Submission #433103

#TimeUsernameProblemLanguageResultExecution timeMemory
433103Return_0Matching (CEOI11_mat)C++17
63 / 100
518 ms65540 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,tune=native") #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 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 + 17, base = 1e6 + 11; ll pw [N], H, cur; struct fenwick { ll fen [N]; inline void inc (ll i) { for (; i < N; i += i & -i) ++fen[i]; } inline void dec (ll i) { for (; i < N; i += i & -i) --fen[i]; } inline ll ask (ll i) { ll t = 0; for (; i; i -= i & -i) t += fen[i]; return t; } } fen; struct segtree { ll l, r, lz; ll sum; segtree *lt, *rt; inline segtree (cl &L = 1, cl &R = N - 2) : l(L), r(R), lz(0), sum(0) {} void build () { if (l == r) return; lt = new segtree (l, mid); rt = new segtree (mid + 1, r); lt->build(); rt->build(); } inline void push (cl &x) { sum = sum * pw[x]; lz += x; } inline void shift () { if (lz) { lt->push(lz); rt->push(lz); lz = 0; } } void modify (cl &pos, cl &x) { if (l == r) { sum = x; return; } shift(); if (pos <= lt->r) lt->modify(pos, x); else rt->modify(pos, x); sum = lt->sum + rt->sum; } ll ask (cl &ql, cl &qr) { if (r < ql || qr < l) return 0; if (ql <= l && r <= qr) return sum; shift(); return lt->ask(ql, qr) + rt->ask(ql, qr); } } seg; ll p [N], a [N], n, m; vector <ll> cmprs, ans; 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] = pw[i - 1] * 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 = H * base + p[i]; for (ll i = 1; i <= m; i++) cin>> a[i], cmprs.push_back(a[i]); sort(All(cmprs)); seg.r = m; seg.build(); for (ll i = 1; i <= m; i++) { a[i] = upper_bound(All(cmprs), a[i]) - cmprs.begin(); if (i > n) { cur = cur - (pw[n - 1] * fen.ask(a[i - n])); cur = cur - seg.ask(a[i - n] + 1, m); fen.dec(a[i - n]); seg.modify(a[i - n], 0); } seg.push(1); fen.inc(a[i]); seg.modify(a[i], 1); cur = ((cur * base) + fen.ask(a[i])) + seg.ask(a[i] + 1, m); if (i >= n && cur == H) ans.push_back(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 */
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