Submission #968585

#	Time	Username	Problem	Language	Result	Execution time	Memory
968585		marvinthang	Measures (CEOI22_measures)	C++17	100 / 100	126 ms	32964 KiB

Main

/*************************************
*    author: marvinthang             *
*    created: 23.04.2024 22:44:57    *
*************************************/

#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

const long long INF = 1e18;

int n, m, d;

struct Node {
	long long res, min_val, max_val;
	int cnt;
	Node(): res(0), min_val(INF), max_val(-INF), cnt(0) {}
	Node(long long val): res(0), min_val(val), max_val(val), cnt(1) {}
	Node operator + (const Node &ot) const {
		Node ans;
		ans.res = max({res, ot.res, ot.max_val + 1LL * cnt * d - min_val});
		ans.min_val = min(min_val, ot.min_val + 1LL * cnt * d);
		ans.max_val = max(max_val, ot.max_val + 1LL * cnt * d);
		ans.cnt = cnt + ot.cnt;
		return ans;
	}
};

void process(void) {
	cin >> n >> m >> d;
	m += n;
	vector <int> a(m); cin >> a;
	vector <int> order(m);
	iota(ALL(order), 0);
	sort(ALL(order), [&] (int i, int j) { return a[i] < a[j]; });
	vector <int> pos(m);
	REP(i, m) pos[order[i]] = i;
	vector <Node> st(m * 4 + 23);
	auto update = [&] (auto &&self, int i, int l, int r, int p, int v) -> void {
		if (r - l == 1) {
			st[i] = Node(-v);
			return;
		}
		int m = (l + r) / 2;
		if (p < m) self(self, i << 1, l, m, p, v);
		else self(self, i << 1 | 1, m, r, p, v);
		st[i] = st[i << 1] + st[i << 1 | 1];
	};
	REP(i, m) {
		update(update, 1, 0, m, pos[i], a[i]);
		if (i >= n) cout << st[1].res / 2 << (st[1].res & 1 ? ".5" : "") << ' ';
	}
}

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

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.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); }
      |                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:92:2: note: in expansion of macro 'file'
   92 |  file("measures");
      |  ^~~~
Main.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); }
      |                                                                                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:92:2: note: in expansion of macro 'file'
   92 |  file("measures");
      |  ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 14 / 14
• Subtask 3: 35 / 35
• Subtask 4: 41 / 41