oj.uz

답안 #100920

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
100920 2019-03-15T07:28:00 Z cki86201 Golf (JOI17_golf) C++11
30 / 100
 4801 ms 1048580 KB 
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include <math.h>
#include <assert.h>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <string>
#include <algorithm>
#include <iostream>
#include <functional>
#include <unordered_set>
#include <bitset>
#include <time.h>
#include <limits.h>

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define Fi first
#define Se second
#define pb(x) push_back(x)
#define szz(x) (int)x.size()
#define rep(i,n) for(int i=0;i<n;i++)
#define all(x) x.begin(),x.end()
typedef tuple<int, int, int> t3;

struct rect {
	rect(){}
	rect(int x1, int x2, int y1, int y2):x1(x1), y1(y1), x2(x2), y2(y2){}
	int x1, x2, y1, y2;
};
struct seg {
	seg(){}
	seg(int x1, int x2, int y, int c) : x1(x1), x2(x2), y(y), c(c) {}
	int x1, x2, y, c;
	bool operator<(const seg &rhs)const {
		if(y != rhs.y) return y < rhs.y;
		return c < rhs.c;
	}
};
pii LR[400040];

vector <seg> V;
vector <int> vx, vy;
rect P[100010];
int N, cs, LX;
int T[1<<19];

void update_t2(int rt, int l, int r, int s, int e, int val) {
	if(s <= l && r <= e) {
		T[rt] = val; return;
	}
	if(T[rt]) {
		T[rt<<1] = T[rt];
		T[rt<<1|1] = T[rt];
		T[rt] = 0;
	}
	int m = (l + r) >> 1;
	if(s <= m) update_t2(rt<<1, l, m, s, e, val);
	if(m < e) update_t2(rt<<1|1, m+1, r, s, e, val);
}
int read_t2(int rt, int l, int r, int x) {
	if(l == r) return T[rt];
	if(T[rt] != 0) return T[rt];
	int m = (l + r) >> 1;
	if(x <= m) return read_t2(rt<<1, l, m, x);
	else return read_t2(rt<<1|1, m+1, r, x);
}

void update_t(int l, int r, int val) {
	if(l <= r) update_t2(1, 0, LX, l, r, val);
}

int read_t(int x) {
	return read_t2(1, 0, LX, x);
}

void flip_xy() {
	swap(vx, vy); for(int i=1;i<=N;i++) swap(P[i].x1, P[i].y1), swap(P[i].x2, P[i].y2);
}
void get_line(int cmd) {
	for(int i=1;i<=N;i++) {
		V.pb(seg(P[i].x1+1, P[i].x2-1, P[i].y2, 1));
		V.pb(seg(P[i].x1, 4*i+cmd, P[i].y1, -1));
		V.pb(seg(P[i].x2, 4*i+1+cmd, P[i].y1, -1));
	}
	sort(all(V));
	for(auto &s : V) {
		if(s.c < 0) {
			LR[s.x2].Fi = read_t(s.x1);
		}
		else {
			update_t(s.x1, s.x2, s.y);
		}
	}
	memset(T, 0, sizeof T); V.clear();
	
	for(int i=1;i<=N;i++) {
		V.pb(seg(P[i].x1+1, P[i].x2-1, -P[i].y1, 1));
		V.pb(seg(P[i].x1, 4*i+cmd, -P[i].y2, -1));
		V.pb(seg(P[i].x2, 4*i+1+cmd, -P[i].y2, -1));
	}
	sort(all(V));
	for(auto &s : V) {
		if(s.c < 0) {
			int v = -read_t(s.x1);
			if(v == 0) v = LX;
			LR[s.x2].Se = v;
		}
		else {
			update_t(s.x1, s.x2, s.y);
		}
	}
	memset(T, 0, sizeof T); V.clear();
}

