Submission #925916

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
925916	2024-02-12T10:43:27 Z	vjudge1	Joker (BOI20_joker)	C++17	36 / 100	2000 ms	17232 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 = 3000;

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	1 ms	7516 KB	Output is correct
3	Correct	3 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	9560 KB	Output is correct
10	Correct	3 ms	9768 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	2 ms	9564 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	3 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	9764 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	3 ms	9564 KB	Output is correct
25	Correct	2 ms	9764 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9760 KB	Output is correct
28	Correct	3 ms	9564 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	1 ms	7516 KB	Output is correct
3	Correct	3 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	9560 KB	Output is correct
10	Correct	3 ms	9768 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	2 ms	9564 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	3 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	9764 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	3 ms	9564 KB	Output is correct
25	Correct	2 ms	9764 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9760 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	44 ms	9820 KB	Output is correct
30	Correct	52 ms	9820 KB	Output is correct
31	Correct	45 ms	9852 KB	Output is correct
32	Correct	41 ms	9816 KB	Output is correct
33	Correct	35 ms	9816 KB	Output is correct
34	Correct	45 ms	9816 KB	Output is correct
35	Correct	51 ms	9816 KB	Output is correct
36	Correct	31 ms	9820 KB	Output is correct
37	Correct	58 ms	9820 KB	Output is correct
38	Correct	67 ms	9816 KB	Output is correct
39	Correct	43 ms	9848 KB	Output is correct
40	Correct	39 ms	9820 KB	Output is correct
41	Correct	30 ms	9820 KB	Output is correct
42	Correct	34 ms	9616 KB	Output is correct
43	Correct	72 ms	9820 KB	Output is correct
44	Correct	74 ms	9816 KB	Output is correct
45	Correct	76 ms	9852 KB	Output is correct
46	Correct	76 ms	9844 KB	Output is correct
47	Correct	35 ms	9816 KB	Output is correct
48	Correct	38 ms	9820 KB	Output is correct
49	Correct	41 ms	9868 KB	Output is correct
50	Correct	45 ms	9820 KB	Output is correct
51	Correct	35 ms	9820 KB	Output is correct
52	Correct	40 ms	9820 KB	Output is correct
53	Correct	44 ms	9816 KB	Output is correct
54	Correct	48 ms	9820 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	1 ms	7516 KB	Output is correct
3	Execution timed out	2035 ms	14332 KB	Time limit exceeded
4	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	1 ms	7516 KB	Output is correct
3	Correct	3 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	9560 KB	Output is correct
10	Correct	3 ms	9768 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	2 ms	9564 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	3 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	9764 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	3 ms	9564 KB	Output is correct
25	Correct	2 ms	9764 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9760 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Execution timed out	2035 ms	14332 KB	Time limit exceeded
30	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	1 ms	7516 KB	Output is correct
3	Correct	3 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	9560 KB	Output is correct
10	Correct	3 ms	9768 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	2 ms	9564 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	3 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	9764 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	3 ms	9564 KB	Output is correct
25	Correct	2 ms	9764 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9760 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	44 ms	9820 KB	Output is correct
30	Correct	52 ms	9820 KB	Output is correct
31	Correct	45 ms	9852 KB	Output is correct
32	Correct	41 ms	9816 KB	Output is correct
33	Correct	35 ms	9816 KB	Output is correct
34	Correct	45 ms	9816 KB	Output is correct
35	Correct	51 ms	9816 KB	Output is correct
36	Correct	31 ms	9820 KB	Output is correct
37	Correct	58 ms	9820 KB	Output is correct
38	Correct	67 ms	9816 KB	Output is correct
39	Correct	43 ms	9848 KB	Output is correct
40	Correct	39 ms	9820 KB	Output is correct
41	Correct	30 ms	9820 KB	Output is correct
42	Correct	34 ms	9616 KB	Output is correct
43	Correct	72 ms	9820 KB	Output is correct
44	Correct	74 ms	9816 KB	Output is correct
45	Correct	76 ms	9852 KB	Output is correct
46	Correct	76 ms	9844 KB	Output is correct
47	Correct	35 ms	9816 KB	Output is correct
48	Correct	38 ms	9820 KB	Output is correct
49	Correct	41 ms	9868 KB	Output is correct
50	Correct	45 ms	9820 KB	Output is correct
51	Correct	35 ms	9820 KB	Output is correct
52	Correct	40 ms	9820 KB	Output is correct
53	Correct	44 ms	9816 KB	Output is correct
54	Correct	48 ms	9820 KB	Output is correct
55	Correct	279 ms	13200 KB	Output is correct
56	Correct	438 ms	17108 KB	Output is correct
57	Correct	395 ms	17232 KB	Output is correct
58	Correct	334 ms	13032 KB	Output is correct
59	Correct	679 ms	13272 KB	Output is correct
60	Correct	690 ms	16428 KB	Output is correct
61	Correct	446 ms	13276 KB	Output is correct
62	Correct	564 ms	16600 KB	Output is correct
63	Correct	443 ms	12296 KB	Output is correct
64	Correct	566 ms	13276 KB	Output is correct
65	Correct	590 ms	16848 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	1 ms	7516 KB	Output is correct
3	Correct	3 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	9560 KB	Output is correct
10	Correct	3 ms	9768 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	2 ms	9564 KB	Output is correct
15	Correct	3 ms	9564 KB	Output is correct
16	Correct	3 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	9764 KB	Output is correct
22	Correct	3 ms	9564 KB	Output is correct
23	Correct	3 ms	9564 KB	Output is correct
24	Correct	3 ms	9564 KB	Output is correct
25	Correct	2 ms	9764 KB	Output is correct
26	Correct	3 ms	9564 KB	Output is correct
27	Correct	3 ms	9760 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	44 ms	9820 KB	Output is correct
30	Correct	52 ms	9820 KB	Output is correct
31	Correct	45 ms	9852 KB	Output is correct
32	Correct	41 ms	9816 KB	Output is correct
33	Correct	35 ms	9816 KB	Output is correct
34	Correct	45 ms	9816 KB	Output is correct
35	Correct	51 ms	9816 KB	Output is correct
36	Correct	31 ms	9820 KB	Output is correct
37	Correct	58 ms	9820 KB	Output is correct
38	Correct	67 ms	9816 KB	Output is correct
39	Correct	43 ms	9848 KB	Output is correct
40	Correct	39 ms	9820 KB	Output is correct
41	Correct	30 ms	9820 KB	Output is correct
42	Correct	34 ms	9616 KB	Output is correct
43	Correct	72 ms	9820 KB	Output is correct
44	Correct	74 ms	9816 KB	Output is correct
45	Correct	76 ms	9852 KB	Output is correct
46	Correct	76 ms	9844 KB	Output is correct
47	Correct	35 ms	9816 KB	Output is correct
48	Correct	38 ms	9820 KB	Output is correct
49	Correct	41 ms	9868 KB	Output is correct
50	Correct	45 ms	9820 KB	Output is correct
51	Correct	35 ms	9820 KB	Output is correct
52	Correct	40 ms	9820 KB	Output is correct
53	Correct	44 ms	9816 KB	Output is correct
54	Correct	48 ms	9820 KB	Output is correct
55	Execution timed out	2035 ms	14332 KB	Time limit exceeded
56	Halted	0 ms	0 KB	-

Submission #925916

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