제출 #446881

#제출 시각아이디문제언어결과실행 시간메모리
446881Return_0Matching (CEOI11_mat)C++17
9 / 100
312 ms25416 KiB
#pragma GCC optimize("Ofast,unroll-loops") // #pragma comment(linker, "/stack:200000000") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma") #include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> using namespace std; using namespace __gnu_pbds; typedef int ll; typedef long long lol; typedef long double ld; typedef pair <ll, ll> pll; #ifdef SINA #define dbg(...) __f(#__VA_ARGS__, __VA_ARGS__) template <typename Arg1> void __f(const char* name, Arg1&& arg1) { cout << name << " : " << arg1 << std::endl; } template <typename Arg1, typename... Args> void __f (const char* names, Arg1&& arg1, Args&&... args) { const char* comma = strchr(names + 1, ',');cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...); } #define dbg2(x, j, n) cout<< #x << " : "; output((j), (n), x, 1); cout.flush(); #else #define dbg(...) 0 #define dbg2(x, j, n) 0 #endif #define SZ(x) ((ll)((x).size())) #define File(s, t) freopen(s ".txt", "r", stdin); freopen(t ".txt", "w", stdout); #define input(j, n, a) for (int _i = (j); _i < (n)+(j); _i++) cin>> a[_i]; #define output(j, n, a, t) for (int _i = (j); _i < (n)+(j); _i++) cout<< a[_i] << (((t) && _i != (n)+(j)-1)? ' ' : '\n'); #define kill(x) return cout<< (x) << endl, 0 #define cl const ll #define fr first #define sc second #define lc (v << 1) #define rc (lc | 1) #define mid ((l + r) >> 1) #define All(x) (x).begin(), (x).end() cl inf = sizeof(ll) == 4 ? (1e9 + 10) : (3e18), mod = 1e9 + 7, MOD = 998244353; template <class A,class B> ostream& operator << (ostream& out,const pair<A,B>&a){return out<<'('<<a.first<<", "<<a.second<<')';} template <class A> ostream& operator << (ostream& out, const vector<A> &a) { out<< '['; for (int i = -1; ++i < int(a.size());) out<< a[i] << (i + 1 < int(a.size()) ? ", " : ""); return out<<']'; } template <class T, typename _t = less <T> > using Tree = tree <T, null_type, _t, rb_tree_tag, tree_order_statistics_node_update>; cl N = 1e6 + 3, base = 1e6 + 7; inline ll add (ll x, ll y) { x += y; return x >= mod ? x - mod : x; } inline ll sub (ll x, ll y) { x -= y; return x < 0 ? x + mod : x; } #define mul(x, y) ((lol) (x) * (y) % mod) inline ll bpow (ll x, ll n) { ll t = 1; for (; n; n >>= 1, x = mul(x, x)) if (n & 1) t = mul(t, x); return t; } inline ll inv (cl &x) { return bpow(x, mod - 2); } ll pw [N], INV, PW = 1, I = 1; ll a [N], p [N], n, m, H, cur, cnt; ll fen [N], fen2 [N]; vector <ll> ans; inline ll ask (ll l, ll r) { ll t = 0; for (; r; r -= r & -r) t = add(t, fen[r]); for (l--; l; l -= l & -l) t = sub(t, fen[l]); return mul(t, I); } inline ll Ask (ll i) { ll t = 0; for (; i; i -= i & -i) t += fen2[i]; return t; } inline void upd (ll i, ll x) { x = mul(x, PW); for (; i < N; i += i & -i) fen[i] = add(fen[i], x); } inline void Upd (ll i, cl &x) { for (; i < N; i += i & -i) fen2[i] += x; } inline void Ins (ll x) { cur = add(cur, ask(x + 1, N - 1)); upd(x, pw[cnt]); Upd(x, 1); cur = add(cur, mul(Ask(x), pw[cnt])); cnt++; } inline void Rmv (ll x) { cur = sub(cur, Ask(x)); Upd(x, -1); upd(x, sub(0, ask(x, x))); cur = mul(cur, INV); PW = mul(PW, base), I = mul(I, INV); cur = sub(cur, ask(x + 1, N - 1)); cnt--; } int main () { ios::sync_with_stdio(false); cin.tie(0); cout.tie(0); pw[0] = 1; for (ll i = 1; i < N; i++) pw[i] = mul(pw[i - 1], base); INV = inv(base); cin>> n >> m; for (ll i = 1, x; i <= n; i++) cin>> x, p[x] = i; for (ll i = 1; i <= n; i++) H = add(H, mul(p[i], pw[i - 1])); input(1, m, a); for (ll i = 1; i < n; i++) Ins(a[i]); for (ll i = n; i <= m; i++) { Ins(a[i]); if (cur == H) ans.push_back(i - n + 1); Rmv(a[i - n + 1]); } cout<< SZ(ans) << '\n'; output(0, SZ(ans), ans, 1); cerr<< "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n"; return 0; } /* 5 10 2 1 5 3 4 5 6 3 8 12 7 1 10 11 9 3 4 1 2 3 10 2 3 4 */
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