Submission #925903

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
925903	2024-02-12T10:34:03 Z	vjudge1	Joker (BOI20_joker)	C++17	36 / 100	2000 ms	19700 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 = 1500;

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;
	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:140:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  140 | main() {
      | ^~~~
Joker.cpp: In function 'void slv()':
Joker.cpp:128:3: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
  128 |   for (int i = pos; i >= l; i--)
      |   ^~~

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	7512 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	3 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	9560 KB	Output is correct
10	Correct	2 ms	9560 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9560 KB	Output is correct
14	Correct	3 ms	9560 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	9564 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	2 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	4 ms	9564 KB	Output is correct
23	Correct	3 ms	9560 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	2 ms	9564 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	2 ms	9560 KB	Output is correct

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	7512 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	3 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	9560 KB	Output is correct
10	Correct	2 ms	9560 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9560 KB	Output is correct
14	Correct	3 ms	9560 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	9564 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	2 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	4 ms	9564 KB	Output is correct
23	Correct	3 ms	9560 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	2 ms	9564 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	2 ms	9560 KB	Output is correct
29	Correct	38 ms	9800 KB	Output is correct
30	Correct	31 ms	9820 KB	Output is correct
31	Correct	36 ms	9828 KB	Output is correct
32	Correct	34 ms	9820 KB	Output is correct
33	Correct	40 ms	9820 KB	Output is correct
34	Correct	29 ms	10072 KB	Output is correct
35	Correct	32 ms	9816 KB	Output is correct
36	Correct	20 ms	9820 KB	Output is correct
37	Correct	37 ms	9820 KB	Output is correct
38	Correct	33 ms	9860 KB	Output is correct
39	Correct	29 ms	9820 KB	Output is correct
40	Correct	30 ms	9816 KB	Output is correct
41	Correct	24 ms	9832 KB	Output is correct
42	Correct	27 ms	9816 KB	Output is correct
43	Correct	48 ms	9764 KB	Output is correct
44	Correct	47 ms	9820 KB	Output is correct
45	Correct	58 ms	9816 KB	Output is correct
46	Correct	45 ms	9860 KB	Output is correct
47	Correct	41 ms	9816 KB	Output is correct
48	Correct	41 ms	9808 KB	Output is correct
49	Correct	38 ms	9824 KB	Output is correct
50	Correct	35 ms	9868 KB	Output is correct
51	Correct	30 ms	9816 KB	Output is correct
52	Correct	33 ms	9840 KB	Output is correct
53	Correct	33 ms	9824 KB	Output is correct
54	Correct	36 ms	9852 KB	Output is correct

Subtask #3
0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	7512 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	1917 ms	14584 KB	Output is correct
4	Execution timed out	2037 ms	19700 KB	Time limit exceeded
5	Halted	0 ms	0 KB	-

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	7512 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	3 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	9560 KB	Output is correct
10	Correct	2 ms	9560 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9560 KB	Output is correct
14	Correct	3 ms	9560 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	9564 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	2 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	4 ms	9564 KB	Output is correct
23	Correct	3 ms	9560 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	2 ms	9564 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	2 ms	9560 KB	Output is correct
29	Correct	1917 ms	14584 KB	Output is correct
30	Execution timed out	2037 ms	19700 KB	Time limit exceeded
31	Halted	0 ms	0 KB	-

