Submission #564155

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
564155	2022-05-18T15:53:11 Z	ngpin04	Strange Device (APIO19_strange_device)	C++14	100 / 100	639 ms	68944 KB

strange_device

#include <bits/stdc++.h>
#define fi first
#define se second
#define mp make_pair
#define TASK ""
#define bit(x) (1LL << (x))
#define getbit(x, i) (((x) >> (i)) & 1)
#define ALL(x) (x).begin(), (x).end() 
using namespace std;
template <typename T1, typename T2> bool mini(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}
template <typename T1, typename T2> bool maxi(T1 &a, T2 b) {
	if (a < b) {a = b; return true;} return false;
}
mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count());

int rand(int l, int r) {
	return l + rd() % (r - l + 1);
}
const int N = 1e5 + 5; 
const int oo = 1e9;
const long long ooo = 1e18;
const int mod = 1e9 + 7; // 998244353;
const long double pi = acos(-1);

long long lcm(long long a, long long b) {
	long long res = a / __gcd(a, b);
	if (res > 2 * ooo / b)
		return 2 * ooo;
	return res * b;
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	#ifdef ONLINE_JUDGE
	// freopen(TASK".inp","r",stdin);
	// freopen(TASK".out","w",stdout);
	#endif
	long long n, A, B;
	cin >> n >> A >> B;
	long long x = __gcd(A, B + 1);
	long long y = B;
	A /= x;
	if (A > 2 * ooo / y)
		A = 2 * ooo;	
	else
		A *= y;

	long long len = lcm(A, B);

	vector <pair <long long, int>> events;

	for (int i = 1; i <= n; i++) {
		long long l, r;
		cin >> l >> r;
		if (r - l + 1 >= len) 		
			return cout << len, 0;

		events.push_back(mp(l % len, 1));
		events.push_back(mp(r % len + 1, -1));
		if (l % len > r % len) {
			events.push_back(mp(0, 1));
			events.push_back(mp(len, -1));
		}	
	}
	sort(ALL(events));