int dis[400040];
struct node {
	node(){link[0] = link[1] = 0;}
	node* link[2];
	vector <int> v;
	void update(int l, int r, int s, int e, int x) {
		if(s <= l && r <= e) {
			v.pb(x);
			return;
		}
		int m = (l + r) >> 1;
		if(s <= m) {
			if(!link[0]) link[0] = new node();
			link[0]->update(l, m, s, e, x);
		}
		if(m < e) {
			if(!link[1]) link[1] = new node();
			link[1]->update(m+1, r, s, e, x);
		}
	}
	int read(int l, int r, int x) {
		while(szz(v)) {
			int a = v.back(); v.pop_back();
			if(dis[a] == -1) return a;
		}
		if(l == r) return -1;
		int m = (l + r) >> 1;
		if(x <= m) return link[0]?link[0]->read(l, m, x):-1;
		else return link[1]?link[1]->read(m+1, r, x):-1;
	}
};

const int JJ = 40;
int CH[2][1<<19];
vector <t3> lg[2][1<<19];
node H[2][1<<19]; const int ADD = 1<<18;
void update(int a, int x, int y1, int y2, int idx) {
	x += ADD;
	while(x) CH[a][x]++, x >>= 1;
}
void update2(int a, int x, int y1, int y2, int idx) {
	x += ADD;
	while(x) {
		if(CH[a][x] > JJ) H[a][x].update(0, LX, y1, y2, idx);
		else lg[a][x].pb(t3(y1, y2, idx));
		x >>= 1;
	}
}
int get_idx(int a, int rt, int y) {
	if(CH[a][rt] > JJ) return H[a][rt].read(0, LX, y);
	else {
		rep(i, szz(lg[a][rt])) {
			int y1, y2, idx;
			tie(y1, y2, idx) = lg[a][rt][i];
			if(dis[idx] != -1) {
				swap(lg[a][rt][i], lg[a][rt].back());
				lg[a][rt].pop_back();
				--i; continue;
			}
			if(y1 <= y && y <= y2) {
				swap(lg[a][rt][i], lg[a][rt].back());
				lg[a][rt].pop_back();
				return idx;
			}
		}
		return -1;
	}
}

int read(int a, int l, int r, int y) {
	l += ADD, r += ADD;
	while(l <= r) {
		if(l & 1) {
			int v = get_idx(a, l++, y);
			if(v != -1) return v;
		}
		if(!(r & 1)) {
			int v = get_idx(a, r--, y);
			if(v != -1) return v;
		}
		l >>= 1, r >>= 1;
	}
	return -1;
}

int pp[400040]; int Find(int x) { return pp[x] == x ? x : pp[x] = Find(pp[x]); }
int main() {
	int ss, tt, uu, vv; scanf("%d%d%d%d", &ss, &tt, &uu, &vv);
	scanf("%d", &N);
	P[1] = rect(ss, ss, tt, tt);
	P[2] = rect(uu, uu, vv, vv);
	for(int i=3;i<=N+2;i++) {
		int x1, x2, y1, y2;
		scanf("%d%d%d%d", &x1, &x2, &y1, &y2);
		P[i] = rect(x1, x2, y1, y2);
	}
	N += 2;
	for(int i=1;i<=N;i++) {
		vx.pb(P[i].x1); vx.pb(P[i].x2);
		vy.pb(P[i].y1); vy.pb(P[i].y2);
	}
	sort(all(vx)); vx.resize(unique(all(vx)) - vx.begin());
	sort(all(vy)); vy.resize(unique(all(vy)) - vy.begin());
	for(int i=1;i<=N;i++) {
		P[i].x1 = (int)(lower_bound(all(vx), P[i].x1) - vx.begin() + 1);
		P[i].x2 = (int)(lower_bound(all(vx), P[i].x2) - vx.begin() + 1);
		P[i].y1 = (int)(lower_bound(all(vy), P[i].y1) - vy.begin() + 1);
		P[i].y2 = (int)(lower_bound(all(vy), P[i].y2) - vy.begin() + 1);
	}
	LX = max(szz(vx), szz(vy)) + 1;
	
	get_line(0);
	flip_xy();
	get_line(2);
	flip_xy();
	
