Submission #947510

#	Time	Username	Problem	Language	Result	Execution time	Memory
947510		marvinthang	Shopping (JOI21_shopping)	C++17	90 / 100	103 ms	16616 KiB

Anna

/*************************************
*    author: marvinthang             *
*    created: 16.03.2024 15:47:41    *
*************************************/

#include "Anna.h"
#include <bits/stdc++.h>

using namespace std;

#define                  fi  first
#define                  se  second
#define                left  ___left
#define               right  ___right
#define                TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define             MASK(i)  (1LL << (i))
#define           BIT(x, i)  ((x) >> (i) & 1)
#define  __builtin_popcount  __builtin_popcountll
#define              ALL(v)  (v).begin(), (v).end()
#define           REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define          REPD(i, n)  for (int i = (n); i-- > 0; )
#define        FOR(i, a, b)  for (int i = (a), _b = (b); i < _b; ++i) 
#define       FORD(i, b, a)  for (int i = (b), _a = (a); --i >= _a; ) 
#define       FORE(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define      FORDE(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i) 
#define        scan_op(...)  istream & operator >> (istream &in, __VA_ARGS__ &u)
#define       print_op(...)  ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
    #include "debug.h"
#else
    #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
    #define DB(...) 23
    #define db(...) 23
    #define debug(...) 23
#endif

template <class U, class V> scan_op(pair <U, V>)  { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>)  { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>)  { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")";  else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }

// end of template

namespace {
	int N, L, R, cnt_r, cnt_s;
	int l, r, pl, pr, px, py, pm, p;
	bool phase;
	vector <int> num_pop;
}

void InitA(int n, int _l, int _r) {
	N = n; L = _l; R = _r + 1;
	cnt_r = 0;
	if (R - L > 1) {
		l = 0;
		r = N;
		int i = 1, d = 0;
		while (d < 14) {
			int m = l + r >> 1;
			if (R <= m) r = m, i <<= 1;
			else if (L >= m) l = m, i = i << 1 | 1;
			else break;
			++d;
		}
		REPD(j, 4) SendA(BIT(d, j));
		REPD(j, d) SendA(BIT(i, j));
		cnt_s = 4 + d;
		pl = l; 
		pr = r; 
		px = l + r >> 1; 
		py = px + 1;
		pm = 0;
		r = r - l - 2;
		l = 1;
		p = 0;
		phase = false;
		num_pop.assign(1, 0);
	}
}

void ReceiveA(bool x) {
	++cnt_r;
	if (!phase) {
		int sz = __lg(px - pl) + 1;
		pm = pm << 1 | x;
		if (cnt_r == sz) {
			pm += pl;
			int m = l + r >> 1;
			int qm = pm + m + 1;
			if (pm <= L && R <= qm) {
				SendA(1);
				r = m - 1;
				pl = pm; pr = qm;
			} else {
				SendA(0);
				l = m + 1;
				px = pm; py = qm;
			}
			cnt_r = 0;
			pm = 0;
			if (l > r || ++cnt_s == 18) {
				phase = true;
				cnt_r = 0;
			}
		}
	} else {
		if (px != py) {
			int sz = __lg(py - px) + 1;
			if (cnt_r <= sz) {
				p = p << 1 | x;
				return;
			}
		}
		if (!x) ++num_pop.back();
		else num_pop.push_back(0);
	}
}

int Answer() {
	if (R - L == 1) return L;
	vector <int> lst;
	FOR(i, pl, px) lst.push_back(i);
	if (px != py) {
		p += px;
		lst.push_back(p);
	}
	FOR(i, py, pr) lst.push_back(i);
	vector <int> st;
	REP(i, lst.size()) if (lst[i] < R) {
		while (num_pop[i]--) st.pop_back();
		st.push_back(lst[i]);
	}
	for (int x: st) if (x >= L) return x;
	return -1;
}

Bruno

/*************************************
*    author: marvinthang             *
*    created: 16.03.2024 15:48:57    *
*************************************/

#include "Bruno.h"
#include <bits/stdc++.h>

using namespace std;

