oj.uz

Submission #426431

# Submission time Handle Problem Language Result Execution time Memory
426431 2021-06-14T02:55:06 Z Kevin_Zhang_TW IOI Fever (JOI21_fever) C++17
11 / 100
 25 ms 28756 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
 
const int MAX_N = 300010;
const ll inf = 1ll << 55;
 
int n;
int x[MAX_N], y[MAX_N];
 
ll dp[MAX_N * 4];
vector<pair<int,int>> edge[MAX_N * 4];
 
int dis(int i, int j) { return abs(x[i]-x[j]) + abs(y[i]-y[j]); }
pair<int,int> adv(int i, int dir, int j) {
	int a = x[i], b = y[i];
	if (dir == 0) a += j;
	if (dir == 1) b += j;
	if (dir == 2) a -= j;
	if (dir == 3) b -= j;
	return make_pair(a, b);
}
 
void init() {
	for (int i = 0;i < n;++i)
		for (int j = i+1;j < n;++j) {
			for (int k = 0;k < 4;++k)
				for (int l = 0;l < 4;++l) {
					int h = dis(i, j) / 2;
					if (adv(i, k, h) == adv(j, l, h)) {
						int a = i * 4 + k, b = j * 4 + l;
						edge[a].pb(b, h);
						edge[b].pb(a, h);
					} 
				} 
		}
}
 
int solve(int d) {
	fill(dp, dp + n * 4, inf);
	//priority_queue<pair<ll,ll>, vector<pair<ll,ll>>, greater<pair<ll,ll>>> pq;

	stack<pair<ll,ll>> pq;
 
	auto upd = [&](int id, ll t) {
		if (chmin(dp[id], t))
			pq.emplace(t, id);
	};
 
	upd(d, 0);
	vector<int> vis(n * 4);
	while (pq.size()) {
		auto [t, id] = pq.top(); pq.pop();
		if (vis[id]) continue;
		vis[id] = true;
		//if (t != dp[id]) continue;
		for (auto [u, w] : edge[id]) {
			if (w >= t)
				upd(u, w);
		} 
	} 
 
	int res = 0;
	for (int i = 0;i < n;++i) {
		ll d = inf;
		for (int j = 0;j < 4;++j)
			chmin(d, dp[i * 4 + j]);
		if (d < inf) ++res;
	}
	return res;
}
int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n;
	for (int i = 0;i < n;++i) cin >> x[i] >> y[i], x[i] *= 2, y[i] *= 2;
 
	init();
 
	int res = 1;
	for (int i = 0;i < 4;++i)
		chmax(res, solve(i));
 
