
testcase_39 | AC | 142 ms
5,376 KB |
testcase_40 | AC | 186 ms
5,376 KB |
testcase_41 | AC | 2 ms
5,376 KB |
testcase_42 | AC | 2 ms
5,376 KB |
testcase_43 | AC | 2 ms
5,376 KB |
ソースコード
#include <atcoder/all> using namespace atcoder; #include <bits/stdc++.h> #define all(a) (a.begin()),(a.end()) #define rall(a) (a.rbegin()),(a.rend()) #define bitcnt(S) __builtin_popcountll(S) using namespace std; using ll=long long; using ld=long double; using pll=pair<ll,ll>; template<class T>using ascending_priority_queue = priority_queue<T, vector<T>, greater<T>>; template<class T>using descending_priority_queue = priority_queue<T>; template<class T>bool chmax(T &a, const T &b) {if(a<b) {a=b; return 1;} return 0;} template<class T>bool chmin(T &a, const T &b) {if(b<a) {a=b; return 1;} return 0;} istream& operator >> (istream& is, modint1000000007& x) { unsigned int t; is >> t; x=t; return is; } istream& operator >> (istream& is, modint998244353& x) { unsigned int t; is >> t; x=t; return is; } istream& operator >> (istream& is, modint& x) { unsigned int t; is >> t; x=t; return is; } ostream& operator << (ostream& os, const modint1000000007& x) { os << x.val(); return os; } ostream& operator << (ostream& os, const modint998244353& x) { os << x.val(); return os; } ostream& operator << (ostream& os, const modint& x) { os << x.val(); return os; } template<class T1, class T2>istream& operator >> (istream& is, pair<T1,T2>& p) { is >> p.first >> p.second; return is; } template<class T1, class T2>ostream& operator << (ostream& os, const pair<T1,T2>& p) { os << p.first << " " << p.second; return os;} template<class T>istream& operator >> (istream& is, vector<T>& v) { for(T& x:v) is >> x; return is; } template<class T>ostream& operator << (ostream& os, const vector<T>& v) {for(int i=0;i<(int)v.size();i++) {os << v[i] << (i+1 == v.size() ? "":" ");} return os;} template<class... A> void pt() { std::cout << "\n"; } template<class... A> void pt_rest() { std::cout << "\n"; } template<class T, class... A> void pt_rest(const T& first, const A&... rest) { std::cout << " " << first; pt_rest(rest...); } template<class T, class... A> void pt(const T& first, const A&... rest) { std::cout << first; pt_rest(rest...); } template<typename V, typename H> void resize(vector<V>& vec, const H head){ vec.resize(head); } template<typename V, typename H, typename ... T> void resize(vector<V>& vec, const H& head, const T ... tail){ vec.resize(head); for(auto& v: vec) resize(v, tail...); } template<typename V, typename T> void fill(V& x, const T& val){ x = val; } template<typename V, typename T> void fill(vector<V>& vec, const T& val){ for(auto& v: vec) fill(v, val); } template<typename H> void vin(istream& is, const int idx, vector<H>& head){ is >> head[idx]; } template<typename H, typename ... T> void vin(istream& is, const int idx, vector<H>& head, T& ... tail){ vin(is >> head[idx], idx, tail...); } template<typename H, typename ... T> void vin(istream& is, vector<H>& head, T& ... tail){ for(int i=0; i<(int)head.size(); i++) vin(is, i, head, tail...); } template<typename H, typename ... T> void vin(vector<H>& head, T& ... tail){ vin(cin, head, tail...); } map<ll,ll>divisor(ll n){map<ll,ll>res;for(ll i=1;i*i<=n;i++)if(n%i==0){res[i]++;res[n/i]++;}return res;} map<ll,ll>factrization(ll n){map<ll,ll>res;for(ll i=2;i*i<=n;i++)while(n%i==0){res[i]++;n/=i;}if(n>1)res[n]++;return res;} static const ll inf=1e18+7; static const ld pi=acos(-1); static const ld eps=1e-10; using v1=vector<ll>; using v2=vector<v1>; using v3=vector<v2>; using v4=vector<v3>; using S=ll; S op(S a,S b){return a+b;} S e(){return 0;} int main(void){ cin.tie(nullptr); ios::sync_with_stdio(false); ll N,K;cin>>N>>K; v2 g(N); for(ll i=0;i<N-1;i++){ ll a,b;cin>>a>>b; g[a].emplace_back(b); g[b].emplace_back(a); } using mint=modint1000000007; vector<vector<vector<mint>>>dp(N); function<void(ll,ll)>f=[&](ll u,ll p){ resize(dp[u],2,2); dp[u][0][0]=1; dp[u][1][1]=1; for(auto v:g[u])if(v!=p){ f(v,u); ll n=dp[u].size(); ll m=dp[v].size(); vector<vector<mint>>nxt;resize(nxt,n+m-1,2); for(ll j=0;j<n;j++){ for(ll k=0;k<2;k++){ for(ll p=0;p<m;p++){ for(ll q=k;q<2;q++){ ll nj=j+p; ll nk=k&q; nxt[nj][nk]+=dp[u][j][k]*dp[v][p][q]; } } } } swap(dp[u],nxt); } }; f(0,-1); pt(dp[0][K][0]+dp[0][K][1]); }