#define                  fi  first
#define                  se  second
#define                left  ___left
#define               right  ___right
#define                TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define             MASK(i)  (1LL << (i))
#define           BIT(x, i)  ((x) >> (i) & 1)
#define  __builtin_popcount  __builtin_popcountll
#define              ALL(v)  (v).begin(), (v).end()
#define           REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define          REPD(i, n)  for (int i = (n); i-- > 0; )
#define        FOR(i, a, b)  for (int i = (a), _b = (b); i < _b; ++i) 
#define       FORD(i, b, a)  for (int i = (b), _a = (a); --i >= _a; ) 
#define       FORE(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define      FORDE(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i) 
#define        scan_op(...)  istream & operator >> (istream &in, __VA_ARGS__ &u)
#define       print_op(...)  ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
    #include "debug.h"
#else
    #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
    #define DB(...) 23
    #define db(...) 23
    #define debug(...) 23
#endif

template <class U, class V> scan_op(pair <U, V>)  { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>)  { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>)  { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")";  else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }

// end of template
namespace {
	int N;
	vector <int> P;
	int d, cnt_r, l, r, tl, tr;
	vector <int> pos;
}

void InitB(int n, vector <int> p) {
	N = n; P = p;
	d = 0; l = 0; r = N;
	pos.clear();
}

void ReceiveB(bool y) {
	++cnt_r;
	if (cnt_r <= 4) d = d << 1 | y;
	else if (cnt_r <= d + 4) (y ? l : r) = l + r >> 1;
	if (cnt_r < d + 4) return;
	if (cnt_r == d + 4) {
		int m = l + r >> 1;
		pos.push_back(m);
		int x = m - 1, y = m + 1;
		while (x >= l || y < r) {
			if (y == r || (x >= l && P[x] > P[y])) pos.push_back(x--);
			else pos.push_back(x + 1), ++y;
		}
		tl = 1, tr = r - l - 2;
	} else {
		int tm = tl + tr >> 1;
		if (y) tr = tm - 1;
		else tl = tm + 1;
	}
	if (cnt_r < 18 && tl <= tr) {
		int tm = tl + tr >> 1;
		int sz = __lg(pos[tl - 1] - pos[tr + 1]) + 1;
		int v = pos[tm] - pos[tr + 1];
		REPD(i, sz) SendB(BIT(v, i));
	} else {
		--tl; ++tr;
		int p = -1;
		FORE(i, pos[tl], pos[tl] + tl) if (p == -1 || P[p] > P[i]) p = i;
		if (p != -1) {
			int sz = __lg(tl) + 1;
			REPD(i, sz) SendB(BIT(p - pos[tl], i));
		}
		vector <int> lst;
		FOR(i, pos[tr], pos[tl]) lst.push_back(i);
		if (p != -1) lst.push_back(p);
		FORE(i, pos[tl] + tl + 1, pos[tr] + tr) lst.push_back(i);
		stack <int> st;
		for (int i: lst) {
			while (!st.empty() && P[i] < st.top()) {
				SendB(0);
				st.pop();
			}
			st.push(P[i]);
			SendB(1);
		}
	}
}

Compilation message (stderr)

Anna.cpp: In function 'void InitA(int, int, int)':
Anna.cpp:61:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   61 |    int m = l + r >> 1;
      |            ~~^~~
Anna.cpp:72:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   72 |   px = l + r >> 1;
      |        ~~^~~
Anna.cpp: In function 'void ReceiveA(bool)':
Anna.cpp:90:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   90 |    int m = l + r >> 1;
      |            ~~^~~

Bruno.cpp: In function 'void ReceiveB(bool)':
Bruno.cpp:61:43: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   61 |  else if (cnt_r <= d + 4) (y ? l : r) = l + r >> 1;
      |                                         ~~^~~
Bruno.cpp:64:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   64 |   int m = l + r >> 1;
      |           ~~^~~
Bruno.cpp:73:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   73 |   int tm = tl + tr >> 1;
      |            ~~~^~~~
Bruno.cpp:78:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   78 |   int tm = tl + tr >> 1;
      |            ~~~^~~~

• Subtask 1: 0 / 1
• Subtask 2: 0 / 9
• Subtask 3: 90 / 90