oj.uz

Submission #531736

# Submission time Handle Problem Language Result Execution time Memory
531736 2022-03-01T11:06:46 Z akhan42 Examination (JOI19_examination) C++17
43 / 100
 3000 ms 37992 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;

#define F first
#define S second
#define forn(i, n) for(int i = 0; i < n; ++i)
#define forbn(i, b, n) for(int i = b; i < n; ++i)
#define sz(v) (int)v.size()
#define pb push_back
#define eb emplace_back
#define all(v) v.begin(), v.end()
#define min3(a, b, c) min(a, min(b, c))
#define at(m, k) (m.find(k) != m.end() ? m[k] : 0)

typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef long long ll;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

template <class T> inline void mineq(T &a, T b) { a = min(a, b); }
template <class T> inline void maxeq(T &a, T b) { a = max(a, b); }


const int MX = 200 * 1000 + 10;
int n, q;
int a[MX], b[MX], c[MX];
vi a2i[MX], b2i[MX];
int cl[MX];
int S = 450;


struct Fenw {
	int mx = MX - 1;
	vi bit;

	Fenw() {
		bit.assign(MX, 0);
	}

	void upd(int i, int v) {
		for(i += 1; i <= mx; i += i & (-i))
			bit[i] += v;
	}

	int psum(int i) {
		int sum = 0;
		for(; i > 0; i -= i & (-i))
			sum += bit[i];
		return sum;
	}

	int query(int cc) {
		return psum(mx) - psum(cc);
	}
};



bool cmp(pair<ii, ii> p1, pair<ii, ii> p2) {
	ii a = p1.F, b = p2.F;

	if(cl[a.F] != cl[b.F])
		return a.F < b.F;
	return (cl[a.F] % 2) ? a.S > b.S : a.S < b.S;
}


struct Mo {
	int l, r;
	Fenw fenw;

	void init(int l, int r) {
		this->l = l, this->r = r;

		forn(i, n)
			if(a[i] >= l && b[i] >= r)
				fenw.upd(c[i], 1);
	}

	void add_left() {
		l -= 1;
		for(int i: a2i[l])
			if(b[i] >= r)
				fenw.upd(c[i], 1);
	}

	void pop_left() {
		for(int i: a2i[l])
			if(b[i] >= r)
				fenw.upd(c[i], -1);
		l += 1;
	}

	void add_right() {
		for(int i: b2i[r])
			if(a[i] >= l)
				fenw.upd(c[i], -1);
		r += 1;
	}

	void pop_right() {
		r -= 1;
		for(int i: b2i[r])
			if(a[i] >= l)
				fenw.upd(c[i], 1);
	}

	int get_ans(int cc) {
		return fenw.query(cc);
	}
};


void comp(vi& v) {
	set<int> sl;
	for(int el: v)
		sl.insert(el);

	int ct = 0;
	map<int, int> v2i;
	for(int el: sl)
		v2i[el] = ct++;

	for(int& el: v)
		el = v2i[el];
}


void solve()
{
	cin >> n >> q;

	vi as, bs, cs;
	forn(i, n) {
		int x, y;
		cin >> x >> y;

		as.pb(x);
		bs.pb(y);
		cs.pb(x + y);
	}

	forn(_, q) {
		int l, r, cc;
		cin >> l >> r >> cc;

		as.pb(l);
		bs.pb(r);
		cs.pb(cc);
	}

	comp(as);
	comp(bs);
	comp(cs);

	forn(i, n)
	{
		a[i] = as[i];
		b[i] = bs[i];
		c[i] = cs[i];

		a2i[a[i]].pb(i);
		b2i[b[i]].pb(i);
	}

	int ct = 0, i = 0;
	forn(l, MX) {
		if(ct != 0 && ct + sz(a2i[l]) > S) {
			ct = sz(a2i[l]);
			i += 1;
		} else {
			ct += sz(a2i[l]);
		}
		cl[l] = i;
	}

	vector<pair<ii, ii>> qs;

	forn(ind, q) {
		int l = as[ind + n], r = bs[ind + n], cc = cs[ind + n];

		qs.pb({{l, r}, {cc, ind}});
	}

	sort(all(qs), cmp);

	Mo mo;
	vi ans(q);

	forn(i, q) {
		int l = qs[i].F.F, r = qs[i].F.S, cc = qs[i].S.F, ind = qs[i].S.S;

		if(i == 0) {
			mo.init(l, r);
		}
		else {
			while(l != mo.l || r != mo.r) {
				if(l < mo.l)
					mo.add_left();
				else if(r > mo.r)
					mo.add_right();
				else if(l > mo.l)
					mo.pop_left();
				else
					mo.pop_right();
			}
		}

		ans[ind] = mo.get_ans(cc);
//		cout << l << ' ' << r << ' ' << ans[ind] << '\n';
	}

	for(int el: ans)
		cout << el << '\n';
}


int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);

