Submission #744339

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
744339	2023-05-18T12:41:17 Z	HamletPetrosyan	Strange Device (APIO19_strange_device)	C++17	100 / 100	643 ms	63808 KB

strange_device

#include <bits/stdc++.h>
using namespace std;

#define all(a) (a).begin(), (a).end()
#define add push_back
#define pll pair<long long, long long>
#define ll long long
#define fr first
#define sc second

const int N = 1e6 + 5;

ll n, a, b;
ll k, h;
pll rng[N];
vector<pll> v;

void add_range(ll x, ll y){
	if(x <= y){
		v.add({x, 0});
		v.add({y, 1});
	}
	else {
		v.add({x, 0});
		v.add({h - 1, 1});
		v.add({0, 0});
		v.add({y, 1});
	}
}

void solve(){
	cin >> n >> a >> b;
	ll cnt = 0;
	for(int i = 0; i < n; i++){
		cin >> rng[i].fr >> rng[i].sc;
		cnt += rng[i].sc - rng[i].fr + 1;
	}
	k = a / __gcd(a, b + 1);
	ll maxk = 2'000'000'000'000'000'000ll / b;
	if(k >= maxk){
		cout << cnt << "\n";
		return;
	}
	h = k * b;

	for(int i = 0; i < n; i++){
		if((rng[i].sc - rng[i].fr + 1) / h > 0){
			cout << h << "\n";
			return;
		}
		add_range(rng[i].fr % h, rng[i].sc % h);
	}
	sort(all(v));

	ll ans = 0, opnd = 0, last = -1;
	for(auto& [tiv, id] : v){
		if(opnd) ans += tiv - last;
		else ans++;
		last = tiv;

		if(id) opnd--;
		else opnd++;
	}
	cout << ans << "\n";
}

int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	solve();
	return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	6 ms	1484 KB	Output is correct
3	Correct	6 ms	1496 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	320 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	328 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	5 ms	1496 KB	Output is correct
17	Correct	60 ms	9824 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	1 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	344 ms	51432 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	519 ms	54316 KB	Output is correct
3	Correct	557 ms	52056 KB	Output is correct
4	Correct	507 ms	63584 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	519 ms	54316 KB	Output is correct
3	Correct	557 ms	52056 KB	Output is correct
4	Correct	507 ms	63584 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	528 ms	63672 KB	Output is correct
7	Correct	517 ms	63600 KB	Output is correct
8	Correct	499 ms	63672 KB	Output is correct
9	Correct	585 ms	63604 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	519 ms	54316 KB	Output is correct
3	Correct	557 ms	52056 KB	Output is correct
4	Correct	507 ms	63584 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	51 ms	9796 KB	Output is correct
7	Correct	52 ms	9752 KB	Output is correct
8	Correct	49 ms	9796 KB	Output is correct
9	Correct	51 ms	9840 KB	Output is correct
10	Correct	47 ms	9796 KB	Output is correct
11	Correct	51 ms	9828 KB	Output is correct
12	Correct	45 ms	9864 KB	Output is correct
13	Correct	58 ms	9832 KB	Output is correct
14	Correct	53 ms	9824 KB	Output is correct
15	Correct	58 ms	9792 KB	Output is correct
16	Correct	55 ms	9836 KB	Output is correct
17	Correct	48 ms	9796 KB	Output is correct
18	Correct	523 ms	63636 KB	Output is correct
19	Correct	484 ms	63580 KB	Output is correct
20	Correct	603 ms	63584 KB	Output is correct
21	Correct	71 ms	9804 KB	Output is correct
22	Correct	48 ms	9812 KB	Output is correct
23	Correct	142 ms	34752 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	53 ms	9720 KB	Output is correct
3	Correct	64 ms	9924 KB	Output is correct
4	Correct	643 ms	61844 KB	Output is correct
5	Correct	52 ms	9796 KB	Output is correct
6	Correct	54 ms	9776 KB	Output is correct
7	Correct	52 ms	9876 KB	Output is correct
8	Correct	63 ms	9784 KB	Output is correct
9	Correct	53 ms	9784 KB	Output is correct
10	Correct	52 ms	9812 KB	Output is correct
11	Correct	53 ms	9800 KB	Output is correct
12	Correct	48 ms	9796 KB	Output is correct
13	Correct	52 ms	9812 KB	Output is correct
14	Correct	604 ms	61948 KB	Output is correct
15	Correct	67 ms	9728 KB	Output is correct
16	Correct	531 ms	63560 KB	Output is correct
17	Correct	510 ms	63548 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct

Subtask #8
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	6 ms	1484 KB	Output is correct
3	Correct	6 ms	1496 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	320 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	328 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	5 ms	1496 KB	Output is correct
17	Correct	60 ms	9824 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	332 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	344 ms	51432 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	519 ms	54316 KB	Output is correct
31	Correct	557 ms	52056 KB	Output is correct
32	Correct	507 ms	63584 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	528 ms	63672 KB	Output is correct
35	Correct	517 ms	63600 KB	Output is correct
36	Correct	499 ms	63672 KB	Output is correct
37	Correct	585 ms	63604 KB	Output is correct
38	Correct	1 ms	212 KB	Output is correct
39	Correct	51 ms	9796 KB	Output is correct
40	Correct	52 ms	9752 KB	Output is correct
41	Correct	49 ms	9796 KB	Output is correct
42	Correct	51 ms	9840 KB	Output is correct
43	Correct	47 ms	9796 KB	Output is correct
44	Correct	51 ms	9828 KB	Output is correct
45	Correct	45 ms	9864 KB	Output is correct
46	Correct	58 ms	9832 KB	Output is correct
47	Correct	53 ms	9824 KB	Output is correct
48	Correct	58 ms	9792 KB	Output is correct
49	Correct	55 ms	9836 KB	Output is correct
50	Correct	48 ms	9796 KB	Output is correct
51	Correct	523 ms	63636 KB	Output is correct
52	Correct	484 ms	63580 KB	Output is correct
53	Correct	603 ms	63584 KB	Output is correct
54	Correct	71 ms	9804 KB	Output is correct
55	Correct	48 ms	9812 KB	Output is correct
56	Correct	142 ms	34752 KB	Output is correct
57	Correct	1 ms	212 KB	Output is correct
58	Correct	53 ms	9720 KB	Output is correct
59	Correct	64 ms	9924 KB	Output is correct
60	Correct	643 ms	61844 KB	Output is correct
61	Correct	52 ms	9796 KB	Output is correct
62	Correct	54 ms	9776 KB	Output is correct
63	Correct	52 ms	9876 KB	Output is correct
64	Correct	63 ms	9784 KB	Output is correct
65	Correct	53 ms	9784 KB	Output is correct
66	Correct	52 ms	9812 KB	Output is correct
67	Correct	53 ms	9800 KB	Output is correct
68	Correct	48 ms	9796 KB	Output is correct
69	Correct	52 ms	9812 KB	Output is correct
70	Correct	604 ms	61948 KB	Output is correct
71	Correct	67 ms	9728 KB	Output is correct
72	Correct	531 ms	63560 KB	Output is correct
73	Correct	510 ms	63548 KB	Output is correct
74	Correct	1 ms	212 KB	Output is correct
75	Correct	1 ms	212 KB	Output is correct
76	Correct	0 ms	212 KB	Output is correct
77	Correct	1 ms	212 KB	Output is correct
78	Correct	1 ms	332 KB	Output is correct
79	Correct	7 ms	1496 KB	Output is correct
80	Correct	611 ms	63704 KB	Output is correct
81	Correct	627 ms	63800 KB	Output is correct
82	Correct	593 ms	63732 KB	Output is correct
83	Correct	568 ms	63808 KB	Output is correct
84	Correct	620 ms	63672 KB	Output is correct
85	Correct	550 ms	63660 KB	Output is correct
86	Correct	137 ms	34664 KB	Output is correct
87	Correct	0 ms	332 KB	Output is correct

Submission #744339

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