Subtask #5
22.0 / 22.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	7512 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	3 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	9560 KB	Output is correct
10	Correct	2 ms	9560 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9560 KB	Output is correct
14	Correct	3 ms	9560 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	9564 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	2 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	4 ms	9564 KB	Output is correct
23	Correct	3 ms	9560 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	2 ms	9564 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	2 ms	9560 KB	Output is correct
29	Correct	38 ms	9800 KB	Output is correct
30	Correct	31 ms	9820 KB	Output is correct
31	Correct	36 ms	9828 KB	Output is correct
32	Correct	34 ms	9820 KB	Output is correct
33	Correct	40 ms	9820 KB	Output is correct
34	Correct	29 ms	10072 KB	Output is correct
35	Correct	32 ms	9816 KB	Output is correct
36	Correct	20 ms	9820 KB	Output is correct
37	Correct	37 ms	9820 KB	Output is correct
38	Correct	33 ms	9860 KB	Output is correct
39	Correct	29 ms	9820 KB	Output is correct
40	Correct	30 ms	9816 KB	Output is correct
41	Correct	24 ms	9832 KB	Output is correct
42	Correct	27 ms	9816 KB	Output is correct
43	Correct	48 ms	9764 KB	Output is correct
44	Correct	47 ms	9820 KB	Output is correct
45	Correct	58 ms	9816 KB	Output is correct
46	Correct	45 ms	9860 KB	Output is correct
47	Correct	41 ms	9816 KB	Output is correct
48	Correct	41 ms	9808 KB	Output is correct
49	Correct	38 ms	9824 KB	Output is correct
50	Correct	35 ms	9868 KB	Output is correct
51	Correct	30 ms	9816 KB	Output is correct
52	Correct	33 ms	9840 KB	Output is correct
53	Correct	33 ms	9824 KB	Output is correct
54	Correct	36 ms	9852 KB	Output is correct
55	Correct	416 ms	11736 KB	Output is correct
56	Correct	775 ms	14816 KB	Output is correct
57	Correct	604 ms	15008 KB	Output is correct
58	Correct	556 ms	11992 KB	Output is correct
59	Correct	1174 ms	11740 KB	Output is correct
60	Correct	1274 ms	15000 KB	Output is correct
61	Correct	725 ms	11740 KB	Output is correct
62	Correct	768 ms	13984 KB	Output is correct
63	Correct	744 ms	10716 KB	Output is correct
64	Correct	936 ms	12000 KB	Output is correct
65	Correct	967 ms	15324 KB	Output is correct

Subtask #6
0 / 29.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	7512 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	3 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	9560 KB	Output is correct
10	Correct	2 ms	9560 KB	Output is correct
11	Correct	2 ms	9564 KB	Output is correct
12	Correct	2 ms	9564 KB	Output is correct
13	Correct	3 ms	9560 KB	Output is correct
14	Correct	3 ms	9560 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	9564 KB	Output is correct
18	Correct	3 ms	9564 KB	Output is correct
19	Correct	2 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	4 ms	9564 KB	Output is correct
23	Correct	3 ms	9560 KB	Output is correct
24	Correct	2 ms	9564 KB	Output is correct
25	Correct	2 ms	9564 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	2 ms	9560 KB	Output is correct
29	Correct	38 ms	9800 KB	Output is correct
30	Correct	31 ms	9820 KB	Output is correct
31	Correct	36 ms	9828 KB	Output is correct
32	Correct	34 ms	9820 KB	Output is correct
33	Correct	40 ms	9820 KB	Output is correct
34	Correct	29 ms	10072 KB	Output is correct
35	Correct	32 ms	9816 KB	Output is correct
36	Correct	20 ms	9820 KB	Output is correct
37	Correct	37 ms	9820 KB	Output is correct
38	Correct	33 ms	9860 KB	Output is correct
39	Correct	29 ms	9820 KB	Output is correct
40	Correct	30 ms	9816 KB	Output is correct
41	Correct	24 ms	9832 KB	Output is correct
42	Correct	27 ms	9816 KB	Output is correct
43	Correct	48 ms	9764 KB	Output is correct
44	Correct	47 ms	9820 KB	Output is correct
45	Correct	58 ms	9816 KB	Output is correct
46	Correct	45 ms	9860 KB	Output is correct
47	Correct	41 ms	9816 KB	Output is correct
48	Correct	41 ms	9808 KB	Output is correct
49	Correct	38 ms	9824 KB	Output is correct
50	Correct	35 ms	9868 KB	Output is correct
51	Correct	30 ms	9816 KB	Output is correct
52	Correct	33 ms	9840 KB	Output is correct
53	Correct	33 ms	9824 KB	Output is correct
54	Correct	36 ms	9852 KB	Output is correct
55	Correct	1917 ms	14584 KB	Output is correct
56	Execution timed out	2037 ms	19700 KB	Time limit exceeded
57	Halted	0 ms	0 KB	-

Submission #925903

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