//	freopen("haybales.in", "r", stdin);
//	freopen("haybales.out", "w", stdout);

	int t = 1;
//	cin >> t;
	while(t--)
		solve();
}

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11212 KB Output is correct
2 Correct 7 ms 11220 KB Output is correct
3 Correct 6 ms 11184 KB Output is correct
4 Correct 6 ms 11212 KB Output is correct
5 Correct 6 ms 11248 KB Output is correct
6 Correct 8 ms 11228 KB Output is correct
7 Correct 36 ms 12228 KB Output is correct
8 Correct 32 ms 12148 KB Output is correct
9 Correct 32 ms 12156 KB Output is correct
10 Correct 31 ms 12064 KB Output is correct
11 Correct 15 ms 12068 KB Output is correct
12 Correct 10 ms 11596 KB Output is correct
13 Correct 36 ms 12180 KB Output is correct
14 Correct 37 ms 12172 KB Output is correct
15 Correct 29 ms 12164 KB Output is correct
16 Correct 13 ms 11976 KB Output is correct
17 Correct 26 ms 12052 KB Output is correct
18 Correct 10 ms 11664 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2321 ms 22756 KB Output is correct
2 Correct 2256 ms 22748 KB Output is correct
3 Correct 2091 ms 22748 KB Output is correct
4 Correct 1035 ms 22716 KB Output is correct
5 Correct 425 ms 22728 KB Output is correct
6 Correct 132 ms 18616 KB Output is correct
7 Correct 843 ms 22752 KB Output is correct
8 Correct 1039 ms 22748 KB Output is correct
9 Correct 1000 ms 23228 KB Output is correct
10 Correct 284 ms 22480 KB Output is correct
11 Correct 874 ms 22660 KB Output is correct
12 Correct 61 ms 18216 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2321 ms 22756 KB Output is correct
2 Correct 2256 ms 22748 KB Output is correct
3 Correct 2091 ms 22748 KB Output is correct
4 Correct 1035 ms 22716 KB Output is correct
5 Correct 425 ms 22728 KB Output is correct
6 Correct 132 ms 18616 KB Output is correct
7 Correct 843 ms 22752 KB Output is correct
8 Correct 1039 ms 22748 KB Output is correct
9 Correct 1000 ms 23228 KB Output is correct
10 Correct 284 ms 22480 KB Output is correct
11 Correct 874 ms 22660 KB Output is correct
12 Correct 61 ms 18216 KB Output is correct
13 Correct 1917 ms 26192 KB Output is correct
14 Correct 1868 ms 25256 KB Output is correct
15 Correct 1832 ms 22756 KB Output is correct
16 Correct 1069 ms 22720 KB Output is correct
17 Correct 326 ms 22772 KB Output is correct
18 Correct 127 ms 18652 KB Output is correct
19 Correct 1928 ms 26192 KB Output is correct
20 Correct 2012 ms 25504 KB Output is correct
21 Correct 1382 ms 26196 KB Output is correct
22 Correct 299 ms 22480 KB Output is correct
23 Correct 924 ms 22572 KB Output is correct
24 Correct 64 ms 18216 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11212 KB Output is correct
2 Correct 7 ms 11220 KB Output is correct
3 Correct 6 ms 11184 KB Output is correct
4 Correct 6 ms 11212 KB Output is correct
5 Correct 6 ms 11248 KB Output is correct
6 Correct 8 ms 11228 KB Output is correct
7 Correct 36 ms 12228 KB Output is correct
8 Correct 32 ms 12148 KB Output is correct
9 Correct 32 ms 12156 KB Output is correct
10 Correct 31 ms 12064 KB Output is correct
11 Correct 15 ms 12068 KB Output is correct
12 Correct 10 ms 11596 KB Output is correct
13 Correct 36 ms 12180 KB Output is correct
14 Correct 37 ms 12172 KB Output is correct
15 Correct 29 ms 12164 KB Output is correct
16 Correct 13 ms 11976 KB Output is correct
17 Correct 26 ms 12052 KB Output is correct
18 Correct 10 ms 11664 KB Output is correct
19 Correct 2321 ms 22756 KB Output is correct
20 Correct 2256 ms 22748 KB Output is correct
21 Correct 2091 ms 22748 KB Output is correct
22 Correct 1035 ms 22716 KB Output is correct
23 Correct 425 ms 22728 KB Output is correct
24 Correct 132 ms 18616 KB Output is correct
25 Correct 843 ms 22752 KB Output is correct
26 Correct 1039 ms 22748 KB Output is correct
27 Correct 1000 ms 23228 KB Output is correct
28 Correct 284 ms 22480 KB Output is correct
29 Correct 874 ms 22660 KB Output is correct
30 Correct 61 ms 18216 KB Output is correct
31 Correct 1917 ms 26192 KB Output is correct
32 Correct 1868 ms 25256 KB Output is correct
33 Correct 1832 ms 22756 KB Output is correct
34 Correct 1069 ms 22720 KB Output is correct
35 Correct 326 ms 22772 KB Output is correct
36 Correct 127 ms 18652 KB Output is correct
37 Correct 1928 ms 26192 KB Output is correct
38 Correct 2012 ms 25504 KB Output is correct
39 Correct 1382 ms 26196 KB Output is correct
40 Correct 299 ms 22480 KB Output is correct
41 Correct 924 ms 22572 KB Output is correct
42 Correct 64 ms 18216 KB Output is correct
43 Execution timed out 3064 ms 37992 KB Time limit exceeded
44 Halted 0 ms 0 KB -