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답안 #1099991

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1099991 2024-10-12T10:33:49 Z marvinthang Tricks of the Trade (CEOI23_trade) C++17
100 / 100
 1388 ms 51596 KB 
/*************************************
*    author: marvinthang             *
*    created: 14.03.2024 19:06:02    *
*************************************/

#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 << '}'; }
template <class A, class B> bool minimize(A &a, B b)  { return a > b ? a = b, true : false; }
template <class A, class B> bool maximize(A &a, B b)  { return a < b ? a = b, true : false; }

// end of template

const long long INF = 1e18;

void process(void) {
	int n, k; cin >> n >> k;
	vector <int> buy(n), sell(n); cin >> buy >> sell;
	priority_queue <pair <int, int>, vector<pair <int, int>>, greater<pair <int, int>>> k_largest;
    priority_queue <pair <int, int>> remains;
    int sz_kl = 0;
    long long cur_sum = 0;
    int cur_l = 0, cur_r = 0;
    vector <int> in_pq(n);
    auto add = [&] (int i) {
        cur_sum -= buy[i];
        if (sz_kl < k) {
            cur_sum += sell[i];
            k_largest.emplace(sell[i], i); in_pq[i] = 2;
            ++sz_kl;
        } else {
            while (in_pq[k_largest.top().se] != 2) k_largest.pop();
            auto [sell_j, j] = k_largest.top();
            if (sell[i] > sell_j) {
                remains.emplace(sell_j, j); k_largest.pop(); in_pq[j] = 1;
                k_largest.emplace(sell[i], i); in_pq[i] = 2;
                cur_sum += sell[i] - sell_j;
            } else {
                remains.emplace(sell[i], i);
                in_pq[i] = 1;
            }
        }
    };
    auto del = [&] (int i) {
        cur_sum += buy[i];
        if (in_pq[i] == 2) {
            while (in_pq[remains.top().se] != 1) remains.pop();
            auto [sell_j, j] = remains.top(); remains.pop();
            k_largest.emplace(sell_j, j); in_pq[j] = 2;
            cur_sum += sell_j - sell[i];
        }
        in_pq[i] = 0;
    };
	auto calc = [&] (int l, int r) {
		while (cur_r < r) add(cur_r++);
		while (cur_l > l) add(--cur_l);
		while (cur_r > r) del(--cur_r);
		while (cur_l < l) del(cur_l++);
		return cur_sum;
	};
	vector <long long> dp(n, -INF);
	vector <int> opt(n);
	auto solve = [&] (auto &&self, int l, int r, int from, int to) -> void {
		if (l > r) return;
		int m = l + r >> 1;
		FORE(i, max(from, m + k), to) if (maximize(dp[m], calc(m, i))) opt[m] = i;
		self(self, l, m - 1, from, opt[m]);
		self(self, m + 1, r, opt[m], to);
	};
	solve(solve, 0, n - k, k, n);
	long long max_profit = *max_element(ALL(dp));
	cout << max_profit << '\n';
	int r = n;
	vector <vector <int>> insertAt(n), eraseAt(n);
	REPD(l, n) if (dp[l] == max_profit) {
		FORDE(i, r, opt[l]) if (calc(l, i) == max_profit) {
			while (in_pq[k_largest.top().se] != 2) k_largest.pop();
			insertAt[l].push_back(k_largest.top().fi);
			if (i < n) eraseAt[i].push_back(k_largest.top().fi);
		}
		r = opt[l];
	}
	multiset <int> current;
	REP(i, n) {
		for (int v: insertAt[i]) current.insert(v);
		for (int v: eraseAt[i]) current.erase(current.find(v));
		cout << (!current.empty() && sell[i] >= *current.begin());
	}
}

int main(void) {
	ios_base::sync_with_stdio(false); cin.tie(nullptr); // cout.tie(nullptr);
	file("trade");
	// int t; cin >> t; while (t--)
	process();
	// cerr << "Time elapsed: " << TIME << " s.\n";
	return (0^0);
}