	/*
	 for(int i=1;i<=N;i++) {
		for(int a=0;a<4;a++) {
	 printf("%d %d\n", LR[4*i+a].Fi, LR[4*i+a].Se);
		}
	 }
	 */
	
	map <t3, int> Mx[2];
	rep(i, 4*N+5) pp[i] = i;
	for(int i=1;i<=N;i++) {
		rep(a, 4) {
			pii p = LR[4*i+a];
			t3 t;
			if(a == 0) t = t3(P[i].x1, p.Fi, p.Se);
			else if(a == 1) t = t3(P[i].x2, p.Fi, p.Se);
			else if(a == 2) t = t3(P[i].y1, p.Fi, p.Se);
			else t = t3(P[i].y2, p.Fi, p.Se);
			int ta = !!(a & 2);
			if(Mx[ta].find(t) == Mx[ta].end()) Mx[ta][t] = 4*i+a;
			else pp[Find(4*i+a)] = Find(Mx[ta][t]);
		}
	}
	
	for(int i=4;i<4*N+4;i++) if(pp[i] == i) {
		if(i&2) {
			int x = (i%4==2 ? P[i/4].y1 : P[i/4].y2);
			update(1, x, LR[i].Fi, LR[i].Se, i);
		}
		else {
			int x = (i%4==0 ? P[i/4].x1 : P[i/4].x2);
			update(0, x, LR[i].Fi, LR[i].Se, i);
		}
	}
	
	for(int i=4;i<4*N+4;i++) if(pp[i] == i) {
		if(i&2) {
			int x = (i%4==2 ? P[i/4].y1 : P[i/4].y2);
			update2(1, x, LR[i].Fi, LR[i].Se, i);
		}
		else {
			int x = (i%4==0 ? P[i/4].x1 : P[i/4].x2);
			update2(0, x, LR[i].Fi, LR[i].Se, i);
		}
	}
	
	memset(dis, -1, sizeof dis);
	vector <int> q;
	for(int i=4;i<=7;i++) {
		int pi = Find(i);
		if(dis[pi] == -1) {
			dis[pi] = 1; q.pb(pi);
		}
	}
	
	rep(i, szz(q)) {
		int t = q[i];
		while(1) {
			int v = -1;
			if(t&2) {
				int x = (t%4==2 ? P[t/4].y1 : P[t/4].y2);
				v = read(0, LR[t].Fi, LR[t].Se, x);
			}
			else {
				int x = (t%4==0 ? P[t/4].x1 : P[t/4].x2);
				v = read(1, LR[t].Fi, LR[t].Se, x);
			}
			if(v == -1) break;
			q.pb(v); dis[v] = dis[t] + 1;
		}
	}
	int ans = 1e9;
	for(int i=8;i<12;i++) {
		int pi = Find(i);
		if(dis[pi] != -1) ans = min(ans, dis[pi]);
	}
	printf("%d\n", ans);
	
