Submission #925897

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
925897	2024-02-12T10:29:48 Z	vjudge1	Joker (BOI20_joker)	C++17	61 / 100	1724 ms	262144 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[201];
		bool ans[q + 1];
		for (int i = 1; i <= q; i++) {
			int l, r;
			cin >> l >> r;
			qr[l].push_back({r + 1, i});
		}
		for (int l = 1; l <= min(m, 200); l++) {
			for (int j = 1; j <= n; j++) 
				p[j] = j, sz[j] = 1;
			for (int j = 1; j < l; j++) add(j);
			int p = m + 1;
			sort(rall(qr[l]));
			for (auto [r, id]: qr[l]) {
				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:166:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  166 | main() {
      | ^~~~
Joker.cpp: In function 'void slv()':
Joker.cpp:154:3: warning: 'pos' may be used uninitialized in this function [-Wmaybe-uninitialized]
  154 |   for (int i = pos; i >= l; i--)
      |   ^~~

Subtask #1
6.0 / 6.0

#	Verdict	Execution time	Memory	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	3 ms	9564 KB	Output is correct
10	Correct	2 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	9564 KB	Output is correct
15	Correct	3 ms	9560 KB	Output is correct
16	Correct	3 ms	9816 KB	Output is correct
17	Correct	3 ms	9564 KB	Output is correct
18	Correct	2 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	9564 KB	Output is correct
27	Correct	3 ms	9564 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	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	3 ms	9564 KB	Output is correct
10	Correct	2 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	9564 KB	Output is correct
15	Correct	3 ms	9560 KB	Output is correct
16	Correct	3 ms	9816 KB	Output is correct
17	Correct	3 ms	9564 KB	Output is correct
18	Correct	2 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	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	23 ms	9820 KB	Output is correct
30	Correct	21 ms	9816 KB	Output is correct
31	Correct	27 ms	10072 KB	Output is correct
32	Correct	25 ms	9816 KB	Output is correct
33	Correct	21 ms	10016 KB	Output is correct
34	Correct	11 ms	9872 KB	Output is correct
35	Correct	30 ms	9820 KB	Output is correct
36	Correct	5 ms	10072 KB	Output is correct
37	Correct	33 ms	9896 KB	Output is correct
38	Correct	21 ms	9888 KB	Output is correct
39	Correct	19 ms	9820 KB	Output is correct
40	Correct	6 ms	9820 KB	Output is correct
41	Correct	6 ms	9820 KB	Output is correct
42	Correct	5 ms	9820 KB	Output is correct
43	Correct	11 ms	9820 KB	Output is correct
44	Correct	13 ms	9820 KB	Output is correct
45	Correct	15 ms	9876 KB	Output is correct
46	Correct	18 ms	9820 KB	Output is correct
47	Correct	18 ms	9836 KB	Output is correct
48	Correct	21 ms	9820 KB	Output is correct
49	Correct	22 ms	9820 KB	Output is correct
50	Correct	27 ms	9820 KB	Output is correct
51	Correct	22 ms	9820 KB	Output is correct
52	Correct	26 ms	9848 KB	Output is correct
53	Correct	24 ms	9816 KB	Output is correct
54	Correct	28 ms	9820 KB	Output is correct

Subtask #3
25.0 / 25.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	7516 KB	Output is correct
2	Correct	2 ms	7516 KB	Output is correct
3	Correct	81 ms	14460 KB	Output is correct
4	Correct	108 ms	15696 KB	Output is correct
5	Correct	112 ms	15952 KB	Output is correct
6	Correct	90 ms	14480 KB	Output is correct
7	Correct	93 ms	14540 KB	Output is correct
8	Correct	80 ms	14540 KB	Output is correct
9	Correct	89 ms	14536 KB	Output is correct
10	Correct	107 ms	15952 KB	Output is correct
11	Correct	93 ms	14540 KB	Output is correct
12	Correct	108 ms	16732 KB	Output is correct
13	Correct	81 ms	13960 KB	Output is correct
14	Correct	83 ms	14540 KB	Output is correct
15	Correct	101 ms	17484 KB	Output is correct
16	Correct	111 ms	17484 KB	Output is correct

Subtask #4
0 / 10.0

#	Verdict	Execution time	Memory	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	3 ms	9564 KB	Output is correct
10	Correct	2 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	9564 KB	Output is correct
15	Correct	3 ms	9560 KB	Output is correct
16	Correct	3 ms	9816 KB	Output is correct
17	Correct	3 ms	9564 KB	Output is correct
18	Correct	2 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	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	81 ms	14460 KB	Output is correct
30	Correct	108 ms	15696 KB	Output is correct
31	Correct	112 ms	15952 KB	Output is correct
32	Correct	90 ms	14480 KB	Output is correct
33	Correct	93 ms	14540 KB	Output is correct
34	Correct	80 ms	14540 KB	Output is correct
35	Correct	89 ms	14536 KB	Output is correct
36	Correct	107 ms	15952 KB	Output is correct
37	Correct	93 ms	14540 KB	Output is correct
38	Correct	108 ms	16732 KB	Output is correct
39	Correct	81 ms	13960 KB	Output is correct
40	Correct	83 ms	14540 KB	Output is correct
41	Correct	101 ms	17484 KB	Output is correct
42	Correct	111 ms	17484 KB	Output is correct
43	Runtime error	460 ms	262144 KB	Execution killed with signal 9
44	Halted	0 ms	0 KB	-