Compilation message

trade.cpp: In instantiation of 'process()::<lambda(auto:23&&, int, int, int, int)> [with auto:23 = process()::<lambda(auto:23&&, int, int, int, int)>&]':
trade.cpp:103:29:   required from here
trade.cpp:98:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   98 |   int m = l + r >> 1;
      |           ~~^~~
trade.cpp: In function 'int main()':
trade.cpp:30:61: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
trade.cpp:126:2: note: in expansion of macro 'file'
  126 |  file("trade");
      |  ^~~~
trade.cpp:30:94: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                                                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
trade.cpp:126:2: note: in expansion of macro 'file'
  126 |  file("trade");
      |  ^~~~

Subtask #0
0.0 / 0.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 448 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 448 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 2 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 464 KB Output is correct
14 Correct 1 ms 456 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 408 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 2 ms 860 KB Output is correct
24 Correct 17 ms 976 KB Output is correct
25 Correct 22 ms 1464 KB Output is correct
26 Correct 17 ms 1308 KB Output is correct
27 Correct 13 ms 1564 KB Output is correct
28 Correct 15 ms 1000 KB Output is correct
29 Correct 11 ms 1404 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 657 ms 31524 KB Output is correct
3 Correct 738 ms 23504 KB Output is correct
4 Correct 1014 ms 37512 KB Output is correct
5 Correct 1014 ms 30680 KB Output is correct
6 Correct 831 ms 27012 KB Output is correct
7 Correct 865 ms 43444 KB Output is correct
8 Correct 690 ms 23088 KB Output is correct
9 Correct 732 ms 21840 KB Output is correct
10 Correct 726 ms 27776 KB Output is correct

Subtask #4
25.0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 657 ms 31524 KB Output is correct
3 Correct 738 ms 23504 KB Output is correct
4 Correct 1014 ms 37512 KB Output is correct
5 Correct 1014 ms 30680 KB Output is correct
6 Correct 831 ms 27012 KB Output is correct
7 Correct 865 ms 43444 KB Output is correct
8 Correct 690 ms 23088 KB Output is correct
9 Correct 732 ms 21840 KB Output is correct
10 Correct 726 ms 27776 KB Output is correct
11 Correct 1 ms 600 KB Output is correct
12 Correct 611 ms 31960 KB Output is correct
13 Correct 804 ms 23360 KB Output is correct
14 Correct 1006 ms 37060 KB Output is correct
15 Correct 1012 ms 30736 KB Output is correct
16 Correct 785 ms 26996 KB Output is correct
17 Correct 841 ms 43060 KB Output is correct
18 Correct 761 ms 23048 KB Output is correct
19 Correct 768 ms 21672 KB Output is correct
20 Correct 798 ms 27780 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 1 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 1179 ms 23300 KB Output is correct
32 Correct 996 ms 29476 KB Output is correct
33 Correct 1330 ms 47264 KB Output is correct
34 Correct 1056 ms 25564 KB Output is correct
35 Correct 1123 ms 24568 KB Output is correct
36 Correct 973 ms 30096 KB Output is correct
37 Correct 971 ms 28092 KB Output is correct

