結果
問題 | No.2667 Constrained Permutation |
ユーザー | maspy |
提出日時 | 2024-03-08 21:46:12 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 1,283 ms / 2,000 ms |
コード長 | 14,481 bytes |
コンパイル時間 | 5,449 ms |
コンパイル使用メモリ | 310,812 KB |
実行使用メモリ | 18,712 KB |
最終ジャッジ日時 | 2024-09-29 19:26:44 |
合計ジャッジ時間 | 15,959 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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ファイルパターン | 結果 |
---|---|
other | AC * 46 |
ソースコード
#line 1 "/home/maspy/compro/library/my_template.hpp"#if defined(LOCAL)#include <my_template_compiled.hpp>#else// https://codeforces.com/blog/entry/96344#pragma GCC optimize("Ofast,unroll-loops")#pragma GCC target("avx2,popcnt")#include <bits/stdc++.h>using namespace std;using ll = long long;using u32 = unsigned int;using u64 = unsigned long long;using i128 = __int128;using u128 = unsigned __int128;using f128 = __float128;template <class T>constexpr T infty = 0;template <>constexpr int infty<int> = 1'000'000'000;template <>constexpr ll infty<ll> = ll(infty<int>) * infty<int> * 2;template <>constexpr u32 infty<u32> = infty<int>;template <>constexpr u64 infty<u64> = infty<ll>;template <>constexpr i128 infty<i128> = i128(infty<ll>) * infty<ll>;template <>constexpr double infty<double> = infty<ll>;template <>constexpr long double infty<long double> = infty<ll>;using pi = pair<ll, ll>;using vi = vector<ll>;template <class T>using vc = vector<T>;template <class T>using vvc = vector<vc<T>>;template <class T>using vvvc = vector<vvc<T>>;template <class T>using vvvvc = vector<vvvc<T>>;template <class T>using vvvvvc = vector<vvvvc<T>>;template <class T>using pq = priority_queue<T>;template <class T>using pqg = priority_queue<T, vector<T>, greater<T>>;#define vv(type, name, h, ...) \vector<vector<type>> name(h, vector<type>(__VA_ARGS__))#define vvv(type, name, h, w, ...) \vector<vector<vector<type>>> name( \h, vector<vector<type>>(w, vector<type>(__VA_ARGS__)))#define vvvv(type, name, a, b, c, ...) \vector<vector<vector<vector<type>>>> name( \a, vector<vector<vector<type>>>( \b, vector<vector<type>>(c, vector<type>(__VA_ARGS__))))// https://trap.jp/post/1224/#define FOR1(a) for (ll _ = 0; _ < ll(a); ++_)#define FOR2(i, a) for (ll i = 0; i < ll(a); ++i)#define FOR3(i, a, b) for (ll i = a; i < ll(b); ++i)#define FOR4(i, a, b, c) for (ll i = a; i < ll(b); i += (c))#define FOR1_R(a) for (ll i = (a)-1; i >= ll(0); --i)#define FOR2_R(i, a) for (ll i = (a)-1; i >= ll(0); --i)#define FOR3_R(i, a, b) for (ll i = (b)-1; i >= ll(a); --i)#define overload4(a, b, c, d, e, ...) e#define overload3(a, b, c, d, ...) d#define FOR(...) overload4(__VA_ARGS__, FOR4, FOR3, FOR2, FOR1)(__VA_ARGS__)#define FOR_R(...) overload3(__VA_ARGS__, FOR3_R, FOR2_R, FOR1_R)(__VA_ARGS__)#define FOR_subset(t, s) \for (ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s)))#define all(x) x.begin(), x.end()#define len(x) ll(x.size())#define elif else if#define eb emplace_back#define mp make_pair#define mt make_tuple#define fi first#define se second#define stoi stollint popcnt(int x) { return __builtin_popcount(x); }int popcnt(u32 x) { return __builtin_popcount(x); }int popcnt(ll x) { return __builtin_popcountll(x); }int popcnt(u64 x) { return __builtin_popcountll(x); }int popcnt_mod_2(int x) { return __builtin_parity(x); }int popcnt_mod_2(u32 x) { return __builtin_parity(x); }int