oj.uz

Submission #128396

# Submission time Handle Problem Language Result Execution time Memory
128396 2019-07-10T21:30:54 Z qkxwsm New Home (APIO18_new_home) C++14
47 / 100
 5000 ms 408156 KB 
#include <bits/stdc++.h>

using namespace std;

template<class T, class U>
void ckmin(T &a, U b)
{
	if (a > b) a = b;
}
template<class T, class U>
void ckmax(T &a, U b)
{
	if (a < b) a = b;
}

#define MP make_pair
#define PB push_back
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define FOR(i, a, b) for (auto i = (a); i < (b); i++)
#define FORD(i, a, b) for (auto i = (a) - 1; i >= (b); i--)
#define SZ(x) ((int) ((x).size()))
#define ALL(x) (x).begin(), (x).end()
#define LIM 100000007
#define INF 1000000007
#define LLINF 2696969696969696969ll
#define MAXN 2100013

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
typedef pair<pii, pii> ppp;
typedef pair<pii, int> ppi;

int N, K, Q, S;
vector<ppp> arr;
vector<ppi> quer;
int ans[MAXN];
multiset<int> pts[MAXN];
vector<array<int, 4> > segments;
vector<array<int, 4> > events;
map<pii, vi> cancer;
vpi seg[MAXN];

void ins(int l, int r, int t)
{
	// cerr << "ins " << l << ' ' << r << " time " << t << endl;
	l = (l + r + 1) >> 1;
	cancer[{l, r}].PB(SZ(segments));
	segments.PB({l, r, t, SZ(events) + 1});
}
void del(int l, int r, int t)
{
	// cerr << "del " << l << ' ' << r << " time " << t << endl;
	l = (l + r + 1) >> 1;
	// cerr << "rem " << (cancer[{l, r}]).size() << endl;
	segments[cancer[{l, r}].back()][3] = t;
	cancer[{l, r}].pop_back();
}

void inseg(int w, int L, int R, int a, int b, pii p)
{
	if (a <= L && R <= b)
	{
		seg[w].PB(p);
		return;
	}
	int mid = (L + R) >> 1;
	if (a <= mid) inseg(w << 1, L, mid, a, b, p);
	if (mid < b) inseg(w << 1 | 1, mid + 1, R, a, b, p);
	return;
}
void build(int w, int L, int R)
{
	if (L != R)
	{
		int mid = (L + R) >> 1;
		build(w << 1, L, mid);
		build(w << 1 | 1, mid + 1, R);
	}
	sort(ALL(seg[w]));
	FOR(i, 1, SZ(seg[w]))
	{
		ckmax(seg[w][i].se, seg[w][i - 1].se);
	}
}
int query(int w, int L, int R, int a, int x)
{
	int res = -INF;
	int ind = UB(ALL(seg[w]), MP(x, INF)) - seg[w].begin() - 1;
	if (ind != -1) res = -x + seg[w][ind].se;
	if (L == R) return res;
	int mid = (L + R) >> 1;
	if (a <= mid) ckmax(res, query(w << 1, L, mid, a, x));
	else ckmax(res, query(w << 1 | 1, mid + 1, R, a, x));
	return res;
}

void solve()
{
	//consider distnace functions with negative slope ONLY.
	//arr: something of type t and position p in times (t1, t2)
	//quer: query of position p at time t, qid i
	FOR(i, 0, (1 << (33 - __builtin_clz(SZ(events)))))
	{
		seg[i].clear();
	}
	events.clear();
	cancer.clear();
	segments.clear();
	FOR(i, 0, K) pts[i].clear();
	FOR(i, 0, SZ(arr))
	{
		int t1 = arr[i].se.fi, t2 = arr[i].se.se, ty = arr[i].fi.fi, x = arr[i].fi.se;
		events.PB({t1, -1, ty, x});
		events.PB({t2 + 1, -2, ty, x});
	}
	FOR(i, 0, SZ(quer))
	{
		int t = quer[i].fi.se, x = quer[i].fi.fi, qid = quer[i].se;
		events.PB({t, 0, qid, x});
	}
	sort(ALL(events));
	FOR(i, 0, K)
	{
		pts[i].insert(2 * LIM);
		pts[i].insert(-2 * LIM);
		ins(-2 * LIM, 2 * LIM, 0);
	}
	FOR(i, 0, SZ(events))
	{
		int typ = events[i][2], pos = events[i][3];
		if (events[i][1] == -1)
		{
			auto it = pts[typ].UB(pos);
			int rt = *it, lt = *prev(it);
			pts[typ].insert(pos);
			//then between lt and rt you generate some new segments!
			//at time i you have to erase a segment! and then insert two new segments!
			//WARNING: IF NOT DISTINCT, PLEASE CHECK THIS PLACE
			ins(lt, pos, i + 1);
			ins(pos, rt, i + 1);
			del(lt, rt, i + 1);
		}
		if (events[i][1] == -2)
		{
			pts[typ].erase(pts[typ].find(pos));
			auto it = pts[typ].UB(pos);
			int rt = *it, lt = *prev(it);
			del(lt, pos, i + 1);
			del(pos, rt, i + 1);
			ins(lt, rt, i + 1);
		}
	}
	FOR(i, 0, SZ(segments))
	{
		int l = segments[i][2], r = segments[i][3];
		inseg(1, 0, SZ(events) + 1, l, r, {segments[i][0], segments[i][1]});
	}
	//ok cool we have the segments
	build(1, 0, SZ(events));
	FOR(i, 0, SZ(events))
	{
		if (events[i][1] == 0)
		{
			int qid = events[i][2], pos = events[i][3];
			ckmax(ans[qid], query(1, 0, SZ(events) + 1, i + 1, pos));
			// cerr << "ans " << qid << ' ' << ans[qid] << endl;
		}
	}
}
bool cmp(ppi a, ppi b)
{
	return a.fi.se < b.fi.se;
}