	long long ans = 0;
	long long pre = 0;
	int cnt = 0;
	for (pair <long long, int> pir : events) {
		if (cnt > 0) 
			ans += pir.fi - pre;
		// cerr << pre << " " << pir.fi << "\n";
		cnt += pir.se;
		pre = pir.fi;
	}
	cout << ans;
	return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	5 ms	984 KB	Output is correct
3	Correct	6 ms	1300 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	328 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	324 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	324 KB	Output is correct
16	Correct	5 ms	1240 KB	Output is correct
17	Correct	59 ms	7248 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Memory	Grader output
1	Correct	212 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct
5	Correct	212 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	1 ms	340 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	33172 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	472 ms	33240 KB	Output is correct
3	Correct	494 ms	33188 KB	Output is correct
4	Correct	456 ms	33232 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	472 ms	33240 KB	Output is correct
3	Correct	494 ms	33188 KB	Output is correct
4	Correct	456 ms	33232 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	482 ms	33336 KB	Output is correct
7	Correct	494 ms	33188 KB	Output is correct
8	Correct	477 ms	33184 KB	Output is correct
9	Correct	557 ms	33256 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	472 ms	33240 KB	Output is correct
3	Correct	494 ms	33188 KB	Output is correct
4	Correct	456 ms	33232 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	47 ms	4512 KB	Output is correct
7	Correct	48 ms	4508 KB	Output is correct
8	Correct	44 ms	4508 KB	Output is correct
9	Correct	45 ms	4556 KB	Output is correct
10	Correct	43 ms	4468 KB	Output is correct
11	Correct	47 ms	4484 KB	Output is correct
12	Correct	48 ms	7220 KB	Output is correct
13	Correct	56 ms	7216 KB	Output is correct
14	Correct	51 ms	7236 KB	Output is correct
15	Correct	56 ms	7224 KB	Output is correct
16	Correct	54 ms	7260 KB	Output is correct
17	Correct	48 ms	7220 KB	Output is correct
18	Correct	524 ms	68880 KB	Output is correct
19	Correct	491 ms	61708 KB	Output is correct
20	Correct	620 ms	61240 KB	Output is correct
21	Correct	55 ms	7240 KB	Output is correct
22	Correct	42 ms	7232 KB	Output is correct
23	Correct	145 ms	26680 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	52 ms	4488 KB	Output is correct
3	Correct	54 ms	4556 KB	Output is correct
4	Correct	607 ms	33192 KB	Output is correct
5	Correct	50 ms	4556 KB	Output is correct
6	Correct	51 ms	4556 KB	Output is correct
7	Correct	52 ms	4512 KB	Output is correct
8	Correct	54 ms	4532 KB	Output is correct
9	Correct	49 ms	4556 KB	Output is correct
10	Correct	55 ms	4564 KB	Output is correct
11	Correct	50 ms	4476 KB	Output is correct
12	Correct	44 ms	4564 KB	Output is correct
13	Correct	52 ms	4528 KB	Output is correct
14	Correct	563 ms	33184 KB	Output is correct
15	Correct	54 ms	4456 KB	Output is correct
16	Correct	439 ms	33256 KB	Output is correct
17	Correct	471 ms	33312 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	0 ms	212 KB	Output is correct
2	Correct	5 ms	984 KB	Output is correct
3	Correct	6 ms	1300 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	328 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	0 ms	324 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	324 KB	Output is correct
16	Correct	5 ms	1240 KB	Output is correct
17	Correct	59 ms	7248 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	1 ms	340 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	33172 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	472 ms	33240 KB	Output is correct
31	Correct	494 ms	33188 KB	Output is correct
32	Correct	456 ms	33232 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	482 ms	33336 KB	Output is correct
35	Correct	494 ms	33188 KB	Output is correct
36	Correct	477 ms	33184 KB	Output is correct
37	Correct	557 ms	33256 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	47 ms	4512 KB	Output is correct
40	Correct	48 ms	4508 KB	Output is correct
41	Correct	44 ms	4508 KB	Output is correct
42	Correct	45 ms	4556 KB	Output is correct
43	Correct	43 ms	4468 KB	Output is correct
44	Correct	47 ms	4484 KB	Output is correct
45	Correct	48 ms	7220 KB	Output is correct
46	Correct	56 ms	7216 KB	Output is correct
47	Correct	51 ms	7236 KB	Output is correct
48	Correct	56 ms	7224 KB	Output is correct
49	Correct	54 ms	7260 KB	Output is correct
50	Correct	48 ms	7220 KB	Output is correct
51	Correct	524 ms	68880 KB	Output is correct
52	Correct	491 ms	61708 KB	Output is correct
53	Correct	620 ms	61240 KB	Output is correct
54	Correct	55 ms	7240 KB	Output is correct
55	Correct	42 ms	7232 KB	Output is correct
56	Correct	145 ms	26680 KB	Output is correct
57	Correct	0 ms	212 KB	Output is correct
58	Correct	52 ms	4488 KB	Output is correct
59	Correct	54 ms	4556 KB	Output is correct
60	Correct	607 ms	33192 KB	Output is correct
61	Correct	50 ms	4556 KB	Output is correct
62	Correct	51 ms	4556 KB	Output is correct
63	Correct	52 ms	4512 KB	Output is correct
64	Correct	54 ms	4532 KB	Output is correct
65	Correct	49 ms	4556 KB	Output is correct
66	Correct	55 ms	4564 KB	Output is correct
67	Correct	50 ms	4476 KB	Output is correct
68	Correct	44 ms	4564 KB	Output is correct
69	Correct	52 ms	4528 KB	Output is correct
70	Correct	563 ms	33184 KB	Output is correct
71	Correct	54 ms	4456 KB	Output is correct
72	Correct	439 ms	33256 KB	Output is correct
73	Correct	471 ms	33312 KB	Output is correct
74	Correct	1 ms	212 KB	Output is correct
75	Correct	0 ms	324 KB	Output is correct
76	Correct	1 ms	212 KB	Output is correct
77	Correct	1 ms	212 KB	Output is correct
78	Correct	1 ms	324 KB	Output is correct
79	Correct	6 ms	1240 KB	Output is correct
80	Correct	632 ms	68212 KB	Output is correct
81	Correct	639 ms	68244 KB	Output is correct
82	Correct	603 ms	68112 KB	Output is correct
83	Correct	594 ms	68944 KB	Output is correct
84	Correct	590 ms	68836 KB	Output is correct
85	Correct	600 ms	68892 KB	Output is correct
86	Correct	141 ms	26716 KB	Output is correct
87	Correct	1 ms	212 KB	Output is correct

Submission #564155

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