Submission #815153

#	Time	Username	Problem	Language	Result	Execution time	Memory
815153		marvinthang	Cell Automaton (JOI23_cell)	C++17	32 / 100	226 ms	43404 KiB

cell

/*************************************
*    author: marvinthang             *
*    created: 08.08.2023 18:39:30    *
*************************************/

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

// end of template

const int MAX_N = 1e5 + 5;
const int MAX_Q = 5e5 + 5;
const int dx[] = {0, 1, 0, -1};
const int dy[] = {1, 0, -1, 0};

int N, Q, T[MAX_Q];
pair <int, int> points[MAX_N];

void init(void) {
	cin >> N >> Q;
	REP(i, N) cin >> points[i];
	REP(i, Q) cin >> T[i];
}

namespace SUBTASK_2 {

	static const int MAXD = 1023;
	int dist[MAXD * 4][MAXD * 4], cnt[MAXD];

	bool checkSub(void) {
		REP(i, N) if (abs(points[i].fi) > 1000 || abs(points[i].se) > 1000) return false;
		REP(i, Q) if (T[i] > 1000) return false;
		return true;
	}

	void solve(void) {
		queue <pair <int, int>> q;
		REP(i, N) {
			auto [x, y] = points[i];
			x += MAXD + MAXD;
			y += MAXD + MAXD;
			dist[x][y] = 1;
			q.emplace(x, y);
		}
		while (!q.empty()) {
			auto [x, y] = q.front(); q.pop();
			++cnt[dist[x][y] - 1];
			if (dist[x][y] >= 1001) continue;
			REP(d, 4) {
				int u = x + dx[d];
				int v = y + dy[d];
				if (!dist[u][v]) {
					dist[u][v] = dist[x][y] + 1;
					q.emplace(u, v);
				}
			}
		}
		REP(i, Q) cout << cnt[T[i]] << '\n';
	}

}

namespace SUBTASK_4 {

	bool checkSub(void) {
		REP(i, N) if (points[i].fi != points[i].se) return false;
		return true;
	}

	void solve(void) {
		sort(points, points + N);
		vector <int> diff(N - 1);
		REP(i, N - 1) diff[i] = points[i + 1].fi - points[i].fi;
		sort(ALL(diff));
		int ptr = 0;
		long long sum_diff = 0;
		REP(i, Q) {
			if (!T[i]) {
				cout << N << '\n';
				continue;
			}
			while (ptr < N - 1 && diff[ptr] < T[i]) sum_diff += diff[ptr++];
			int r_ptr = ptr;
			while (r_ptr < N - 1 && diff[r_ptr] == T[i]) sum_diff += diff[r_ptr++];
			long long res = 0;
			res += 1LL * (r_ptr - ptr) * (T[i] - 1);
			res += sum_diff * 2;
			res += 4LL * T[i] * (N - r_ptr);
			cout << res << '\n';
			ptr = r_ptr;
		}
	}

}

void process(void) {
	if (SUBTASK_2 :: checkSub()) {
		SUBTASK_2 :: solve();
		return;
	}
	if (SUBTASK_4 :: checkSub()) {
		SUBTASK_4 :: solve();
		return;
	}
}

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

Compilation message (stderr)

cell.cpp: In function 'int main()':
cell.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); }
      |                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
cell.cpp:145:2: note: in expansion of macro 'file'
  145 |  file("cell");
      |  ^~~~
cell.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); }
      |                                                                                       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
cell.cpp:145:2: note: in expansion of macro 'file'
  145 |  file("cell");
      |  ^~~~

• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 8 / 8
• Subtask 4: 8 / 8
• Subtask 5: 0 / 17
• Subtask 6: 0 / 25
• Subtask 7: 0 / 26