popcnt_mod_2(ll x) { return __builtin_parityll(x); }int popcnt_mod_2(u64 x) { return __builtin_parityll(x); }// (0, 1, 2, 3, 4) -> (-1, 0, 1, 1, 2)int topbit(int x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }int topbit(u32 x) { return (x == 0 ? -1 : 31 - __builtin_clz(x)); }int topbit(ll x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }int topbit(u64 x) { return (x == 0 ? -1 : 63 - __builtin_clzll(x)); }// (0, 1, 2, 3, 4) -> (-1, 0, 1, 0, 2)int lowbit(int x) { return (x == 0 ? -1 : __builtin_ctz(x)); }int lowbit(u32 x) { return (x == 0 ? -1 : __builtin_ctz(x)); }int lowbit(ll x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }int lowbit(u64 x) { return (x == 0 ? -1 : __builtin_ctzll(x)); }template <typename T>T floor(T a, T b) {return a / b - (a % b && (a ^ b) < 0);}template <typename T>T ceil(T x, T y) {return floor(x + y - 1, y);}template <typename T>T bmod(T x, T y) {return x - y * floor(x, y);}template <typename T>pair<T, T> divmod(T x, T y) {T q = floor(x, y);return {q, x - q * y};}template <typename T, typename U>T SUM(const vector<U> &A) {T sm = 0;for (auto &&a: A) sm += a;return sm;}#define MIN(v) *min_element(all(v))#define MAX(v) *max_element(all(v))#define LB(c, x) distance((c).begin(), lower_bound(all(c), (x)))#define UB(c, x) distance((c).begin(), upper_bound(all(c), (x)))#define UNIQUE(x) \sort(all(x)), x.erase(unique(all(x)), x.end()), x.shrink_to_fit()template <typename T>T POP(deque<T> &que) {T a = que.front();que.pop_front();return a;}template <typename T>T POP(pq<T> &que) {T a = que.top();que.pop();return a;}template <typename T>T POP(pqg<T> &que) {T a = que.top();que.pop();return a;}template <typename T>T POP(vc<T> &que) {T a = que.back();que.pop_back();return a;}template <typename F>ll binary_search(F check, ll ok, ll ng, bool check_ok = true) {if (check_ok) assert(check(ok));while (abs(ok - ng) > 1) {auto x = (ng + ok) / 2;(check(x) ? ok : ng) = x;}return ok;}template <typename F>double binary_search_real(F check, double ok, double ng, int iter = 100) {FOR(iter) {double x = (ok + ng) / 2;(check(x) ? ok : ng) = x;}return (ok + ng) / 2;}template <class T, class S>inline bool chmax(T &a, const S &b) {return (a < b ? a = b, 1 : 0);}template <class T, class S>inline bool chmin(T &a, const S &b) {return (a > b ? a = b, 1 : 0);}// ? は -1vc<int> s_to_vi(const string &S, char first_char) {vc<int> A(S.size());FOR(i, S.size()) { A[i] = (S[i] != '?' ? S[i] - first_char : -1); }return A;}template <typename T, typename U>vector<T> cumsum(vector<U> &A, int off = 1) {int N = A.size();vector<T> B(N + 1);FOR(i, N) { B[i + 1] = B[i] + A[i]; }if (off == 0) B.erase(B.begin());return B;}// stable sorttemplate <typename T>vector<int> argsort(const vector<T> &A) {vector<int> ids(len(A));iota(all(ids), 0);sort(all(ids),[&](int i, int j) { return (A[i] == A[j] ? i < j : A[i] < A[j]); });return ids;}// A[I[0]], A[I[1]], ...template <typename T>vc<T> rearrange(const vc<T> &A, const vc<int> &I) {vc<T> B(len(I));FOR(i, len(I)) B[i] = A[I[i]];return B;}#endif#line 1 "/home/maspy/compro/library/other/io.hpp"#define FASTIO#include <unistd.h>// https://judge.yosupo.jp/submission/21623namespace fastio {static constexpr uint32_t SZ = 1 << 17;char ibuf[SZ];char obuf[SZ];char out[100];// pointer of ibuf, obufuint32_t pil = 0, pir = 0, por = 0;struct Pre {char num[10000][4];constexpr Pre() : num() {for (int i = 0; i < 10000; i++) {int n = i;for (int j = 3; j >= 0; j--) {num[i][j] = n % 10 | '0';n /= 10;}}}} constexpr pre;inline void load() {memcpy(ibuf, ibuf + pil, pir - pil);pir = pir - pil + fread(ibuf + pir - pil, 1, SZ - pir + pil, stdin);pil = 0;if (pir < SZ) ibuf[pir++] = '\n';}inline void flush() {fwrite(obuf, 1, por, stdout);por = 0;}void rd(char &c) {do {if (pil + 1 > pir) load();c = ibuf[pil++];} while (isspace(c));}void rd(string &x) {x.clear();char c;do {if (pil + 1 > pir) load();c = ibuf[pil++];} while (isspace(c));do {x += c;if (pil == pir) load();c = ibuf[pil++];} while (!isspace(c));}template <typename T>void rd_real(T &x) {string s;rd(s);x = stod(s);}template <typename T>void rd_integer(T &x) {if (pil + 100 > pir) load();char c;doc = ibuf[pil++];while (c < '-');bool minus = 0;if constexpr (is_signed<T>::value || is_same_v<T, i128>) {if (c == '-') { minus = 1, c = ibuf[pil++]; }}x = 0;while ('0' <= c) { x = x * 10 + (c & 15), c = ibuf[pil++]; }if constexpr (is_signed<T>::value || is_same_v<T, i128>) {if (minus) x = -x;}}void rd(int &x) { rd_integer(x); }void rd(ll &x) { rd_integer(x); }void rd(i128 &x) { rd_integer(x); }void rd(u32 &x) { rd_integer(x); }void rd(u64 &x) { rd_integer(x); }void rd(u128 &x) { rd_integer(x); }void rd(double &x) { rd_real(x); }void rd(long double &x) { rd_real(x); }void rd(f128 &x) { rd_real(x); }template <class T, class U>void rd(pair<T, U> &p) {return rd(p.first), rd(p.second);}template <size_t N = 0, typename T>void rd_tuple(T &t) {if constexpr (N < std::tuple_size<T>::value) {auto &x = std::get<N>(t);rd(x);rd_tuple<N + 1>(t);}}template <class... T>void rd(tuple<T...> &tpl) {rd_tuple(tpl);}template <size_t N = 0, typename T>void rd(array<T, N> &x) {for (auto &d: x) rd(d);}template <class T>void rd(vc<T> &x) {for (auto &d: x) rd(d);}void read() {}template <class H, class... T>void read(H &h, T &... t) {rd(h), read(t...);}void wt(const char c) {if (por == SZ) flush();obuf[por++] = c;}void wt(const string s) {for (char c: s) wt(c);}void wt(const char *s) {size_t len = strlen(s);for (size_t i = 0; i < len; i++) wt(s[i]);}template <typename T>void wt_integer(T x) {if (por > SZ - 100) flush();if (x < 0) { obuf[por++] = '-', x = -x; }int outi;for (outi = 96; x >= 10000; outi -= 4) {memcpy(out + outi, pre.num[x % 10000], 4);x /= 10000;}if (x >= 1000) {memcpy(obuf + por, pre.num[x], 4);por += 4;} else if (x >= 100) {memcpy(obuf + por, pre.num[x] + 1, 3);por += 3;} else if (x >= 10) {int q = (x * 103) >> 10;obuf[por] = q | '0';obuf[por + 1] = (x - q * 10) | '0';por += 2;} elseobuf[por++] = x | '0';memcpy(obuf + por, out + outi + 4, 96 - outi);por += 96 - outi;}template <typename T>void wt_real(T x) {ostringstream oss;oss << fixed << setprecision(15) << double(x);string s = oss.str();wt(s);}void wt(int x) { wt_integer(x); }void wt(ll x) { wt_integer(x); }void wt(i128 x) { wt_integer(x); }void wt(u32 x) { wt_integer(x); }void wt(u64 x) { wt_integer(x); }void wt(u128 x) { wt_integer(x); }void wt(double x) { wt_real(x); }void wt(long double x) { wt_real(x); }void wt(f128 x) { wt_real(x); }template <class T, class U>void wt(const pair<T, U> val) {wt(val.first);wt(' ');wt(val.second);}template <size_t N = 0, typename T>void wt_tuple(const T t) {if constexpr (N < std::tuple_size<T>::value) {if constexpr (N > 0) { wt(' '); }const auto x = std::get<N>(t);wt(x);wt_tuple<N + 1>(t);}}template <class... T>void wt(tuple<T...