	cout << res << '\n'; 
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28492 KB Output is correct
2 Correct 22 ms 28460 KB Output is correct
3 Correct 22 ms 28496 KB Output is correct
4 Correct 20 ms 28496 KB Output is correct
5 Correct 19 ms 28496 KB Output is correct
6 Correct 25 ms 28492 KB Output is correct
7 Correct 18 ms 28412 KB Output is correct
8 Correct 18 ms 28428 KB Output is correct
9 Correct 19 ms 28400 KB Output is correct
10 Correct 19 ms 28440 KB Output is correct
11 Correct 24 ms 28456 KB Output is correct
12 Correct 18 ms 28492 KB Output is correct
13 Correct 20 ms 28484 KB Output is correct
14 Correct 20 ms 28496 KB Output is correct
15 Correct 20 ms 28492 KB Output is correct
16 Correct 20 ms 28480 KB Output is correct
17 Correct 19 ms 28492 KB Output is correct
18 Correct 20 ms 28492 KB Output is correct
19 Correct 20 ms 28408 KB Output is correct
20 Correct 18 ms 28496 KB Output is correct
21 Correct 19 ms 28504 KB Output is correct
22 Correct 21 ms 28380 KB Output is correct
23 Correct 24 ms 28492 KB Output is correct
24 Correct 20 ms 28496 KB Output is correct
25 Correct 22 ms 28492 KB Output is correct
26 Correct 20 ms 28440 KB Output is correct
27 Correct 20 ms 28408 KB Output is correct
28 Correct 20 ms 28492 KB Output is correct
29 Correct 20 ms 28492 KB Output is correct
30 Correct 19 ms 28500 KB Output is correct
31 Correct 18 ms 28404 KB Output is correct
32 Correct 22 ms 28492 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28492 KB Output is correct
2 Correct 22 ms 28460 KB Output is correct
3 Correct 22 ms 28496 KB Output is correct
4 Correct 20 ms 28496 KB Output is correct
5 Correct 19 ms 28496 KB Output is correct
6 Correct 25 ms 28492 KB Output is correct
7 Correct 18 ms 28412 KB Output is correct
8 Correct 18 ms 28428 KB Output is correct
9 Correct 19 ms 28400 KB Output is correct
10 Correct 19 ms 28440 KB Output is correct
11 Correct 24 ms 28456 KB Output is correct
12 Correct 18 ms 28492 KB Output is correct
13 Correct 20 ms 28484 KB Output is correct
14 Correct 20 ms 28496 KB Output is correct
15 Correct 20 ms 28492 KB Output is correct
16 Correct 20 ms 28480 KB Output is correct
17 Correct 19 ms 28492 KB Output is correct
18 Correct 20 ms 28492 KB Output is correct
19 Correct 20 ms 28408 KB Output is correct
20 Correct 18 ms 28496 KB Output is correct
21 Correct 19 ms 28504 KB Output is correct
22 Correct 21 ms 28380 KB Output is correct
23 Correct 24 ms 28492 KB Output is correct
24 Correct 20 ms 28496 KB Output is correct
25 Correct 22 ms 28492 KB Output is correct
26 Correct 20 ms 28440 KB Output is correct
27 Correct 20 ms 28408 KB Output is correct
28 Correct 20 ms 28492 KB Output is correct
29 Correct 20 ms 28492 KB Output is correct
30 Correct 19 ms 28500 KB Output is correct
31 Correct 18 ms 28404 KB Output is correct
32 Correct 22 ms 28492 KB Output is correct
33 Correct 19 ms 28492 KB Output is correct
34 Correct 17 ms 28492 KB Output is correct
35 Correct 19 ms 28472 KB Output is correct
36 Correct 18 ms 28500 KB Output is correct
37 Correct 20 ms 28584 KB Output is correct
38 Correct 19 ms 28492 KB Output is correct
39 Correct 21 ms 28500 KB Output is correct
40 Correct 19 ms 28492 KB Output is correct
41 Correct 23 ms 28440 KB Output is correct
42 Correct 19 ms 28420 KB Output is correct
43 Correct 18 ms 28396 KB Output is correct
44 Correct 19 ms 28436 KB Output is correct
45 Incorrect 19 ms 28520 KB Output isn't correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 28492 KB Output is correct
2 Correct 22 ms 28424 KB Output is correct
3 Correct 20 ms 28428 KB Output is correct
4 Correct 19 ms 28500 KB Output is correct
5 Correct 23 ms 28444 KB Output is correct
6 Correct 20 ms 28756 KB Output is correct
7 Correct 19 ms 28748 KB Output is correct
8 Correct 21 ms 28716 KB Output is correct

