結果
問題 | No.674 n連勤 |
ユーザー |
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提出日時 | 2022-09-04 13:07:14 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 115 ms / 2,000 ms |
コード長 | 2,837 bytes |
コンパイル時間 | 1,031 ms |
コンパイル使用メモリ | 84,432 KB |
最終ジャッジ日時 | 2025-02-07 02:34:21 |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 17 |
コンパイルメッセージ
main.cpp:23:41: warning: use of ‘auto’ in parameter declaration only available with ‘-std=c++20’ or ‘-fconcepts’ 23 | auto remove(SizeType l, SizeType r, auto& it) { | ^~~~
ソースコード
#include <iostream>#include <iostream>#include <map>#include <stdexcept>#include <deque>template<class ValType = long long, class SizeType = long long>class SegmentMap {const SizeType n;std::map<SizeType, ValType> mp;auto add(SizeType i, ValType val, bool left = true, bool right = true) {auto it = std::prev(mp.upper_bound(i));if(right && std::next(it)->second == val) { mp.erase(std::next(it)); }if(left && it->second == val) { return; }mp.emplace(i, val);}auto remove(SizeType l, SizeType r, auto& it) {auto nx = std::next(it)->first;auto val = it->second;auto ret = std::next(it);if(l <= it->first) { ret = mp.erase(it); }if(r < nx - 1) { add(r + 1, val, false, true); }return ret;}auto remove(SizeType l, SizeType r) {auto it = std::prev(mp.upper_bound(l));while(it->first <= r) {it = remove(l, r, it);}}public:SegmentMap(SizeType n) :n(n) {mp.emplace(-1, -1);mp.emplace(0, -2);mp.emplace(n, -1);}auto output() const {for(auto it = std::next(mp.begin()); it != std::prev(mp.end()); ++it) {std::cout << "[" << it->first << ", " <<std::next(it)->first - 1 << "] :" <<it->second << std::endl;}}auto update(SizeType l, SizeType r, ValType val) {if(l < 0 || r >= n) { throw std::runtime_error(""); }if(l > r) { throw std::runtime_error(""); }remove(l, r);add(l, val);}auto query(SizeType l, SizeType r) {if(l < 0 || r >= n) { throw std::runtime_error(""); }if(l > r) { throw std::runtime_error(""); }auto it = std::prev(mp.upper_bound(l));std::deque<std::pair<ValType, std::pair<SizeType, SizeType>>> dq;while(it->first <= r) {auto nx = std::next(it)->first;auto nr = std::min(nx - 1, r);auto nl = std::max(l, it->first);dq.emplace_back(it->second, std::pair{nl,nr});++it;}return dq;}auto get(SizeType i) {auto it = std::prev(mp.upper_bound(i));auto nx = std::next(it)->first;auto nr = nx - 1;auto nl = it->first;return std::pair{it->second,std::pair{nl,nr}};}};using ll = long long;using std::cout;using std::cin;constexpr char endl = '\n';signed main() {ll d, q;cin >> d >> q;auto segmap = SegmentMap(d);ll ans = 0;for(int _ = 0; _ < q; ++_) {ll a, b;cin >> a >> b;segmap.update(a, b, 1);auto [__, range] = segmap.get(a);ans = std::max(ans, range.second - range.first + 1);cout << ans << endl;}}