Subtask #5
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 448 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 464 KB Output is correct
16 Correct 1 ms 456 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 408 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 2 ms 860 KB Output is correct
26 Correct 17 ms 976 KB Output is correct
27 Correct 22 ms 1464 KB Output is correct
28 Correct 17 ms 1308 KB Output is correct
29 Correct 13 ms 1564 KB Output is correct
30 Correct 15 ms 1000 KB Output is correct
31 Correct 11 ms 1404 KB Output is correct
32 Correct 0 ms 600 KB Output is correct
33 Correct 657 ms 31524 KB Output is correct
34 Correct 738 ms 23504 KB Output is correct
35 Correct 1014 ms 37512 KB Output is correct
36 Correct 1014 ms 30680 KB Output is correct
37 Correct 831 ms 27012 KB Output is correct
38 Correct 865 ms 43444 KB Output is correct
39 Correct 690 ms 23088 KB Output is correct
40 Correct 732 ms 21840 KB Output is correct
41 Correct 726 ms 27776 KB Output is correct
42 Correct 1 ms 600 KB Output is correct
43 Correct 611 ms 31960 KB Output is correct
44 Correct 804 ms 23360 KB Output is correct
45 Correct 1006 ms 37060 KB Output is correct
46 Correct 1012 ms 30736 KB Output is correct
47 Correct 785 ms 26996 KB Output is correct
48 Correct 841 ms 43060 KB Output is correct
49 Correct 761 ms 23048 KB Output is correct
50 Correct 768 ms 21672 KB Output is correct
51 Correct 798 ms 27780 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 1 ms 348 KB Output is correct
58 Correct 1 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 1 ms 348 KB Output is correct
61 Correct 1 ms 348 KB Output is correct
62 Correct 1179 ms 23300 KB Output is correct
63 Correct 996 ms 29476 KB Output is correct
64 Correct 1330 ms 47264 KB Output is correct
65 Correct 1056 ms 25564 KB Output is correct
66 Correct 1123 ms 24568 KB Output is correct
67 Correct 973 ms 30096 KB Output is correct
68 Correct 971 ms 28092 KB Output is correct
69 Correct 0 ms 348 KB Output is correct
70 Correct 660 ms 31016 KB Output is correct
71 Correct 806 ms 23504 KB Output is correct
72 Correct 1030 ms 38188 KB Output is correct
73 Correct 997 ms 30764 KB Output is correct
74 Correct 863 ms 27220 KB Output is correct
75 Correct 828 ms 42876 KB Output is correct
76 Correct 711 ms 23052 KB Output is correct
77 Correct 683 ms 21708 KB Output is correct
78 Correct 687 ms 27872 KB Output is correct
79 Correct 0 ms 348 KB Output is correct
80 Correct 1 ms 348 KB Output is correct
81 Correct 1 ms 348 KB Output is correct
82 Correct 0 ms 348 KB Output is correct
83 Correct 1 ms 348 KB Output is correct
84 Correct 1 ms 460 KB Output is correct
85 Correct 0 ms 348 KB Output is correct
86 Correct 1 ms 348 KB Output is correct
87 Correct 1 ms 468 KB Output is correct
88 Correct 1 ms 348 KB Output is correct
89 Correct 1109 ms 23096 KB Output is correct
90 Correct 943 ms 29636 KB Output is correct
91 Correct 1369 ms 47424 KB Output is correct
92 Correct 1083 ms 25548 KB Output is correct
93 Correct 1050 ms 24648 KB Output is correct
94 Correct 966 ms 29428 KB Output is correct
95 Correct 950 ms 28020 KB Output is correct
96 Correct 1 ms 836 KB Output is correct
97 Correct 21 ms 1036 KB Output is correct
98 Correct 16 ms 1464 KB Output is correct
99 Correct 18 ms 1420 KB Output is correct
100 Correct 9 ms 1600 KB Output is correct
101 Correct 11 ms 856 KB Output is correct
102 Correct 9 ms 1216 KB Output is correct
103 Correct 587 ms 41124 KB Output is correct
104 Correct 1164 ms 25192 KB Output is correct
105 Correct 1129 ms 26496 KB Output is correct
106 Correct 1388 ms 35764 KB Output is correct
107 Correct 70 ms 23496 KB Output is correct
108 Correct 939 ms 37804 KB Output is correct
109 Correct 677 ms 47640 KB Output is correct
110 Correct 952 ms 51596 KB Output is correct
111 Correct 352 ms 29760 KB Output is correct
112 Correct 1018 ms 49620 KB Output is correct