Subtask #4
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28492 KB Output is correct
2 Correct 22 ms 28460 KB Output is correct
3 Correct 22 ms 28496 KB Output is correct
4 Correct 20 ms 28496 KB Output is correct
5 Correct 19 ms 28496 KB Output is correct
6 Correct 25 ms 28492 KB Output is correct
7 Correct 18 ms 28412 KB Output is correct
8 Correct 18 ms 28428 KB Output is correct
9 Correct 19 ms 28400 KB Output is correct
10 Correct 19 ms 28440 KB Output is correct
11 Correct 24 ms 28456 KB Output is correct
12 Correct 18 ms 28492 KB Output is correct
13 Correct 20 ms 28484 KB Output is correct
14 Correct 20 ms 28496 KB Output is correct
15 Correct 20 ms 28492 KB Output is correct
16 Correct 20 ms 28480 KB Output is correct
17 Correct 19 ms 28492 KB Output is correct
18 Correct 20 ms 28492 KB Output is correct
19 Correct 20 ms 28408 KB Output is correct
20 Correct 18 ms 28496 KB Output is correct
21 Correct 19 ms 28504 KB Output is correct
22 Correct 21 ms 28380 KB Output is correct
23 Correct 24 ms 28492 KB Output is correct
24 Correct 20 ms 28496 KB Output is correct
25 Correct 22 ms 28492 KB Output is correct
26 Correct 20 ms 28440 KB Output is correct
27 Correct 20 ms 28408 KB Output is correct
28 Correct 20 ms 28492 KB Output is correct
29 Correct 20 ms 28492 KB Output is correct
30 Correct 19 ms 28500 KB Output is correct
31 Correct 18 ms 28404 KB Output is correct
32 Correct 22 ms 28492 KB Output is correct
33 Correct 19 ms 28492 KB Output is correct
34 Correct 17 ms 28492 KB Output is correct
35 Correct 19 ms 28472 KB Output is correct
36 Correct 18 ms 28500 KB Output is correct
37 Correct 20 ms 28584 KB Output is correct
38 Correct 19 ms 28492 KB Output is correct
39 Correct 21 ms 28500 KB Output is correct
40 Correct 19 ms 28492 KB Output is correct
41 Correct 23 ms 28440 KB Output is correct
42 Correct 19 ms 28420 KB Output is correct
43 Correct 18 ms 28396 KB Output is correct
44 Correct 19 ms 28436 KB Output is correct
45 Incorrect 19 ms 28520 KB Output isn't correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28492 KB Output is correct
2 Correct 22 ms 28460 KB Output is correct
3 Correct 22 ms 28496 KB Output is correct
4 Correct 20 ms 28496 KB Output is correct
5 Correct 19 ms 28496 KB Output is correct
6 Correct 25 ms 28492 KB Output is correct
7 Correct 18 ms 28412 KB Output is correct
8 Correct 18 ms 28428 KB Output is correct
9 Correct 19 ms 28400 KB Output is correct
10 Correct 19 ms 28440 KB Output is correct
11 Correct 24 ms 28456 KB Output is correct
12 Correct 18 ms 28492 KB Output is correct
13 Correct 20 ms 28484 KB Output is correct
14 Correct 20 ms 28496 KB Output is correct
15 Correct 20 ms 28492 KB Output is correct
16 Correct 20 ms 28480 KB Output is correct
17 Correct 19 ms 28492 KB Output is correct
18 Correct 20 ms 28492 KB Output is correct
19 Correct 20 ms 28408 KB Output is correct
20 Correct 18 ms 28496 KB Output is correct
21 Correct 19 ms 28504 KB Output is correct
22 Correct 21 ms 28380 KB Output is correct
23 Correct 24 ms 28492 KB Output is correct
24 Correct 20 ms 28496 KB Output is correct
25 Correct 22 ms 28492 KB Output is correct
26 Correct 20 ms 28440 KB Output is correct
27 Correct 20 ms 28408 KB Output is correct
28 Correct 20 ms 28492 KB Output is correct
29 Correct 20 ms 28492 KB Output is correct
30 Correct 19 ms 28500 KB Output is correct
31 Correct 18 ms 28404 KB Output is correct
32 Correct 22 ms 28492 KB Output is correct
33 Correct 19 ms 28492 KB Output is correct
34 Correct 17 ms 28492 KB Output is correct
35 Correct 19 ms 28472 KB Output is correct
36 Correct 18 ms 28500 KB Output is correct
37 Correct 20 ms 28584 KB Output is correct
38 Correct 19 ms 28492 KB Output is correct
39 Correct 21 ms 28500 KB Output is correct
40 Correct 19 ms 28492 KB Output is correct
41 Correct 23 ms 28440 KB Output is correct
42 Correct 19 ms 28420 KB Output is correct
43 Correct 18 ms 28396 KB Output is correct
44 Correct 19 ms 28436 KB Output is correct
45 Incorrect 19 ms 28520 KB Output isn't correct

