結果
問題 | No.1557 Binary Variable |
ユーザー | rniya |
提出日時 | 2021-06-25 22:23:11 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 5,444 bytes |
コンパイル時間 | 2,152 ms |
コンパイル使用メモリ | 205,516 KB |
実行使用メモリ | 814,260 KB |
最終ジャッジ日時 | 2024-06-25 08:32:14 |
合計ジャッジ時間 | 9,289 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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 | RE | - |
testcase_01 | RE | - |
testcase_02 | RE | - |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 38 ms
6,944 KB |
testcase_05 | AC | 37 ms
6,940 KB |
testcase_06 | AC | 36 ms
6,940 KB |
testcase_07 | AC | 36 ms
6,944 KB |
testcase_08 | AC | 42 ms
6,944 KB |
testcase_09 | AC | 43 ms
6,944 KB |
testcase_10 | AC | 58 ms
6,944 KB |
testcase_11 | AC | 57 ms
6,940 KB |
testcase_12 | AC | 42 ms
6,940 KB |
testcase_13 | AC | 58 ms
6,940 KB |
testcase_14 | AC | 116 ms
34,500 KB |
testcase_15 | AC | 60 ms
6,940 KB |
testcase_16 | AC | 105 ms
26,488 KB |
testcase_17 | AC | 93 ms
16,400 KB |
testcase_18 | AC | 88 ms
12,832 KB |
testcase_19 | AC | 267 ms
244,104 KB |
testcase_20 | AC | 172 ms
115,684 KB |
testcase_21 | AC | 167 ms
106,656 KB |
testcase_22 | AC | 212 ms
183,820 KB |
testcase_23 | AC | 162 ms
100,928 KB |
testcase_24 | AC | 454 ms
427,096 KB |
testcase_25 | AC | 380 ms
363,060 KB |
testcase_26 | MLE | - |
testcase_27 | MLE | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
ソースコード
#define LOCAL #include <bits/stdc++.h> using namespace std; #pragma region Macros typedef long long ll; typedef __int128_t i128; typedef unsigned int uint; typedef unsigned long long ull; #define ALL(x) (x).begin(), (x).end() template <typename T> istream& operator>>(istream& is, vector<T>& v) { for (T& x : v) is >> x; return is; } template <typename T> ostream& operator<<(ostream& os, const vector<T>& v) { for (int i = 0; i < (int)v.size(); i++) { os << v[i] << (i + 1 == (int)v.size() ? "" : " "); } return os; } template <typename T, typename U> ostream& operator<<(ostream& os, const pair<T, U>& p) { os << '(' << p.first << ',' << p.second << ')'; return os; } template <typename T, typename U, typename V> ostream& operator<<(ostream& os, const tuple<T, U, V>& t) { os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ')'; return os; } template <typename T, typename U, typename V, typename W> ostream& operator<<(ostream& os, const tuple<T, U, V, W>& t) { os << '(' << get<0>(t) << ',' << get<1>(t) << ',' << get<2>(t) << ',' << get<3>(t) << ')'; return os; } template <typename T, typename U> ostream& operator<<(ostream& os, const map<T, U>& m) { os << '{'; for (auto itr = m.begin(); itr != m.end();) { os << '(' << itr->first << ',' << itr->second << ')'; if (++itr != m.end()) os << ','; } os << '}'; return os; } template <typename T, typename U> ostream& operator<<(ostream& os, const unordered_map<T, U>& m) { os << '{'; for (auto itr = m.begin(); itr != m.end();) { os << '(' << itr->first << ',' << itr->second << ')'; if (++itr != m.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const set<T>& s) { os << '{'; for (auto itr = s.begin(); itr != s.end();) { os << *itr; if (++itr != s.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const multiset<T>& s) { os << '{'; for (auto itr = s.begin(); itr != s.end();) { os << *itr; if (++itr != s.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const unordered_set<T>& s) { os << '{'; for (auto itr = s.begin(); itr != s.end();) { os << *itr; if (++itr != s.end()) os << ','; } os << '}'; return os; } template <typename T> ostream& operator<<(ostream& os, const deque<T>& v) { for (int i = 0; i < (int)v.size(); i++) { os << v[i] << (i + 1 == (int)v.size() ? "" : " "); } return os; } void debug_out() { cerr << '\n'; } template <class Head, class... Tail> void debug_out(Head&& head, Tail&&... tail) { cerr << head; if (sizeof...(Tail) > 0) cerr << ", "; debug_out(move(tail)...); } #ifdef LOCAL #define debug(...) \ cerr << " "; \ cerr << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << '\n'; \ cerr << " "; \ debug_out(__VA_ARGS__) #else #define debug(...) 42 #endif template <typename T> T gcd(T x, T y) { return y != 0 ? gcd(y, x % y) : x; } template <typename T> T lcm(T x, T y) { return x / gcd(x, y) * y; } template <class T1, class T2> inline bool chmin(T1& a, T2 b) { if (a > b) { a = b; return true; } return false; } template <class T1, class T2> inline bool chmax(T1& a, T2 b) { if (a < b) { a = b; return true; } return false; } #pragma endregion /** * @brief Binary Indexed Tree * @docs docs/datastructure/BinaryIndexedTree.md */ template <typename T> class BinaryIndexedTree { T sum(int i) { T res = T(); for (; i > 0; i -= (i & -i)) res += dat[i]; return res; } public: int n; vector<T> dat; BinaryIndexedTree(int n_) : n(n_ + 1), dat(n + 1, 0) {} void add(int i, const T& x) { for (++i; i <= n; i += (i & -i)) dat[i] += x; } T query(int l, int r) { return sum(r) - sum(l); } int lower_bound(T x) const { if (x <= 0) return 0; int pos = 0, k = 1; while (k < n) k <<= 1; for (; k > 0; k >>= 1) { if (pos + k <= n && dat[pos + k] < x) { x -= dat[pos + k]; pos += k; } } return pos; } int upper_bound(T x) const { return lower_bound(x + 1); } T operator[](int i) { return query(i, i + 1); } }; const int INF = 1e9; const long long IINF = 1e18; const int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1}; const char dir[4] = {'D', 'R', 'U', 'L'}; const long long MOD = 1000000007; // const long long MOD = 998244353; int main() { cin.tie(0); ios::sync_with_stdio(false); int N, M; cin >> N >> M; vector<vector<int>> check(N); for (int i = 0; i < M; i++) { int L, R; cin >> L >> R; check[--R].emplace_back(--L); } BinaryIndexedTree<int> BIT(N); for (int r = 0; r < N; r++) { for (int& l : check[r]) { if (BIT.query(l, r + 1) == 0) { BIT.add(r, 1); } } } int ans = N - BIT.query(0, N); cout << ans << '\n'; return 0; }