Subtask #5
22.0 / 22.0

#	Verdict	Execution time	Memory	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	3 ms	9564 KB	Output is correct
10	Correct	2 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	9564 KB	Output is correct
15	Correct	3 ms	9560 KB	Output is correct
16	Correct	3 ms	9816 KB	Output is correct
17	Correct	3 ms	9564 KB	Output is correct
18	Correct	2 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	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	23 ms	9820 KB	Output is correct
30	Correct	21 ms	9816 KB	Output is correct
31	Correct	27 ms	10072 KB	Output is correct
32	Correct	25 ms	9816 KB	Output is correct
33	Correct	21 ms	10016 KB	Output is correct
34	Correct	11 ms	9872 KB	Output is correct
35	Correct	30 ms	9820 KB	Output is correct
36	Correct	5 ms	10072 KB	Output is correct
37	Correct	33 ms	9896 KB	Output is correct
38	Correct	21 ms	9888 KB	Output is correct
39	Correct	19 ms	9820 KB	Output is correct
40	Correct	6 ms	9820 KB	Output is correct
41	Correct	6 ms	9820 KB	Output is correct
42	Correct	5 ms	9820 KB	Output is correct
43	Correct	11 ms	9820 KB	Output is correct
44	Correct	13 ms	9820 KB	Output is correct
45	Correct	15 ms	9876 KB	Output is correct
46	Correct	18 ms	9820 KB	Output is correct
47	Correct	18 ms	9836 KB	Output is correct
48	Correct	21 ms	9820 KB	Output is correct
49	Correct	22 ms	9820 KB	Output is correct
50	Correct	27 ms	9820 KB	Output is correct
51	Correct	22 ms	9820 KB	Output is correct
52	Correct	26 ms	9848 KB	Output is correct
53	Correct	24 ms	9816 KB	Output is correct
54	Correct	28 ms	9820 KB	Output is correct
55	Correct	542 ms	11736 KB	Output is correct
56	Correct	1113 ms	15316 KB	Output is correct
57	Correct	786 ms	15584 KB	Output is correct
58	Correct	732 ms	11740 KB	Output is correct
59	Correct	1617 ms	11740 KB	Output is correct
60	Correct	1724 ms	15324 KB	Output is correct
61	Correct	903 ms	12004 KB	Output is correct
62	Correct	1000 ms	15316 KB	Output is correct
63	Correct	904 ms	10908 KB	Output is correct
64	Correct	1138 ms	11936 KB	Output is correct
65	Correct	1165 ms	14548 KB	Output is correct

Subtask #6
0 / 29.0

#	Verdict	Execution time	Memory	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	3 ms	9564 KB	Output is correct
10	Correct	2 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	9564 KB	Output is correct
15	Correct	3 ms	9560 KB	Output is correct
16	Correct	3 ms	9816 KB	Output is correct
17	Correct	3 ms	9564 KB	Output is correct
18	Correct	2 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	9564 KB	Output is correct
27	Correct	3 ms	9564 KB	Output is correct
28	Correct	3 ms	9564 KB	Output is correct
29	Correct	23 ms	9820 KB	Output is correct
30	Correct	21 ms	9816 KB	Output is correct
31	Correct	27 ms	10072 KB	Output is correct
32	Correct	25 ms	9816 KB	Output is correct
33	Correct	21 ms	10016 KB	Output is correct
34	Correct	11 ms	9872 KB	Output is correct
35	Correct	30 ms	9820 KB	Output is correct
36	Correct	5 ms	10072 KB	Output is correct
37	Correct	33 ms	9896 KB	Output is correct
38	Correct	21 ms	9888 KB	Output is correct
39	Correct	19 ms	9820 KB	Output is correct
40	Correct	6 ms	9820 KB	Output is correct
41	Correct	6 ms	9820 KB	Output is correct
42	Correct	5 ms	9820 KB	Output is correct
43	Correct	11 ms	9820 KB	Output is correct
44	Correct	13 ms	9820 KB	Output is correct
45	Correct	15 ms	9876 KB	Output is correct
46	Correct	18 ms	9820 KB	Output is correct
47	Correct	18 ms	9836 KB	Output is correct
48	Correct	21 ms	9820 KB	Output is correct
49	Correct	22 ms	9820 KB	Output is correct
50	Correct	27 ms	9820 KB	Output is correct
51	Correct	22 ms	9820 KB	Output is correct
52	Correct	26 ms	9848 KB	Output is correct
53	Correct	24 ms	9816 KB	Output is correct
54	Correct	28 ms	9820 KB	Output is correct
55	Correct	81 ms	14460 KB	Output is correct
56	Correct	108 ms	15696 KB	Output is correct
57	Correct	112 ms	15952 KB	Output is correct
58	Correct	90 ms	14480 KB	Output is correct
59	Correct	93 ms	14540 KB	Output is correct
60	Correct	80 ms	14540 KB	Output is correct
61	Correct	89 ms	14536 KB	Output is correct
62	Correct	107 ms	15952 KB	Output is correct
63	Correct	93 ms	14540 KB	Output is correct
64	Correct	108 ms	16732 KB	Output is correct
65	Correct	81 ms	13960 KB	Output is correct
66	Correct	83 ms	14540 KB	Output is correct
67	Correct	101 ms	17484 KB	Output is correct
68	Correct	111 ms	17484 KB	Output is correct
69	Runtime error	460 ms	262144 KB	Execution killed with signal 9
70	Halted	0 ms	0 KB	-

Submission #925897

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 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
25.0 / 25.0

Subtask #4
0 / 10.0

Subtask #5
22.0 / 22.0

Subtask #6
0 / 29.0