Subtask #6
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28492 KB Output is correct
2 Correct 22 ms 28460 KB Output is correct
3 Correct 22 ms 28496 KB Output is correct
4 Correct 20 ms 28496 KB Output is correct
5 Correct 19 ms 28496 KB Output is correct
6 Correct 25 ms 28492 KB Output is correct
7 Correct 18 ms 28412 KB Output is correct
8 Correct 18 ms 28428 KB Output is correct
9 Correct 19 ms 28400 KB Output is correct
10 Correct 19 ms 28440 KB Output is correct
11 Correct 24 ms 28456 KB Output is correct
12 Correct 18 ms 28492 KB Output is correct
13 Correct 20 ms 28484 KB Output is correct
14 Correct 20 ms 28496 KB Output is correct
15 Correct 20 ms 28492 KB Output is correct
16 Correct 20 ms 28480 KB Output is correct
17 Correct 19 ms 28492 KB Output is correct
18 Correct 20 ms 28492 KB Output is correct
19 Correct 20 ms 28408 KB Output is correct
20 Correct 18 ms 28496 KB Output is correct
21 Correct 19 ms 28504 KB Output is correct
22 Correct 21 ms 28380 KB Output is correct
23 Correct 24 ms 28492 KB Output is correct
24 Correct 20 ms 28496 KB Output is correct
25 Correct 22 ms 28492 KB Output is correct
26 Correct 20 ms 28440 KB Output is correct
27 Correct 20 ms 28408 KB Output is correct
28 Correct 20 ms 28492 KB Output is correct
29 Correct 20 ms 28492 KB Output is correct
30 Correct 19 ms 28500 KB Output is correct
31 Correct 18 ms 28404 KB Output is correct
32 Correct 22 ms 28492 KB Output is correct
33 Correct 19 ms 28492 KB Output is correct
34 Correct 17 ms 28492 KB Output is correct
35 Correct 19 ms 28472 KB Output is correct
36 Correct 18 ms 28500 KB Output is correct
37 Correct 20 ms 28584 KB Output is correct
38 Correct 19 ms 28492 KB Output is correct
39 Correct 21 ms 28500 KB Output is correct
40 Correct 19 ms 28492 KB Output is correct
41 Correct 23 ms 28440 KB Output is correct
42 Correct 19 ms 28420 KB Output is correct
43 Correct 18 ms 28396 KB Output is correct
44 Correct 19 ms 28436 KB Output is correct
45 Incorrect 19 ms 28520 KB Output isn't correct

Subtask #7
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 28492 KB Output is correct
2 Correct 22 ms 28460 KB Output is correct
3 Correct 22 ms 28496 KB Output is correct
4 Correct 20 ms 28496 KB Output is correct
5 Correct 19 ms 28496 KB Output is correct
6 Correct 25 ms 28492 KB Output is correct
7 Correct 18 ms 28412 KB Output is correct
8 Correct 18 ms 28428 KB Output is correct
9 Correct 19 ms 28400 KB Output is correct
10 Correct 19 ms 28440 KB Output is correct
11 Correct 24 ms 28456 KB Output is correct
12 Correct 18 ms 28492 KB Output is correct
13 Correct 20 ms 28484 KB Output is correct
14 Correct 20 ms 28496 KB Output is correct
15 Correct 20 ms 28492 KB Output is correct
16 Correct 20 ms 28480 KB Output is correct
17 Correct 19 ms 28492 KB Output is correct
18 Correct 20 ms 28492 KB Output is correct
19 Correct 20 ms 28408 KB Output is correct
20 Correct 18 ms 28496 KB Output is correct
21 Correct 19 ms 28504 KB Output is correct
22 Correct 21 ms 28380 KB Output is correct
23 Correct 24 ms 28492 KB Output is correct
24 Correct 20 ms 28496 KB Output is correct
25 Correct 22 ms 28492 KB Output is correct
26 Correct 20 ms 28440 KB Output is correct
27 Correct 20 ms 28408 KB Output is correct
28 Correct 20 ms 28492 KB Output is correct
29 Correct 20 ms 28492 KB Output is correct
30 Correct 19 ms 28500 KB Output is correct
31 Correct 18 ms 28404 KB Output is correct
32 Correct 22 ms 28492 KB Output is correct
33 Correct 19 ms 28492 KB Output is correct
34 Correct 17 ms 28492 KB Output is correct
35 Correct 19 ms 28472 KB Output is correct
36 Correct 18 ms 28500 KB Output is correct
37 Correct 20 ms 28584 KB Output is correct
38 Correct 19 ms 28492 KB Output is correct
39 Correct 21 ms 28500 KB Output is correct
40 Correct 19 ms 28492 KB Output is correct
41 Correct 23 ms 28440 KB Output is correct
42 Correct 19 ms 28420 KB Output is correct
43 Correct 18 ms 28396 KB Output is correct
44 Correct 19 ms 28436 KB Output is correct
45 Incorrect 19 ms 28520 KB Output isn't correct