답안 #925891

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
925891	2024-02-12T10:25:30 Z	vjudge1	Joker (BOI20_joker)	C++17	36 / 100	1726 ms	15572 KB

Joker

//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")

#include<bits/stdc++.h>	

using namespace std;

#define all(a) a.begin(), a.end()                                                   
#define rall(a) a.rbegin(), a.rend()                 
#define sz(a) (int)a.size()
#define s second
#define f first
 
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
     
vector<pii> rid = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
vector<pii> dir = {{-1, -1}, {-1, 1}, {1, -1}, {1, 1}};
 
const int N = 4e5 + 1, mod = 998244353;

const ll inf = 1e9;
 
double eps = 1e-15;
                                                
bool flg = 0;

const int k = 1000;

bool ok = 1, was[N];
vector<pii> g(N);

int p[N + 1], pr[N];
int sz[N + 1], pt[N + 1];
vector<array<int, 2>> h;

pii get(int x) {
 	if (p[x] == x) return {x, 0};
 	pii val = get(p[x]);
 	return {val.f, (pr[x] + val.s) % 2};
}

void add(int id) {
	int u = g[id].f;
	int v = g[id].s;
	pii x = get(u);
	pii y = get(v);
	if (x.f == y.f) {
		if (x.s == y.s) {
			if (ok) {
			    h.push_back({-1, -1});
				ok = 0;
			}    
		}
		return;
	}
	if (sz[x.f] > sz[y.f]) swap(x, y);
	h.push_back({x.f, sz[x.f]});
	h.push_back({y.f, sz[y.f]});
	p[x.f] = y.f;
	pr[x.f] = (x.s + y.s + 1) % 2;  	
	sz[y.f] += sz[x.f];
}

void rb() {
	while (sz(h) && !pt[sz(h)]) {
		array<int, 2> x = h.back();
		h.pop_back();
		if (x[0] == -1) {
			ok = 1;
			continue;
		}
		p[x[0]] = x[0];
		pr[x[0]] = 0;
		sz[x[0]] = x[1];
	}
	pt[sz(h)] = 0; 
}

bool slave(int l, int r) {
	for (int i = l; i <= r; i++) add(i);
	bool vv = ok;
	rb();
	return vv;	
}

bool cmp(array<int, 3> a, array<int, 3> b) {
	if (a[0] / k < b[0] / k) return 1;
	if (a[0] / k == b[0] / k && a[1] < b[1]) return 1;
	return 0;
}

void slv() {
	int n, m, q;
	cin >> n >> m >> q;
	for (int i = 1; i <= m; i++) {
		int u, v;
		cin >> u >> v;
		g[i] = g[i + m] = {u, v};
	}
	for (int i = 1; i <= n; i++) 
		p[i] = i, sz[i] = 1;
	if (q > 2000) {
		vector<pii> qr;
		bool ans[q + 1];
		for (int i = 1; i <= q; i++) {
			int l, r;
			cin >> l >> r;
			qr.push_back({r, i});
		}
		sort(all(qr));
		int p = 0;
		for (auto [r, id]: qr) {
			while (p < r) 
				add(++p);
		   	ans[id] = ok;
		}
		for (int i = 1; i <= q; i++) {
			if (ans[i]) cout << "NO\n";
			else cout << "YES\n";
		}
		return;
	}
	vector<array<int, 3>> qr;
	bool ans[q + 1];
	for (int i = 1; i <= q; i++) {
		int l, r;
		cin >> l >> r;
		int tl = r + 1, tr = l + m - 1;
		if (tl / k == tr / k) 
			ans[i] = slave(tl, tr);
		else qr.push_back({tl, tr, i});
	}
	sort(all(qr), cmp);
	int tr = 0, lst = -1, pos;
	for (auto [l, r, id]: qr) {
		if (l / k != lst) {
			rb();
			lst = l / k;
			pos = (lst + 1) * k - 1;
			tr = pos;
		}
		while (tr < r) 
			add(++tr);
		pt[sz(h)] = 1;
		for (int i = pos; i >= l; i--) 
			add(i);
		ans[id] = ok;
		rb();
		
	}
	for (int i = 1; i <= q; i++) {
		if (ans[i]) cout << "NO\n";
		else cout << "YES\n";
	}
}                                                                           
 
main() {
	//freopen("rsq.in", "r", stdin);                                                                                     
	//freopen("rsq.out", "w", stdout);                                                                                     
	ios_base::sync_with_stdio(0);	                                                                                       
	cin.tie(0);
	int tp = 1;
	if (flg) cin >> tp;
	while (tp--) {  	
		slv();
	}
}
//wenomechainsama

