oj.uz

Submission #161296

# Submission time Handle Problem Language Result Execution time Memory
161296 2019-11-01T18:25:03 Z pink_bittern Segments (IZhO18_segments) C++14
15 / 100
 1711 ms 7048 KB 
#include <bits/stdc++.h>
#define pb push_back
#define pll pair <ll, ll>
#define MOMI using namespace std;
#define mp make_pair
#define pyshnapyshnakaa ios_base :: sync_with_stdio(0); cin.tie(0); cout.tie(0);
#pragma optimize("TKACHENKO-GORYACHENKO")
// #pragma GCC optimize("O3")
// #pragma GCC optimize("Ofast")
// #pragma GCC optimize("unroll-loops")
 
typedef int ll;
 
typedef long double ld;
 
using namespace std;
 
const ll inf = 2e9 + 500;
const ll maxn = 2e5 + 100;
const ll block = 150;
const ll block_sz = (3e5 + 100 + block - 1) / block + 10;
 
ll n, m, k, t;
 
struct seg{
	ll l;
	ll r;
	inline ll sz() const {
		return r - l + 1;
	}
	ll i;
};
 
inline bool operator==(seg a, seg b) {
	return a.i == b.i;
}
 
vector <seg> S;
 
struct R {
	bool operator()(seg a, seg b) const {
		if (a.r == b.r) {
			return a.i < b.i;
		}
		return a.r < b.r; 
	}
};
 
struct L {
	bool operator()(seg a, seg b) const {
		if (a.l == b.l) {
			return a.i < b.i;
		}
		return a.l < b.l;
	}
};
 
vector <seg> lasts;
 
inline bool cmp(seg a, seg b) {
	return (a.r - a.l) < (b.r - b.l);
}
 
inline bool cmpl(const seg& a, const seg& b) {
	return a.l < b.l;
}
 
inline bool cmpr(const seg& a, const seg& b) {
	return a.r < b.r;
}
 
inline bool cmpsz(const seg& a, const seg& b) {
	return a.sz() < b.sz();
}
 
vector <seg> segs;
 
vector <seg> R[block];
 
vector <seg> L[block];
 
ll MNL[block];
ll MXL[block];
ll MNR[block];
ll MXR[block];
 
ll IL[maxn];
ll IR[maxn];
 
bool used[maxn];
 
inline void buildL(ll q) {
	ll w;
	if (q > block) {
		exit(-1);
	}
	sort(L[q].begin(), L[q].end(), cmpsz);
	MNL[q] = inf;
	MXL[q] = -inf;
	for (w = 0; w < L[q].size(); w++) {
		MNL[q] = min(MNL[q], L[q][w].l);
		MXL[q] = max(MXL[q], L[q][w].l);
	}
}
 
inline void buildR(ll q) {
	ll w;
	if (q > block) {
		exit(-1);
	}
 	MNR[q] = inf;
	MXR[q] = -inf;
	sort(R[q].begin(), R[q].end(), cmpsz);
	for (w = 0; w < R[q].size(); w++) {
		MNR[q] = min(MNR[q], R[q][w].r);
		MXR[q] = max(MXR[q], R[q][w].r);
	}
}
 
inline void rebuild() { 
	ll q, w;
	lasts.clear();
	ll blocki = 0;
	for (q = 0; q < block; q++) {
		R[q].clear();
		L[q].clear();
	}
	sort(segs.begin(), segs.end(), cmpl);
	for (auto p : segs) {
		if (used[p.i]) {
			continue;
		}
		if (L[blocki].size() > block_sz) {
			blocki++;
		}
		IL[p.i] = blocki;
		L[blocki].pb(p);
	}
	sort(segs.begin(), segs.end(), cmpr);
	for (auto p: segs) {
		if (used[p.i]) {
			continue;
		}
		if (R[blocki].size() > block_sz) {
			blocki++;
		}
		IR[p.i] = blocki;
		R[blocki].pb(p);
	}
	for (q = 0; q < block; q++) {
		buildL(q);
	}
	for (q = 0; q < block; q++) {
		buildR(q);
	}
}
 
