結果
| 問題 |
No.911 ラッキーソート
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-10-19 13:23:38 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 50 ms / 2,000 ms |
| コード長 | 4,105 bytes |
| コンパイル時間 | 3,003 ms |
| コンパイル使用メモリ | 201,112 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-06-27 02:09:57 |
| 合計ジャッジ時間 | 5,867 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 46 |
ソースコード
#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;
template <class T> using treap = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
using Int = long long;
#define REP(i, n) for (long long i = 0, max_i = (n); i < max_i; i++)
#define REPI(i, a, b) for (long long i = (a), max_i = (b); i < max_i; i++)
#define ALL(obj) begin(obj), end(obj)
#define RALL(obj) rbegin(obj), rend(obj)
#define fi first
#define se second
using ii = pair<Int, Int>;
vector<ii> dirs = {
{1, 0}, {0, 1}, {-1, 0}, {0, -1}, // 4方向
{1, 1}, {-1, 1}, {-1, -1}, {1, -1}, // 斜め
{0, 0}, // 自身
};
Int get_msb(long long x) {
assert(x != 0);
return 63 - __builtin_clzll(x);
}
Int get_lsb(long long x) {
assert(x != 0);
return __builtin_ctzll(x);
}
template <class T> inline bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } return false; }
template <class T> inline bool chmin(T& a, const T& b) { if (a > b) { a = b; return true; } return false; }
template <class T, class S> vector<T> make_vec(size_t n, S x) { return vector<T>(n, x); }
template <class T, class... Ts> auto make_vec(size_t n, Ts... ts) { return vector<decltype(make_vec<T>(ts...))>(n, make_vec<T>(ts...)); }
// debug
template <class T> ostream& operator<<(ostream& s, const vector<T>& d) { REP (i, d.size()) s << d[i] << (i == d.size() - 1 ? "" : " "); return s; }
template <class T> ostream& operator<<(ostream& s, const vector<vector<T>>& d) { REP (i, d.size()) s << d[i] << (i == d.size() - 1 ? "" : "\n"); return s; }
template <class T, class S> ostream& operator<<(ostream& s, const pair<T, S>& p) { s << "{" << p.first << ", " << p.second << "}"; return s; }
template <class T> ostream& operator<<(ostream& s, const set<T> m) { for (auto it = m.begin(); it != m.end(); it++) { s << *it << (next(it) == m.end() ? "" : "\n"); } return s; }
template <class T> ostream& operator<<(ostream& s, const multiset<T> m) { for (auto it = m.begin(); it != m.end(); it++) { s << *it << (next(it) == m.end() ? "" : "\n"); } return s; }
template <class T, class S> ostream& operator<<(ostream& s, const map<T, S> m) { for (auto it = m.begin(); it != m.end(); it++) { s << *it << (next(it) == m.end() ? "" : "\n"); } return s; }
template <class T, class S> ostream& operator<<(ostream& s, const unordered_map<T, S> m) { for (auto it = m.begin(); it != m.end(); it++) { s << *it << (next(it) == m.end() ? "" : "\n"); } return s; }
#ifdef _MY_DEBUG
#define dump(...) cerr << "/* " << #__VA_ARGS__ << " :[" << __LINE__ << ":" << __FUNCTION__ << "]" << endl, dump_func(__VA_ARGS__), cerr << "*/\n\n";
#else
#define dump(...)
#define endl "\n"
#endif
void dump_func() { cerr << endl; }
template <class Head, class... Tail> void dump_func(Head&& h, Tail&&... t) { cerr << h << (sizeof...(Tail) == 0 ? "" : ", "), dump_func(forward<Tail>(t)...); }
struct Fast { Fast() { cin.tie(nullptr); ios::sync_with_stdio(false); } } fast;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
constexpr Int MOD = 1000000007;
// *************** TEMPLATE END ***************
constexpr Int K = 62;
signed main() {
Int n, L, R; cin >> n >> L >> R;
vector<Int> a(n); REP (i, n) cin >> a[i];
auto can = make_vec<bool>(K, 2, true);
REP (i, n - 1) {
for (Int k = K - 1; k >= 0; k--) {
Int s = a[i] >> k & 1, t = a[i + 1] >> k & 1;
if (s != t) {
can[k][!s] = false;
break;
}
}
}
auto calc = [&](Int lim) -> Int {
auto dp = make_vec<Int>(K + 1, 2, 0);
dp[K][0] = 1;
for (Int k = K - 1; k >= 0; k--) {
Int lim_bit = lim >> k & 1;
REP (x, 2) {
REP (d, (x ? 1 : lim_bit) + 1) {
dp[k][x || d < lim_bit] += dp[k + 1][x] * can[k][d];
}
}
}
return accumulate(ALL(dp[0]), 0LL);
};
Int ans = calc(R);
if (L) ans -= calc(L - 1);
cout << ans << endl;
}