Compilation message

Joker.cpp:161:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  161 | main() {
      | ^~~~
Joker.cpp: In function 'void slv()':
Joker.cpp:149:3: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
  149 |   for (int i = pos; i >= l; i--)
      |   ^~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9564 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	3 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	3 ms	9564 KB	Output is correct
11	Correct	3 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9564 KB	Output is correct
14	Correct	3 ms	9532 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9560 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	3 ms	9564 KB	Output is correct
20	Correct	3 ms	9564 KB	Output is correct
21	Correct	3 ms	9564 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	3 ms	9564 KB	Output is correct
26	Correct	2 ms	9560 KB	Output is correct
27	Correct	2 ms	9560 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9564 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	3 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	3 ms	9564 KB	Output is correct
11	Correct	3 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9564 KB	Output is correct
14	Correct	3 ms	9532 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9560 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	3 ms	9564 KB	Output is correct
20	Correct	3 ms	9564 KB	Output is correct
21	Correct	3 ms	9564 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	3 ms	9564 KB	Output is correct
26	Correct	2 ms	9560 KB	Output is correct
27	Correct	2 ms	9560 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	20 ms	9816 KB	Output is correct
30	Correct	19 ms	9820 KB	Output is correct
31	Correct	27 ms	9820 KB	Output is correct
32	Correct	25 ms	9820 KB	Output is correct
33	Correct	21 ms	9820 KB	Output is correct
34	Correct	14 ms	9820 KB	Output is correct
35	Correct	29 ms	9820 KB	Output is correct
36	Correct	5 ms	9816 KB	Output is correct
37	Correct	30 ms	9888 KB	Output is correct
38	Correct	20 ms	9872 KB	Output is correct
39	Correct	18 ms	9820 KB	Output is correct
40	Correct	6 ms	10076 KB	Output is correct
41	Correct	6 ms	9820 KB	Output is correct
42	Correct	6 ms	9840 KB	Output is correct
43	Correct	12 ms	9820 KB	Output is correct
44	Correct	13 ms	9820 KB	Output is correct
45	Correct	16 ms	9816 KB	Output is correct
46	Correct	18 ms	9820 KB	Output is correct
47	Correct	17 ms	9820 KB	Output is correct
48	Correct	21 ms	9816 KB	Output is correct
49	Correct	25 ms	9820 KB	Output is correct
50	Correct	25 ms	9820 KB	Output is correct
51	Correct	22 ms	9820 KB	Output is correct
52	Correct	23 ms	9820 KB	Output is correct
53	Correct	25 ms	9820 KB	Output is correct
54	Correct	28 ms	9876 KB	Output is correct

Subtask #3
0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Incorrect	69 ms	14476 KB	Output isn't correct
4	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9564 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	3 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	3 ms	9564 KB	Output is correct
11	Correct	3 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9564 KB	Output is correct
14	Correct	3 ms	9532 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9560 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	3 ms	9564 KB	Output is correct
20	Correct	3 ms	9564 KB	Output is correct
21	Correct	3 ms	9564 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	3 ms	9564 KB	Output is correct
26	Correct	2 ms	9560 KB	Output is correct
27	Correct	2 ms	9560 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Incorrect	69 ms	14476 KB	Output isn't correct
30	Halted	0 ms	0 KB	-