> tpl) {wt_tuple(tpl);}template <class T, size_t S>void wt(const array<T, S> val) {auto n = val.size();for (size_t i = 0; i < n; i++) {if (i) wt(' ');wt(val[i]);}}template <class T>void wt(const vector<T> val) {auto n = val.size();for (size_t i = 0; i < n; i++) {if (i) wt(' ');wt(val[i]);}}void print() { wt('\n'); }template <class Head, class... Tail>void print(Head &&head, Tail &&... tail) {wt(head);if (sizeof...(Tail)) wt(' ');print(forward<Tail>(tail)...);}// gcc expansion. called automaticall after main.void __attribute__((destructor)) _d() { flush(); }} // namespace fastiousing fastio::read;using fastio::print;using fastio::flush;#define INT(...) \int __VA_ARGS__; \read(__VA_ARGS__)#define LL(...) \ll __VA_ARGS__; \read(__VA_ARGS__)#define U32(...) \u32 __VA_ARGS__; \read(__VA_ARGS__)#define U64(...) \u64 __VA_ARGS__; \read(__VA_ARGS__)#define STR(...) \string __VA_ARGS__; \read(__VA_ARGS__)#define CHAR(...) \char __VA_ARGS__; \read(__VA_ARGS__)#define DBL(...) \double __VA_ARGS__; \read(__VA_ARGS__)#define VEC(type, name, size) \vector<type> name(size); \read(name)#define VV(type, name, h, w) \vector<vector<type>> name(h, vector<type>(w)); \read(name)void YES(bool t = 1) { print(t ? "YES" : "NO"); }void NO(bool t = 1) { YES(!t); }void Yes(bool t = 1) { print(t ? "Yes" : "No"); }void No(bool t = 1) { Yes(!t); }void yes(bool t = 1) { print(t ? "yes" : "no"); }void no(bool t = 1) { yes(!t); }#line 2 "/home/maspy/compro/library/random/base.hpp"u64 RNG_64() {static uint64_t x_= uint64_t(chrono::duration_cast<chrono::nanoseconds>(chrono::high_resolution_clock::now().time_since_epoch()).count())* 10150724397891781847ULL;x_ ^= x_ << 7;return x_ ^= x_ >> 9;}u64 RNG(u64 lim) { return RNG_64() % lim; }ll RNG(ll l, ll r) { return l + RNG_64() % (r - l); }#line 4 "main.cpp"/*Hall で条件を列挙することを考えると、求めたいものが区間であることが分かるなるべく小さいやつと大きいやつを求めたいとりあえずひとつ作って、なるべく増やしたり減らしたりする*/bool check(vi L, vi R, ll K) {ll N = len(L);FOR(i, N) L[i] -= K;FOR(i, N) R[i] -= K;pqg<ll> que;FOR(x, 1, N + 1) {while (len(L) && L.back() <= x) POP(L), que.push(POP(R));if (que.empty()) return 0;if (POP(que) < x) return 0;}return 1;}void solve() {LL(N);vi L(N), R(N);FOR(i, N) read(L[i], R[i]);auto I = argsort(L);reverse(all(I));L = rearrange(L, I);R = rearrange(R, I);vi L0 = L, R0 = R;ll K0 = [&]() -> ll {L = L0, R = R0;vi A;ll p = -1;pqg<ll> que;while (1) {while (len(L) && L.back() <= p) { POP(L), que.push(POP(R)); }if (!que.empty()) {ll r = POP(que);if (r < p) return -1;A.eb(p++);continue;}if (L.empty()) break;p = L.back();}ll K = A.back() - N;return (check(L0, R0, K) ? K : -1);}();if (K0 == -1) {// FOR(K, 1, 10) assert(!check(L0, R0, K));print(0);return;}ll INF = infty<int>;INF *= 2;ll a = binary_search([&](ll n) -> bool { return check(L0, R0, K0 - n); }, 0,INF);ll b = binary_search([&](ll n) -> bool { return check(L0, R0, K0 + n); }, 0,INF);print(a + b + 1);}void test() {ll N = RNG(2, 6);vi L(N), R(N);FOR(i, N) {L[i] = RNG(1, 10);R[i] = RNG(1, 10);if (L[i] > R[i]) swap(L[i], R[i]);}vi OK(15);FOR(i, 15) OK[i] = check(L, R, i);FOR(k, 15) FOR(j, k) FOR(i, j) {if (OK[i] && OK[k]) assert(OK[j]);}}signed main() {// FOR(100) test();// return 0;int T = 1;// INT(T);FOR(T) solve();return 0;}