結果
問題 | No.1239 Multiplication -2 |
ユーザー | akua |
提出日時 | 2022-09-25 17:39:29 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 259 ms / 2,000 ms |
コード長 | 6,985 bytes |
コンパイル時間 | 4,253 ms |
コンパイル使用メモリ | 199,796 KB |
実行使用メモリ | 47,032 KB |
最終ジャッジ日時 | 2024-06-01 22:24:39 |
合計ジャッジ時間 | 9,882 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 | 29 ms
34,460 KB |
testcase_01 | AC | 31 ms
34,504 KB |
testcase_02 | AC | 30 ms
34,456 KB |
testcase_03 | AC | 31 ms
34,588 KB |
testcase_04 | AC | 30 ms
34,552 KB |
testcase_05 | AC | 31 ms
34,420 KB |
testcase_06 | AC | 30 ms
34,556 KB |
testcase_07 | AC | 28 ms
34,480 KB |
testcase_08 | AC | 28 ms
34,512 KB |
testcase_09 | AC | 30 ms
34,460 KB |
testcase_10 | AC | 29 ms
34,452 KB |
testcase_11 | AC | 29 ms
34,472 KB |
testcase_12 | AC | 29 ms
34,464 KB |
testcase_13 | AC | 29 ms
34,480 KB |
testcase_14 | AC | 29 ms
34,556 KB |
testcase_15 | AC | 96 ms
37,748 KB |
testcase_16 | AC | 148 ms
40,900 KB |
testcase_17 | AC | 256 ms
46,644 KB |
testcase_18 | AC | 250 ms
46,464 KB |
testcase_19 | AC | 249 ms
46,708 KB |
testcase_20 | AC | 255 ms
46,560 KB |
testcase_21 | AC | 252 ms
46,784 KB |
testcase_22 | AC | 243 ms
46,668 KB |
testcase_23 | AC | 186 ms
45,588 KB |
testcase_24 | AC | 184 ms
45,600 KB |
testcase_25 | AC | 152 ms
41,232 KB |
testcase_26 | AC | 159 ms
41,364 KB |
testcase_27 | AC | 83 ms
37,700 KB |
testcase_28 | AC | 226 ms
46,324 KB |
testcase_29 | AC | 249 ms
46,608 KB |
testcase_30 | AC | 117 ms
40,228 KB |
testcase_31 | AC | 163 ms
41,284 KB |
testcase_32 | AC | 259 ms
47,032 KB |
testcase_33 | AC | 194 ms
45,592 KB |
testcase_34 | AC | 171 ms
41,296 KB |
testcase_35 | AC | 98 ms
37,848 KB |
testcase_36 | AC | 91 ms
37,572 KB |
ソースコード
#include <atcoder/all> #include <iostream> // cout, endl, cin #include <string> // string, to_string, stoi #include <vector> // vector #include <algorithm> // min, max, swap, sort, reverse, lower_bound, upper_bound #include <utility> // pair, make_pair #include <tuple> // tuple, make_tuple #include <cstdint> // int64_t, int*_t #include <cstdio> // printf #include <map> // map #include <queue> // queue, priority_queue #include <set> // set #include <stack> // stack #include <deque> // deque #include <unordered_map> // unordered_map #include <unordered_set> // unordered_set #include <bitset> // bitset #include <cctype> // isupper, islower, isdigit, toupper, tolower #include <math.h> #include <iomanip> using namespace std; using namespace atcoder; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define repi(i, a, b) for (int i = (int)(a); i < (int)(b); i++) typedef long long ll; typedef unsigned long long ull; const ll inf=1e18; using graph = vector<vector<int> > ; using P= pair<ll,ll>; using vi=vector<int>; using vvi=vector<vi>; using vll=vector<ll>; using vvll=vector<vll>; using vp=vector<P>; using vpp=vector<vp>; //string T="ABCDEFGHIJKLMNOPQRSTUVWXYZ"; //string S="abcdefghijklmnopqrstuvwxyz"; //g++ main.cpp -std=c++14 -I . //cout <<setprecision(20); //cout << fixed << setprecision(10); //cin.tie(0); ios::sync_with_stdio(false); const double PI = acos(-1); int vx[]={0,1,0,-1,-1,1,1,-1},vy[]={1,0,-1,0,1,1,-1,-1}; ll pow_pow(ll x,ll n,ll mod){ if(n==0) return 1; x%=mod; ll res=pow_pow(x*x%mod,n/2,mod); if(n&1)res=res*x%mod; return res; } struct UnionFind { vector<int> par, siz; UnionFind(int n) : par(n, -1) , siz(n, 1) { } int root(int x) { if (par[x] == -1) return x; else return par[x] = root(par[x]); } bool issame(int x, int y) { return root(x) == root(y); } bool unite(int x, int y) { x = root(x), y = root(y); if (x == y) return false; if (siz[x] < siz[y]) swap(x, y); par[y] = x; siz[x] += siz[y]; return true; } int size(int x) { return siz[root(x)]; } }; ll gcd(ll x,ll y){ if(y==0)return x; return gcd(y,x%y); } ll lcm(ll x,ll y){ return ll(x/gcd(x,y))*y; } template<class T> bool chmin(T& a, T b) { if (a > b) { a = b; return