Subtask #5
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9564 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	3 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	3 ms	9564 KB	Output is correct
11	Correct	3 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9564 KB	Output is correct
14	Correct	3 ms	9532 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9560 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	3 ms	9564 KB	Output is correct
20	Correct	3 ms	9564 KB	Output is correct
21	Correct	3 ms	9564 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	3 ms	9564 KB	Output is correct
26	Correct	2 ms	9560 KB	Output is correct
27	Correct	2 ms	9560 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	20 ms	9816 KB	Output is correct
30	Correct	19 ms	9820 KB	Output is correct
31	Correct	27 ms	9820 KB	Output is correct
32	Correct	25 ms	9820 KB	Output is correct
33	Correct	21 ms	9820 KB	Output is correct
34	Correct	14 ms	9820 KB	Output is correct
35	Correct	29 ms	9820 KB	Output is correct
36	Correct	5 ms	9816 KB	Output is correct
37	Correct	30 ms	9888 KB	Output is correct
38	Correct	20 ms	9872 KB	Output is correct
39	Correct	18 ms	9820 KB	Output is correct
40	Correct	6 ms	10076 KB	Output is correct
41	Correct	6 ms	9820 KB	Output is correct
42	Correct	6 ms	9840 KB	Output is correct
43	Correct	12 ms	9820 KB	Output is correct
44	Correct	13 ms	9820 KB	Output is correct
45	Correct	16 ms	9816 KB	Output is correct
46	Correct	18 ms	9820 KB	Output is correct
47	Correct	17 ms	9820 KB	Output is correct
48	Correct	21 ms	9816 KB	Output is correct
49	Correct	25 ms	9820 KB	Output is correct
50	Correct	25 ms	9820 KB	Output is correct
51	Correct	22 ms	9820 KB	Output is correct
52	Correct	23 ms	9820 KB	Output is correct
53	Correct	25 ms	9820 KB	Output is correct
54	Correct	28 ms	9876 KB	Output is correct
55	Correct	555 ms	12004 KB	Output is correct
56	Correct	1080 ms	15568 KB	Output is correct
57	Correct	787 ms	14296 KB	Output is correct
58	Correct	704 ms	11740 KB	Output is correct
59	Correct	1581 ms	11736 KB	Output is correct
60	Correct	1726 ms	14040 KB	Output is correct
61	Correct	948 ms	11916 KB	Output is correct
62	Correct	1029 ms	15572 KB	Output is correct
63	Correct	923 ms	10716 KB	Output is correct
64	Correct	1156 ms	12000 KB	Output is correct
65	Correct	1161 ms	15316 KB	Output is correct

Subtask #6
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	2 ms	9564 KB	Output is correct
4	Correct	2 ms	9564 KB	Output is correct
5	Correct	2 ms	9564 KB	Output is correct
6	Correct	2 ms	9564 KB	Output is correct
7	Correct	2 ms	9564 KB	Output is correct
8	Correct	3 ms	9564 KB	Output is correct
9	Correct	2 ms	9564 KB	Output is correct
10	Correct	3 ms	9564 KB	Output is correct
11	Correct	3 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9564 KB	Output is correct
14	Correct	3 ms	9532 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	2 ms	9564 KB	Output is correct
17	Correct	2 ms	9560 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	3 ms	9564 KB	Output is correct
20	Correct	3 ms	9564 KB	Output is correct
21	Correct	3 ms	9564 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	3 ms	9564 KB	Output is correct
26	Correct	2 ms	9560 KB	Output is correct
27	Correct	2 ms	9560 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	20 ms	9816 KB	Output is correct
30	Correct	19 ms	9820 KB	Output is correct
31	Correct	27 ms	9820 KB	Output is correct
32	Correct	25 ms	9820 KB	Output is correct
33	Correct	21 ms	9820 KB	Output is correct
34	Correct	14 ms	9820 KB	Output is correct
35	Correct	29 ms	9820 KB	Output is correct
36	Correct	5 ms	9816 KB	Output is correct
37	Correct	30 ms	9888 KB	Output is correct
38	Correct	20 ms	9872 KB	Output is correct
39	Correct	18 ms	9820 KB	Output is correct
40	Correct	6 ms	10076 KB	Output is correct
41	Correct	6 ms	9820 KB	Output is correct
42	Correct	6 ms	9840 KB	Output is correct
43	Correct	12 ms	9820 KB	Output is correct
44	Correct	13 ms	9820 KB	Output is correct
45	Correct	16 ms	9816 KB	Output is correct
46	Correct	18 ms	9820 KB	Output is correct
47	Correct	17 ms	9820 KB	Output is correct
48	Correct	21 ms	9816 KB	Output is correct
49	Correct	25 ms	9820 KB	Output is correct
50	Correct	25 ms	9820 KB	Output is correct
51	Correct	22 ms	9820 KB	Output is correct
52	Correct	23 ms	9820 KB	Output is correct
53	Correct	25 ms	9820 KB	Output is correct
54	Correct	28 ms	9876 KB	Output is correct
55	Incorrect	69 ms	14476 KB	Output isn't correct
56	Halted	0 ms	0 KB	-

답안 #925891

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 0 / 25.0

Subtask #4 0 / 10.0

Subtask #5 22.0 / 22.0

Subtask #6 0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
22.0 / 22.0

Subtask #6
0 / 29.0