oj.uz

답안 #161295

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
161295 2019-11-01T18:24:23 Z pink_bittern Segments (IZhO18_segments) C++14
15 / 100
 1180 ms 8340 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 = (maxn + 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];
	used[b.i] = 1;
	if (il == -1 || used[b.i]) {
		return;
	}
	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

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 9 ms 504 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 993 ms 5452 KB Output is correct
2 Correct 1006 ms 5184 KB Output is correct
3 Correct 985 ms 5200 KB Output is correct
4 Correct 939 ms 5504 KB Output is correct
5 Correct 240 ms 8132 KB Output is correct
6 Correct 169 ms 8340 KB Output is correct
7 Correct 1046 ms 5272 KB Output is correct
8 Correct 996 ms 5300 KB Output is correct
9 Correct 997 ms 5208 KB Output is correct
10 Correct 1161 ms 3128 KB Output is correct
11 Correct 1180 ms 3660 KB Output is correct
12 Correct 713 ms 6700 KB Output is correct

Subtask #3
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 275 ms 3068 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 271 ms 3108 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 9 ms 504 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 9 ms 504 KB Output isn't correct
4 Halted 0 ms 0 KB -