true; } else return false; } template<class T> bool chmax(T& a, T b) { if (a < b) { a = b; return true; } else return false; } // https://youtu.be/L8grWxBlIZ4?t=9858 // https://youtu.be/ERZuLAxZffQ?t=4807 : optimize // https://youtu.be/8uowVvQ_-Mo?t=1329 : division const ll mod =998244353; struct mint { ll x; // typedef long long ll; mint(ll x=0):x((x%mod+mod)%mod){} mint operator-() const { return mint(-x);} 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 { return mint(*this) += a;} mint operator-(const mint a) const { return mint(*this) -= a;} mint operator*(const mint a) const { return mint(*this) *= 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 mod mint inv() const { return pow(mod-2);} mint& operator/=(const mint a) { return *this *= a.inv();} mint operator/(const mint a) const { return mint(*this) /= a;} }; istream& operator>>(istream& is, const mint& a) { return is >> a.x;} ostream& operator<<(ostream& os, const mint& a) { return os << a.x;} // combination mod prime // https://www.youtube.com/watch?v=8uowVvQ_-Mo&feature=youtu.be&t=1619 struct combination { vector<mint> fact, ifact; combination(int n):fact(n+1),ifact(n+1) { //assert(n < mod); fact[0] = 1; for (int i = 1; i <= n; ++i) fact[i] = fact[i-1]*i; ifact[n] = fact[n].inv(); for (int i = n; i >= 1; --i) ifact[i-1] = ifact[i]*i; } mint operator()(int n, int k) { if (k < 0 || k > n) return 0; return fact[n]*ifact[k]*ifact[n-k]; } mint p(int n, int k) { return fact[n]*ifact[n-k]; } } c(2000005); using vm=vector<mint> ; using vvm=vector<vm> ; ll sqrt_(ll x) { ll l = 0, r = ll(3e9)+1; while (l+1<r) { ll c = (l+r)/2; if (c*c <= x) l = c; else r = c; } return l; } int valid(int x,int y,int h,int w){ if(x>=0 && y>=0 && x<h && y<w)return 1; else return 0; } ll comb[301][301]; void init_comb(int M){ comb[0][0]=1; for(int i=1; i<=300; i++){ for(int j=0; j<=i; j++){ if(j==0 || j==i)comb[i][j]=1; else comb[i][j]=(comb[i-1][j]+comb[i-1][j-1])%M; } } } ll nCk(int n,int k){ return comb[n][k]; } struct edge{ int to; ll cost; edge(int to,ll cost) : to(to),cost(cost) {} }; using ve=vector<edge>; using vve =vector<ve>; map<ll,ll>d; void comp(vll&a){ set<ll>s(a.begin(),a.end()); int cnt=0; for(auto y:s)d[y]=cnt++; for(auto&y:a)y=d[y]; } //snuke template<typename T> struct Matrix { int h, w; vector<vector<T> > d; Matrix() {} Matrix(int h, int w, T val=0): h(h), w(w), d(h, vector<T>(w,val)) {} Matrix& unit() { //assert(h == w); rep(i,h) d[i][i] = 1; return *this; } const vector<T>& operator[](int i) const { return d[i];} vector<T>& operator[](int i) { return d[i];} Matrix operator*(const Matrix& a) const { //assert(w == a.h); Matrix r(h, a.w); rep(i,h)rep(k,w)rep(j,a.w) { r[i][j] += d[i][k]*a[k][j]; } return r; } Matrix pow(ll t) const { // assert(h == w); if (!t) return Matrix(h,h).unit(); if (t == 1) return *this; Matrix r = pow(t>>1); r = r*r; if (t&1) r = r*(*this); return r; } }; using S=mint; S op(S a,S b){ return a+b; } S e(){ return 0; } int main(){cin.tie(0); ios::sync_with_stdio(false); int n; cin >> n; vi a(n);rep(i,n)cin >> a[i]; vi id; id.push_back(0); rep(i,n)if(abs(a[i])==2 || a[i]==0)id.push_back(i+1); id.push_back(n+1); vi sum(n+1); vector<int> sum2(n+1); rep(i,n){ sum[i+1]=sum[i]; sum2[i+1]=sum2[i]; if(abs(a[i])==2)sum[i+1]++; if(a[i]<0)sum2[i+1]++; sum2[i+1]%=2; if(a[i]==0)sum2[i+1]=0; } segtree<S,op,e> segl(n+1),segr(n+1); rep(i,n+1){ if(!sum2[i])segl.set(i,pow_pow(2,max(0,i-1),mod)); else segr.set(i,pow_pow(2,max(0,n-i-1),mod)); } mint ans=0; int cnt=0; auto f=[&](){ repi(i,1,id.size()-1){ int index=id[i]; if(a[index-1]==0)continue; int l=id[i-1]+1,r=id[i+1]-1; mint now=segr.prod(index,r+1); now*=segl.prod(l-1,index); ans+=now; } cnt++; }; f(); rep(i,n+1)segl.set(i,0),segr.set(i,0); rep(i,n+1){ if(sum2[i])segl.set(i,pow_pow(2,max(0,i-1),mod)); else segr.set(i,pow_pow(2,max(0,n-i-1),mod)); } f(); ans/=pow_pow(2,n-1,mod); cout << ans << endl; }