inline void add(seg a) {
	lasts.pb(a);
	S.pb(a);
	segs.push_back(a);
	IL[a.i] = IR[a.i] = -1;
}
 
inline void del(seg b) { 
	ll il = IL[b.i], ir = IR[b.i];
	if (il == -1 || used[b.i]) {
		return;
	}
	used[b.i] = 1;
	L[il].erase(find(L[il].begin(), L[il].end(), b));
	R[ir].erase(find(R[ir].begin(), R[ir].end(), b));
	buildL(il);
	buildR(ir);
}
 
inline ll slowL(ll i, ll x, ll l) {
	ll q;
	ll ans = 0;
	for (q = 0; q < L[i].size(); q++) {
		if (L[i][q].l >= l && L[i][q].sz() >= x) {
			ans++;
		}
	}
	return ans;
}
 
inline ll slowR(ll i, ll x, ll r) {
	ll q;
	ll ans = 0;
	for (q = 0; q < R[i].size(); q++) {
		if (R[i][q].r <= r && R[i][q].sz() >= x) {
			ans++;
		}
	}
	return ans;
}
 
inline ll fastL(ll i, ll x) {
	if (L[i].empty()) {
		return 0;
	}
	seg good;
	good.l = 0; good.r = x - 1; 
	ll j = (lower_bound(L[i].begin(), L[i].end(), good, cmpsz) - L[i].begin());
	return L[i].size() - j;
}
 
inline ll fastR(ll i, ll x) {
	if (R[i].empty()) {
		return 0;
	}
	seg good;
	good.l = 0; good.r = x - 1;
	ll j = (lower_bound(R[i].begin(), R[i].end(), good, cmpsz) - R[i].begin());
	return R[i].size() - j;
}
 
inline ll getansL(ll x, ll l) {
	ll q;
	ll ans = 0;
	for (q = 0; q < block; q++) {
		if (MNL[q] == inf) {
			continue;
		}
		if (MNL[q] >= l) {
			ans += fastL(q, x);
			continue;
		}
		if (MXL[q] < l) {
			continue;
		}
		if (MNL[q] < l) {
			ans += slowL(q, x, l);
		}
	}
 
	for (q = 0; q < lasts.size(); q++) {
		if (used[lasts[q].i]) {
			continue;
		}
		if (lasts[q].l >= l && lasts[q].sz() >= x) {
			ans++;
		}
	}
	return ans;
}
 
inline ll getansR(ll x, ll r) {
	ll q;
	ll ans = 0;
	ll cnt = 0;
	for (q = 0; q < block; q++) {
		if (MNR[q] == inf) {
			continue;
		}
		// if (q > 1) {
		// 	if (MXR[q - 1] > MNR[q]) {
		// 		exit(-1);
		// 	}
		// }
		if (MXR[q] <= r) {
			ll dans = fastR(q, x);
			ans += dans;
			continue;
		}
		if (MNR[q] > r) {
			continue;
		}
		/// MXR[q] > r && MNR[q] <= r, 
		ll dans = slowR(q, x, r);
		ans += dans;
		cnt++;
	}
	// if (cnt > 5) {
	// 	exit(-1);
	// }
	for (q = 0; q < lasts.size(); q++) {
		if (used[lasts[q].i]) {
			continue;
		}
		if (lasts[q].r <= r && lasts[q].sz() >= x) {
			ans++;
		}
	}
	return ans;
}
 
inline ll answer(seg c, ll k) {
	if (c.sz() < k) {
		return 0;
	}
	ll q, w;
	ll ans = 0;
	ll lk = c.r - k + 2, rk = c.l + k - 2;
	ll allans = getansR(k, inf);
	ll dansl = getansL(k, lk);
	ll dansr = getansR(k, rk);
	ans = allans - dansr - dansl;
	return ans;
}
 