int32_t main()
{
	if (fopen("file.in", "r"))
	{
		freopen("file.in", "r", stdin);
	}
	ios_base::sync_with_stdio(0); cin.tie(0);
	cin >> N >> K >> Q;
	arr.resize(N); quer.resize(Q);
	FOR(i, 0, N)
	{
		cin >> arr[i].fi.se >> arr[i].fi.fi >> arr[i].se.fi >> arr[i].se.se;
		arr[i].fi.fi--;
	}
	sort(ALL(arr));
	FOR(i, 0, Q)
	{
		cin >> quer[i].fi.fi >> quer[i].fi.se; quer[i].se = i;
	}
	sort(ALL(quer), cmp);
	solve();
	FOR(i, 0, N)
	{
		arr[i].fi.se = 100000001 - arr[i].fi.se;
	}
	FOR(i, 0, Q)
	{
		quer[i].fi.fi = 100000001 - quer[i].fi.fi;
	}
	solve();
	//events: OPEN/CLOSE a store at time t, position p, type x, ASK at time t, position p
	FOR(i, 0, Q)
	{
		if (ans[i] >= LIM)
		{
			cout << "-1\n";
			continue;
		}
		// cerr << "ans " << ans[i] << endl;
		cout << ans[i] << '\n';
	}
	return 0;
}