	return 0;
}

Compilation message

golf.cpp: In constructor 'rect::rect(int, int, int, int)':
golf.cpp:35:14: warning: 'rect::y1' will be initialized after [-Wreorder]
  int x1, x2, y1, y2;
              ^~
golf.cpp:35:10: warning:   'int rect::x2' [-Wreorder]
  int x1, x2, y1, y2;
          ^~
golf.cpp:34:2: warning:   when initialized here [-Wreorder]
  rect(int x1, int x2, int y1, int y2):x1(x1), y1(y1), x2(x2), y2(y2){}
  ^~~~
golf.cpp: In function 'int main()':
golf.cpp:209:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  int ss, tt, uu, vv; scanf("%d%d%d%d", &ss, &tt, &uu, &vv);
                      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
golf.cpp:210:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
golf.cpp:215:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d", &x1, &x2, &y1, &y2);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 69752 KB Output is correct
2 Correct 52 ms 69752 KB Output is correct
3 Correct 49 ms 69752 KB Output is correct
4 Correct 63 ms 70312 KB Output is correct
5 Correct 111 ms 75384 KB Output is correct
6 Correct 90 ms 75384 KB Output is correct
7 Correct 73 ms 75048 KB Output is correct
8 Correct 77 ms 75512 KB Output is correct
9 Correct 81 ms 75328 KB Output is correct
10 Correct 84 ms 75616 KB Output is correct
11 Correct 85 ms 75648 KB Output is correct
12 Correct 80 ms 75360 KB Output is correct
13 Correct 82 ms 75384 KB Output is correct
14 Correct 91 ms 75640 KB Output is correct
15 Correct 63 ms 71288 KB Output is correct
16 Correct 67 ms 72824 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 69752 KB Output is correct
2 Correct 52 ms 69752 KB Output is correct
3 Correct 49 ms 69752 KB Output is correct
4 Correct 63 ms 70312 KB Output is correct
5 Correct 111 ms 75384 KB Output is correct
6 Correct 90 ms 75384 KB Output is correct
7 Correct 73 ms 75048 KB Output is correct
8 Correct 77 ms 75512 KB Output is correct
9 Correct 81 ms 75328 KB Output is correct
10 Correct 84 ms 75616 KB Output is correct
11 Correct 85 ms 75648 KB Output is correct
12 Correct 80 ms 75360 KB Output is correct
13 Correct 82 ms 75384 KB Output is correct
14 Correct 91 ms 75640 KB Output is correct
15 Correct 63 ms 71288 KB Output is correct
16 Correct 67 ms 72824 KB Output is correct
17 Correct 94 ms 78200 KB Output is correct
18 Correct 98 ms 78140 KB Output is correct
19 Correct 98 ms 78072 KB Output is correct
20 Correct 98 ms 78200 KB Output is correct
21 Correct 97 ms 78432 KB Output is correct
22 Correct 98 ms 78200 KB Output is correct
23 Correct 104 ms 78200 KB Output is correct
24 Correct 102 ms 78200 KB Output is correct
25 Correct 85 ms 78072 KB Output is correct
26 Correct 84 ms 78204 KB Output is correct
27 Correct 53 ms 71416 KB Output is correct
28 Correct 63 ms 73080 KB Output is correct
29 Correct 61 ms 73076 KB Output is correct

Subtask #3
0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 49 ms 69752 KB Output is correct
2 Correct 52 ms 69752 KB Output is correct
3 Correct 49 ms 69752 KB Output is correct
4 Correct 63 ms 70312 KB Output is correct
5 Correct 111 ms 75384 KB Output is correct
6 Correct 90 ms 75384 KB Output is correct
7 Correct 73 ms 75048 KB Output is correct
8 Correct 77 ms 75512 KB Output is correct
9 Correct 81 ms 75328 KB Output is correct
10 Correct 84 ms 75616 KB Output is correct
11 Correct 85 ms 75648 KB Output is correct
12 Correct 80 ms 75360 KB Output is correct
13 Correct 82 ms 75384 KB Output is correct
14 Correct 91 ms 75640 KB Output is correct
15 Correct 63 ms 71288 KB Output is correct
16 Correct 67 ms 72824 KB Output is correct
17 Correct 94 ms 78200 KB Output is correct
18 Correct 98 ms 78140 KB Output is correct
19 Correct 98 ms 78072 KB Output is correct
20 Correct 98 ms 78200 KB Output is correct
21 Correct 97 ms 78432 KB Output is correct
22 Correct 98 ms 78200 KB Output is correct
23 Correct 104 ms 78200 KB Output is correct
24 Correct 102 ms 78200 KB Output is correct
25 Correct 85 ms 78072 KB Output is correct
26 Correct 84 ms 78204 KB Output is correct
27 Correct 53 ms 71416 KB Output is correct
28 Correct 63 ms 73080 KB Output is correct
29 Correct 61 ms 73076 KB Output is correct
30 Runtime error 4801 ms 1048580 KB Execution killed with signal 9 (could be triggered by violating memory limits)
31 Halted 0 ms 0 KB -