signed main() {
	ll q, w, e, a, b, c;
	pyshnapyshnakaa;
	cin >> n >> t;
	// cout << block_sz * block << endl;
	ll nxt = 0;
	ll lastans = 0;
	ll cnt3 = 0;
	for (q = 0; q < n; q++) {
		ll comm;
		cin >> comm;
		ll l, r;
		seg x;
		if (comm == 1) {
			cin >> l >> r;
			l ^= (lastans * t);
			r ^= (lastans * t);
			if (l > r) {
				swap(l, r);
			}
			x.l = l; x.r = r;
			x.i = S.size();
			add(x);
		}
		if (comm == 2) {
			cin >> a;
			a--;
			del(S[a]);
		}
		// if (cnt3 > 8e4 && n > 1e5) {
		// 	exit(-1);
		// }
		if (comm == 3) {
			cnt3++;
			cin >> l >> r;
			l ^= (lastans * t);
			r ^= (lastans * t);
			if (lasts.size() >= block_sz) {
				rebuild();
			}
			if (l > r) {
				swap(l, r);
			} 
			x.l = l; x.r = r;
			cin >> c;
			lastans = answer(x, c);
			cout << lastans << '\n';
		}
	}
	return 0;
}

Compilation message

segments.cpp:7:0: warning: ignoring #pragma optimize  [-Wunknown-pragmas]
 #pragma optimize("TKACHENKO-GORYACHENKO")
 
segments.cpp: In function 'void buildL(ll)':
segments.cpp:100:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (w = 0; w < L[q].size(); w++) {
              ~~^~~~~~~~~~~~~
segments.cpp: In function 'void buildR(ll)':
segments.cpp:114:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (w = 0; w < R[q].size(); w++) {
              ~~^~~~~~~~~~~~~
segments.cpp: In function 'void rebuild()':
segments.cpp:121:8: warning: unused variable 'w' [-Wunused-variable]
  ll q, w;
        ^
segments.cpp: In function 'll slowL(ll, ll, ll)':
segments.cpp:180:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (q = 0; q < L[i].size(); q++) {
              ~~^~~~~~~~~~~~~
segments.cpp: In function 'll slowR(ll, ll, ll)':
segments.cpp:191:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (q = 0; q < R[i].size(); q++) {
              ~~^~~~~~~~~~~~~
segments.cpp: In function 'll getansL(ll, ll)':
segments.cpp:238:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (q = 0; q < lasts.size(); q++) {
              ~~^~~~~~~~~~~~~~
segments.cpp: In function 'll getansR(ll, ll)':
segments.cpp:278:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (q = 0; q < lasts.size(); q++) {
              ~~^~~~~~~~~~~~~~
segments.cpp: In function 'll answer(seg, ll)':
segments.cpp:293:5: warning: unused variable 'q' [-Wunused-variable]
  ll q, w;
     ^
segments.cpp:293:8: warning: unused variable 'w' [-Wunused-variable]
  ll q, w;
        ^
segments.cpp: In function 'int main()':
segments.cpp:304:8: warning: unused variable 'w' [-Wunused-variable]
  ll q, w, e, a, b, c;
        ^
segments.cpp:304:11: warning: unused variable 'e' [-Wunused-variable]
  ll q, w, e, a, b, c;
           ^
segments.cpp:304:17: warning: unused variable 'b' [-Wunused-variable]
  ll q, w, e, a, b, c;
                 ^
segments.cpp:308:5: warning: unused variable 'nxt' [-Wunused-variable]
  ll nxt = 0;
     ^~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1148 ms 4620 KB Output is correct
2 Correct 1133 ms 4312 KB Output is correct
3 Correct 1157 ms 4256 KB Output is correct
4 Correct 1102 ms 4480 KB Output is correct
5 Correct 241 ms 6900 KB Output is correct
6 Correct 167 ms 7048 KB Output is correct
7 Correct 1200 ms 4188 KB Output is correct
8 Correct 1139 ms 4232 KB Output is correct
9 Correct 1161 ms 4316 KB Output is correct
10 Correct 1511 ms 2364 KB Output is correct
11 Correct 1711 ms 2764 KB Output is correct
12 Correct 792 ms 5484 KB Output is correct

Subtask #3
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 1056 ms 3424 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 1112 ms 3368 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -