結果
問題 | No.1239 Multiplication -2 |
ユーザー | suta28407928 |
提出日時 | 2020-09-26 01:52:22 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,504 bytes |
コンパイル時間 | 962 ms |
コンパイル使用メモリ | 107,092 KB |
実行使用メモリ | 9,600 KB |
最終ジャッジ日時 | 2024-06-28 10:07:55 |
合計ジャッジ時間 | 3,330 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge1 |
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テストケース
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ソースコード
#include <iostream> #include <string> #include <cstdlib> #include <cmath> #include <vector> #include <unordered_map> #include <map> #include <set> #include <algorithm> #include <queue> #include <stack> #include <functional> #include <bitset> #include <assert.h> #include <unordered_map> #include <fstream> #include <ctime> #include <complex> using namespace std; typedef long long ll; typedef vector<ll> vl; typedef vector<vl> vvl; typedef vector<char> vc; typedef vector<string> vs; typedef vector<bool> vb; typedef vector<double> vd; typedef pair<ll,ll> P; typedef pair<int,int> pii; typedef vector<P> vpl; typedef tuple<ll,ll,ll> tapu; #define rep(i,n) for(int i=0; i<(n); i++) #define REP(i,a,b) for(int i=(a); i<(b); i++) #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() const int inf = 1<<30; const ll linf = 1LL<<62; const int MAX = 2020000; ll dy[8] = {1,-1,0,0,1,-1,1,-1}; ll dx[8] = {0,0,1,-1,1,-1,-1,1}; const double pi = acos(-1); const double eps = 1e-7; template<typename T1,typename T2> inline bool chmin(T1 &a,T2 b){ if(a>b){ a = b; return true; } else return false; } template<typename T1,typename T2> inline bool chmax(T1 &a,T2 b){ if(a<b){ a = b; return true; } else return false; } template<typename T> inline void print(T &a){ for(auto itr = a.begin(); itr != a.end(); itr++){ cout << *itr << " "; } cout << "\n"; } template<typename T1,typename T2> inline void print2(T1 a, T2 b){ cout << "debug: " << a << " " << b << "\n"; } template<typename T1,typename T2,typename T3> inline void print3(T1 a, T2 b, T3 c){ cout << "debug: " << a << " " << b << " " << c << "\n"; } void mark() {cout << "#" << "\n";} ll pcount(ll x) {return __builtin_popcountll(x);} //const int mod = 1e9 + 7; const int mod = 998244353; template <std::uint_fast64_t Modulus> class modint { using u64 = std::uint_fast64_t; public: u64 a; constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {} constexpr u64 &value() noexcept { return a; } constexpr const u64 &value() const noexcept { return a; } 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 { a += rhs.a; if (a >= Modulus) { a -= Modulus; } return *this; } constexpr modint &operator-=(const modint rhs) noexcept { if (a < rhs.a) { a += Modulus; } a -= rhs.a; return *this; } constexpr modint &operator*=(const modint rhs) noexcept { a = a * rhs.a % Modulus; return *this; } constexpr modint &operator/=(modint rhs) noexcept { u64 exp = Modulus - 2; while (exp) { if (exp % 2) { *this *= rhs; } rhs *= rhs; exp /= 2; } return *this; } }; using mint = modint<mod>; ll modpow(ll x, ll n, ll mod){ ll res = 1; while(n > 0){ if(n & 1) res = res * x % mod; x = x * x % mod; n >>= 1; } return res; } template<typename T> struct BIT{ vector<T> dat; ll sz; //all 1-indexed BIT(ll sz) : sz(sz){ dat.assign(++sz, 0); } T sum(ll k){ T ret = 0; for(++k; k > 0; k -= k & -k) ret += dat[k]; return (ret); } void add(ll k, T x){ for(++k; k < dat.size(); k += k & -k) dat[k] += x; } ll get(T k){ if(k <= 0) return 0; ll ret = 0; int n = 1; while(n < sz) n *= 2; for(int i=n/2; i>0; i/=2){ if(ret+i < sz && dat[ret+i] < k){ k -= dat[ret+i]; ret += i; } } return ret; } }; int main(){ int n; cin >> n; vl a(n); rep(i,n) cin >> a[i]; vl nxt(n,n); for(int i=n-1; i>=1; i--){ nxt[i-1] = nxt[i]; if(abs(a[i]) == 2 || a[i] == 0) nxt[i-1] = i; } mint p = 0, q = modpow(2,n-1,mod); BIT<mint> m(n), M(n); bool plus = true; rep(i,n){ if(a[i] < 0) plus = !plus; if(a[i] == 0) continue; if(plus) M.add(i,modpow(2,n-i-2,mod)); else m.add(i,modpow(2,n-i-2,mod)); } plus = true; rep(i,n){ if(a[i] == 0) continue; int l,r; if(abs(a[i]) == 2){ l = i; r = nxt[i]; }else{ l = nxt[i]; r = nxt[l]; } if(l == n) break; if(a[l] != 0){ if(plus) p += (m.sum(r-1) - m.sum(l-1)) * modpow(2,i-1,mod); else p += (M.sum(r-1) - M.sum(l-1)) * modpow(2,i-1,mod); } if(a[i] < 0) plus = !plus; } cout << p.value() << "\n"; cout << (p / q).value() << "\n"; }