結果
問題 | No.880 Yet Another Segment Tree Problem |
ユーザー | kusaf_ |
提出日時 | 2024-02-24 00:36:54 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 6,243 bytes |
コンパイル時間 | 3,326 ms |
コンパイル使用メモリ | 258,052 KB |
実行使用メモリ | 19,456 KB |
最終ジャッジ日時 | 2024-09-29 09:35:47 |
合計ジャッジ時間 | 14,881 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 2 ms
5,248 KB |
testcase_01 | WA | - |
testcase_02 | WA | - |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | WA | - |
testcase_28 | WA | - |
testcase_29 | WA | - |
testcase_30 | WA | - |
testcase_31 | WA | - |
testcase_32 | WA | - |
testcase_33 | AC | 313 ms
19,200 KB |
testcase_34 | AC | 319 ms
19,276 KB |
testcase_35 | AC | 311 ms
19,076 KB |
testcase_36 | AC | 324 ms
19,200 KB |
testcase_37 | AC | 310 ms
19,256 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; template<class S, auto op, auto e, class F, auto mapping, auto composition, auto id> struct lazy_segtree { static_assert(std::is_convertible_v<decltype(op), std::function<S(S, S)>>, "op must work as S(S, S)"); static_assert(std::is_convertible_v<decltype(e), std::function<S()>>, "e must work as S()"); static_assert(std::is_convertible_v<decltype(mapping), std::function<S(F, S)>>, "mapping must work as F(F, S)"); static_assert(std::is_convertible_v<decltype(composition), std::function<F(F, F)>>, "compostiion must work as F(F, F)"); static_assert(std::is_convertible_v<decltype(id), std::function<F()>>, "id must work as F()"); public: lazy_segtree(): lazy_segtree(0) {} explicit lazy_segtree(int n): lazy_segtree(std::vector<S>(n, e())) {} explicit lazy_segtree(const std::vector<S>& v): _n(int(v.size())) { size = (int)bit_ceil((unsigned int)(_n)); log = countr_zero((unsigned int)size); d = std::vector<S>(2 * size, e()); lz = std::vector<F>(size, id()); for(int i = 0; i < _n; i++) { d[size + i] = v[i]; } for(int i = size - 1; i >= 1; i--) { update(i); } } void set(int p, S x) { assert(0 <= p && p < _n); p += size; for(int i = log; i >= 1; i--) { push(p >> i); } d[p] = x; for(int i = 1; i <= log; i++) { update(p >> i); } } S get(int p) { assert(0 <= p && p < _n); p += size; for(int i = log; i >= 1; i--) { push(p >> i); } return d[p]; } S prod(int l, int r) { assert(0 <= l && l <= r && r <= _n); if(l == r) { return e(); } l += size; r += size; for(int i = log; i >= 1; i--) { if(((l >> i) << i) != l) { push(l >> i); } if(((r >> i) << i) != r) { push((r - 1) >> i); } } S sml = e(), smr = e(); while(l < r) { if(l & 1) { sml = op(sml, d[l++]); } if(r & 1) { smr = op(d[--r], smr); } l >>= 1; r >>= 1; } return op(sml, smr); } S all_prod() { return d[1]; } void apply(int p, F f) { assert(0 <= p && p < _n); p += size; for(int i = log; i >= 1; i--) { push(p >> i); } d[p] = mapping(f, d[p]); for(int i = 1; i <= log; i++) { update(p >> i); } } void apply(int l, int r, F f) { assert(0 <= l && l <= r && r <= _n); if(l == r) return; l += size; r += size; for(int i = log; i >= 1; i--) { if(((l >> i) << i) != l) { push(l >> i); } if(((r >> i) << i) != r) { push((r - 1) >> i); } } { int l2 = l, r2 = r; while(l < r) { if(l & 1) { all_apply(l++, f); } if(r & 1) { all_apply(--r, f); } l >>= 1; r >>= 1; } l = l2; r = r2; } for(int i = 1; i <= log; i++) { if(((l >> i) << i) != l) { update(l >> i); } if(((r >> i) << i) != r) { update((r - 1) >> i); } } } template<bool (*g)(S)> int max_right(int l) { return max_right(l, [](S x) { return g(x); }); } template<class G> int max_right(int l, G g) { assert(0 <= l && l <= _n); assert(g(e())); if(l == _n) { return _n; } l += size; for(int i = log; i >= 1; i--) { push(l >> i); } S sm = e(); do { while(l % 2 == 0) l >>= 1; if(!g(op(sm, d[l]))) { while(l < size) { push(l); l = (2 * l); if(g(op(sm, d[l]))) { sm = op(sm, d[l]); l++; } } return l - size; } sm = op(sm, d[l]); l++; } while((l & -l) != l); return _n; } template<bool (*g)(S)> int min_left(int r) { return min_left(r, [](S x) { return g(x); }); } template<class G> int min_left(int r, G g) { assert(0 <= r && r <= _n); assert(g(e())); if(r == 0) { return 0; } r += size; for(int i = log; i >= 1; i--) { push((r - 1) >> i); } S sm = e(); do { r--; while(r > 1 && (r % 2)) r >>= 1; if(!g(op(d[r], sm))) { while(r < size) { push(r); r = (2 * r + 1); if(g(op(d[r], sm))) { sm = op(d[r], sm); r--; } } return r + 1 - size; } sm = op(d[r], sm); } while((r & -r) != r); return 0; } private: int _n, size, log; std::vector<S> d; std::vector<F> lz; void update(int k) { d[k] = op(d[2 * k], d[2 * k + 1]); } void all_apply(int k, F f) { d[k] = mapping(f, d[k]); if(k < size) { lz[k] = composition(f, lz[k]); if(d[k].fail) { push(k), update(k); } } } void push(int k) { all_apply(2 * k, lz[k]); all_apply(2 * k + 1, lz[k]); lz[k] = id(); } }; constexpr ll INF = 2e9; struct S { ll max, lcm, sz, sum; bool fail; S(): max(0), lcm(1), sz(0), sum(0), fail(false) {} S(ll x, ll sz = 1): max(x), lcm(x), sz(sz), sum(x * sz), fail(false) {} }; struct F { ll g, upd; F(): g(0), upd(0) {} F(ll g, ll upd): g(g), upd(upd) {} static F gcd(ll x) noexcept { return F(x, 0); } static F update(ll x) noexcept { return F(0, x); } }; S op(S l, S r) { if(!r.sz) { return l; } if(!l.sz) { return r; } S ret; ret.max = std::max(l.max, r.max); ret.sum = l.sum + r.sum; ret.lcm = min(INF, std::lcm(l.lcm, r.lcm)); ret.sz = l.sz + r.sz; return ret; } S e() { return S(); } S fx(F f, S x) { if(x.fail) { return x; } if(f.upd) { x = S(f.upd, x.sz); } if(f.g) { if(x.sz * x.max == x.sum) { x = S(gcd(x.max, f.g)); } else if(x.lcm == INF || f.g % x.lcm) { x.fail = true; } } return x; } F fg(F f, F g) { if(f.upd) { return F::update(f.upd); } else if(g.upd) { return F::update(gcd(f.g, g.upd)); } else { return F::gcd(gcd(f.g, g.g)); } } F id() { return F(); } int main() { ios::sync_with_stdio(false); cin.tie(0); ll N, Q; cin >> N >> Q; vector<S> A(N); for(ll i = 0; i < N; i++) { ll a; cin >> a; A[i] = S(a); } lazy_segtree<S, op, e, F, fx, fg, id> seg(A); while(Q--) { ll type, l, r, x; cin >> type >> l >> r; l--; if(type <= 2) { cin >> x; } if(type == 1) { seg.apply(l, r, F::update(x)); } if(type == 2) { seg.apply(l, r, F::gcd(x)); } if(type == 3) { cout << seg.prod(l, r).max << "\n"; } if(type == 4) { cout << seg.prod(l, r).sum << "\n"; } } }