Compilation message

new_home.cpp: In function 'int32_t main()':
new_home.cpp:188:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen("file.in", "r", stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 148220 KB Output is correct
2 Correct 137 ms 148300 KB Output is correct
3 Correct 154 ms 148240 KB Output is correct
4 Correct 136 ms 148344 KB Output is correct
5 Correct 138 ms 148536 KB Output is correct
6 Correct 140 ms 148536 KB Output is correct
7 Correct 140 ms 148612 KB Output is correct
8 Correct 142 ms 148576 KB Output is correct
9 Correct 139 ms 148604 KB Output is correct
10 Correct 140 ms 148688 KB Output is correct
11 Correct 139 ms 148600 KB Output is correct
12 Correct 139 ms 148496 KB Output is correct
13 Correct 138 ms 148540 KB Output is correct
14 Correct 137 ms 148472 KB Output is correct
15 Correct 139 ms 148600 KB Output is correct
16 Correct 141 ms 148600 KB Output is correct
17 Correct 138 ms 148600 KB Output is correct
18 Correct 140 ms 148724 KB Output is correct
19 Correct 140 ms 148636 KB Output is correct
20 Correct 140 ms 148596 KB Output is correct
21 Correct 138 ms 148572 KB Output is correct
22 Correct 140 ms 148728 KB Output is correct
23 Correct 140 ms 148656 KB Output is correct
24 Correct 140 ms 148636 KB Output is correct
25 Correct 140 ms 148600 KB Output is correct
26 Correct 146 ms 148548 KB Output is correct
27 Correct 154 ms 148512 KB Output is correct
28 Correct 139 ms 148696 KB Output is correct
29 Correct 138 ms 148548 KB Output is correct
30 Correct 139 ms 148472 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 148220 KB Output is correct
2 Correct 137 ms 148300 KB Output is correct
3 Correct 154 ms 148240 KB Output is correct
4 Correct 136 ms 148344 KB Output is correct
5 Correct 138 ms 148536 KB Output is correct
6 Correct 140 ms 148536 KB Output is correct
7 Correct 140 ms 148612 KB Output is correct
8 Correct 142 ms 148576 KB Output is correct
9 Correct 139 ms 148604 KB Output is correct
10 Correct 140 ms 148688 KB Output is correct
11 Correct 139 ms 148600 KB Output is correct
12 Correct 139 ms 148496 KB Output is correct
13 Correct 138 ms 148540 KB Output is correct
14 Correct 137 ms 148472 KB Output is correct
15 Correct 139 ms 148600 KB Output is correct
16 Correct 141 ms 148600 KB Output is correct
17 Correct 138 ms 148600 KB Output is correct
18 Correct 140 ms 148724 KB Output is correct
19 Correct 140 ms 148636 KB Output is correct
20 Correct 140 ms 148596 KB Output is correct
21 Correct 138 ms 148572 KB Output is correct
22 Correct 140 ms 148728 KB Output is correct
23 Correct 140 ms 148656 KB Output is correct
24 Correct 140 ms 148636 KB Output is correct
25 Correct 140 ms 148600 KB Output is correct
26 Correct 146 ms 148548 KB Output is correct
27 Correct 154 ms 148512 KB Output is correct
28 Correct 139 ms 148696 KB Output is correct
29 Correct 138 ms 148548 KB Output is correct
30 Correct 139 ms 148472 KB Output is correct
31 Correct 1973 ms 205636 KB Output is correct
32 Correct 499 ms 171108 KB Output is correct
33 Correct 1694 ms 204148 KB Output is correct
34 Correct 1818 ms 204424 KB Output is correct
35 Correct 1870 ms 205392 KB Output is correct
36 Correct 2254 ms 205484 KB Output is correct
37 Correct 1287 ms 200164 KB Output is correct
38 Correct 1291 ms 200100 KB Output is correct
39 Correct 909 ms 193228 KB Output is correct
40 Correct 983 ms 194660 KB Output is correct
41 Correct 1318 ms 198668 KB Output is correct
42 Correct 1378 ms 198888 KB Output is correct
43 Correct 500 ms 175204 KB Output is correct
44 Correct 1282 ms 197988 KB Output is correct
45 Correct 1152 ms 194284 KB Output is correct
46 Correct 964 ms 188260 KB Output is correct
47 Correct 689 ms 185892 KB Output is correct
48 Correct 654 ms 184736 KB Output is correct
49 Correct 841 ms 189412 KB Output is correct
50 Correct 1018 ms 196316 KB Output is correct
51 Correct 825 ms 187740 KB Output is correct

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5033 ms 405764 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5032 ms 408156 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 148220 KB Output is correct
2 Correct 137 ms 148300 KB Output is correct
3 Correct 154 ms 148240 KB Output is correct
4 Correct 136 ms 148344 KB Output is correct
5 Correct 138 ms 148536 KB Output is correct
6 Correct 140 ms 148536 KB Output is correct
7 Correct 140 ms 148612 KB Output is correct
8 Correct 142 ms 148576 KB Output is correct
9 Correct 139 ms 148604 KB Output is correct
10 Correct 140 ms 148688 KB Output is correct
11 Correct 139 ms 148600 KB Output is correct
12 Correct 139 ms 148496 KB Output is correct
13 Correct 138 ms 148540 KB Output is correct
14 Correct 137 ms 148472 KB Output is correct
15 Correct 139 ms 148600 KB Output is correct
16 Correct 141 ms 148600 KB Output is correct
17 Correct 138 ms 148600 KB Output is correct
18 Correct 140 ms 148724 KB Output is correct
19 Correct 140 ms 148636 KB Output is correct
20 Correct 140 ms 148596 KB Output is correct
21 Correct 138 ms 148572 KB Output is correct
22 Correct 140 ms 148728 KB Output is correct
23 Correct 140 ms 148656 KB Output is correct
24 Correct 140 ms 148636 KB Output is correct
25 Correct 140 ms 148600 KB Output is correct
26 Correct 146 ms 148548 KB Output is correct
27 Correct 154 ms 148512 KB Output is correct
28 Correct 139 ms 148696 KB Output is correct
29 Correct 138 ms 148548 KB Output is correct
30 Correct 139 ms 148472 KB Output is correct
31 Correct 1973 ms 205636 KB Output is correct
32 Correct 499 ms 171108 KB Output is correct
33 Correct 1694 ms 204148 KB Output is correct
34 Correct 1818 ms 204424 KB Output is correct
35 Correct 1870 ms 205392 KB Output is correct
36 Correct 2254 ms 205484 KB Output is correct
37 Correct 1287 ms 200164 KB Output is correct
38 Correct 1291 ms 200100 KB Output is correct
39 Correct 909 ms 193228 KB Output is correct
40 Correct 983 ms 194660 KB Output is correct
41 Correct 1318 ms 198668 KB Output is correct
42 Correct 1378 ms 198888 KB Output is correct
43 Correct 500 ms 175204 KB Output is correct
44 Correct 1282 ms 197988 KB Output is correct
45 Correct 1152 ms 194284 KB Output is correct
46 Correct 964 ms 188260 KB Output is correct
47 Correct 689 ms 185892 KB Output is correct
48 Correct 654 ms 184736 KB Output is correct
49 Correct 841 ms 189412 KB Output is correct
50 Correct 1018 ms 196316 KB Output is correct
51 Correct 825 ms 187740 KB Output is correct
52 Correct 1630 ms 211444 KB Output is correct
53 Correct 1300 ms 204388 KB Output is correct
54 Correct 1818 ms 206604 KB Output is correct
55 Correct 1421 ms 204792 KB Output is correct
56 Correct 1397 ms 206932 KB Output is correct
57 Correct 1289 ms 200576 KB Output is correct
58 Correct 1401 ms 203924 KB Output is correct
59 Correct 1437 ms 206732 KB Output is correct
60 Correct 1324 ms 200832 KB Output is correct
61 Correct 664 ms 201520 KB Output is correct
62 Correct 1574 ms 216616 KB Output is correct
63 Correct 1725 ms 209344 KB Output is correct
64 Correct 1782 ms 208732 KB Output is correct
65 Correct 1750 ms 206820 KB Output is correct
66 Correct 1411 ms 200888 KB Output is correct
67 Correct 886 ms 182968 KB Output is correct

