Submission #815020

#	Time	Username	Problem	Language	Result	Execution time	Memory
815020		marvinthang	Cell Automaton (JOI23_cell)	C++17	4 / 100	65 ms	18476 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 = 1e5 + 5;
const int MAXD = 1023;
const int dx[] = {0, 1, 0, -1};
const int dy[] = {1, 0, -1, 0};

int N, Q;
pair <int, int> points[MAX];

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

namespace SUBTASK_2 {

	int dist[MAXD * 4][MAXD * 2], cnt[MAXD];

	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);
				}
			}
		}
		while (Q--) {
			int t; cin >> t;
			cout << cnt[t] << '\n';
		}
	}

}

void process(void) {
	int max_d = 0;
	REP(i, N) maximize(max_d, max(abs(points[i].fi), abs(points[i].se)));
	if (max_d < MAXD) {
		SUBTASK_2 :: 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:105:2: note: in expansion of macro 'file'
  105 |  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:105:2: note: in expansion of macro 'file'
  105 |  file("cell");
      |  ^~~~

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