結果
問題 | No.1304 あなたは基本が何か知っていますか?私は知っています. |
ユーザー |
![]() |
提出日時 | 2020-12-02 15:57:29 |
言語 | C++17(gcc12) (gcc 12.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 82 ms / 2,000 ms |
コード長 | 3,622 bytes |
コンパイル時間 | 12,904 ms |
コンパイル使用メモリ | 290,796 KB |
最終ジャッジ日時 | 2025-01-16 13:19:58 |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 44 WA * 9 RE * 21 |
ソースコード
#pragma GCC target("avx2")#pragma GCC optimize("O3")#pragma GCC optimize("unroll-loops")#include <bits/stdc++.h>using namespace std;using ll = long long;template <class T> using vec = vector<T>;template <class T> using vvec = vector<vec<T>>;template<class T> bool chmin(T& a,T b){if(a>b) {a = b; return true;} return false;}template<class T> bool chmax(T& a,T b){if(a<b) {a = b; return true;} return false;}#define rep(i,n) for(int i=0;i<(n);i++)#define drep(i,n) for(int i=(n)-1;i>=0;i--)#define all(x) (x).begin(),(x).end()#define debug(x) cerr << #x << " = " << (x) << endl;constexpr ll mod = 998244353;struct mint {ll x;mint(ll x=0):x((x%mod+mod)%mod){}friend ostream &operator<<(ostream& os,const mint& a){return os << a.x;}friend istream &operator>>(istream& is,mint& a){ll t;is >> t;a = mint(t);return (is);}mint& operator+=(const mint a) {if ((x += a.x) >= mod) x -= mod;return *this;}mint& operator-=(const mint a) {if ((x += mod-a.x) >= mod) x -= mod;return *this;}mint& operator*=(const mint a) {(x *= a.x) %= mod;return *this;}mint operator+(const mint a) const {mint res(*this);return res+=a;}mint operator-(const mint a) const {mint res(*this);return res-=a;}mint operator*(const mint a) const {mint res(*this);return res*=a;}mint pow(ll t) const {if (!t) return 1;mint a = pow(t>>1);a *= a;if (t&1) a *= *this;return a;}// for prime modmint inv() const {return pow(mod-2);}mint& operator/=(const mint a) {return (*this) *= a.inv();}mint operator/(const mint a) const {mint res(*this);return res/=a;}bool operator==(const mint a)const{return x==a.x;}};vec<mint> xor_convolution(vec<mint>& A,vec<mint>& B){mint tinv = ((mint) 2).inv();auto fwt = [&](vec<mint>& F){int n = F.size();for(int i=1;i<n;i<<=1){for(int j=0;j<n;j++){if((j&i)==0){mint x = F[j],y = F[j|i];F[j] = x+y,F[j|i] = x-y;}}}};auto ifwt = [&](vec<mint>& F){int n = F.size();for(int i=1;i<n;i<<=1){for(int j=0;j<n;j++){if((j&i)==0){mint x = F[j],y = F[j|i];F[j] = (x+y)*tinv,F[j|i] = (x-y)*tinv;}}}};fwt(A);fwt(B);vec<mint> C(A.size());rep(i,A.size()) C[i] = A[i]*B[i];ifwt(C);return C;}int main(){cin.tie(0);ios::sync_with_stdio(false);int N,K,X,Y;cin >> N >> K >> X >> Y;vec<int> A(K);rep(i,K) cin >> A[i];sort(all(A));A.erase(unique(all(A)),A.end());K = A.size();int B = 10;int S = 1<<B;vvec<mint> cnt(S,vec<mint>(S));auto dfs = [&](auto&& self,int len,int x,int last)->void{if(len==N/2){cnt[last][x] += 1;return ;}rep(i,K) if(A[i]!=last) self(self,len+1,x^A[i],A[i]);};dfs(dfs,0,0,-1);vvec<mint> R(S+1,vec<mint>(S));drep(i,S){rep(j,S){R[i][j] = R[i+1][j]+cnt[i][j];}}mint ans = 0;rep(i,S-1){auto res = xor_convolution(cnt[i],R[i+1]);rep(j,S) if(X<=j && j<=Y) ans += res[j];}cout << ans*2 << "\n";}