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 135 ms 148220 KB Output is correct
2 Correct 137 ms 148300 KB Output is correct
3 Correct 154 ms 148240 KB Output is correct
4 Correct 136 ms 148344 KB Output is correct
5 Correct 138 ms 148536 KB Output is correct
6 Correct 140 ms 148536 KB Output is correct
7 Correct 140 ms 148612 KB Output is correct
8 Correct 142 ms 148576 KB Output is correct
9 Correct 139 ms 148604 KB Output is correct
10 Correct 140 ms 148688 KB Output is correct
11 Correct 139 ms 148600 KB Output is correct
12 Correct 139 ms 148496 KB Output is correct
13 Correct 138 ms 148540 KB Output is correct
14 Correct 137 ms 148472 KB Output is correct
15 Correct 139 ms 148600 KB Output is correct
16 Correct 141 ms 148600 KB Output is correct
17 Correct 138 ms 148600 KB Output is correct
18 Correct 140 ms 148724 KB Output is correct
19 Correct 140 ms 148636 KB Output is correct
20 Correct 140 ms 148596 KB Output is correct
21 Correct 138 ms 148572 KB Output is correct
22 Correct 140 ms 148728 KB Output is correct
23 Correct 140 ms 148656 KB Output is correct
24 Correct 140 ms 148636 KB Output is correct
25 Correct 140 ms 148600 KB Output is correct
26 Correct 146 ms 148548 KB Output is correct
27 Correct 154 ms 148512 KB Output is correct
28 Correct 139 ms 148696 KB Output is correct
29 Correct 138 ms 148548 KB Output is correct
30 Correct 139 ms 148472 KB Output is correct
31 Correct 1973 ms 205636 KB Output is correct
32 Correct 499 ms 171108 KB Output is correct
33 Correct 1694 ms 204148 KB Output is correct
34 Correct 1818 ms 204424 KB Output is correct
35 Correct 1870 ms 205392 KB Output is correct
36 Correct 2254 ms 205484 KB Output is correct
37 Correct 1287 ms 200164 KB Output is correct
38 Correct 1291 ms 200100 KB Output is correct
39 Correct 909 ms 193228 KB Output is correct
40 Correct 983 ms 194660 KB Output is correct
41 Correct 1318 ms 198668 KB Output is correct
42 Correct 1378 ms 198888 KB Output is correct
43 Correct 500 ms 175204 KB Output is correct
44 Correct 1282 ms 197988 KB Output is correct
45 Correct 1152 ms 194284 KB Output is correct
46 Correct 964 ms 188260 KB Output is correct
47 Correct 689 ms 185892 KB Output is correct
48 Correct 654 ms 184736 KB Output is correct
49 Correct 841 ms 189412 KB Output is correct
50 Correct 1018 ms 196316 KB Output is correct
51 Correct 825 ms 187740 KB Output is correct
52 Execution timed out 5033 ms 405764 KB Time limit exceeded
53 Halted 0 ms 0 KB -