Submission #579497

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
579497	2022-06-19T09:29:12 Z	joshjms	Strange Device (APIO19_strange_device)	C++17	100 / 100	851 ms	163824 KB

strange_device

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
 
int main()
{
	cin.tie(0) -> ios_base::sync_with_stdio(0);
 
	ll n, a, b;
	cin >> n >> a >> b;
 
	if(a > 1e18 / b)
	{
		ll sum = 0;
		for(int i = 0; i < n; i++)
		{
			ll l, r;
			cin >> l >> r;
			sum += r - l + 1;
		}
 
		cout << sum;
	}
	else
	{
		ll g = a * b / gcd(a, b + 1);
 
		map<ll, vector<ll>> M;
		for(int i = 0; i < n; i++)
		{
			ll l, r;
			cin >> l >> r;
          
          	if(r - l + 1 >= g) {
              cout << g << "\n";
              return 0;
			}
			l %= g, r %= g;
			if(r < l)
			{
				M[0].push_back(r);
				M[l].push_back(g - 1);
			}
			else
			{
				M[l].push_back(r);
			}
		}
	 
		multiset<ll> S;
		vector<pair<ll,ll>> intervals;
	 
		ll begin = 2e18, last = 0;
		for(auto &[st, v] : M)
		{	
			
			while(!S.empty() && *S.begin() < st)
			{
				S.erase(S.begin());
			}
	 
			if(S.empty() && begin != 2e18)
			{
				intervals.push_back({begin, last});
				begin = 2e18;
				last = 0;
			}
	 
			begin = min(begin, st);
	 
			for(auto i : v)
			{
				S.insert(i);
				last = max(last, i);
			}
	 
		}
	 
		if(!S.empty() && begin != 2e18)
		{
			while(!S.empty())
			{
				last = max(last, *S.begin());
				S.erase(S.begin());
			}
	 
			intervals.push_back({begin, last});
		}
	 
		long long ans = 0;
		for(auto [l, r] : intervals) 
		{
			ans += r - l + 1;
		}
		cout << ans;
	}
 
	
 
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	8 ms	1876 KB	Output is correct
3	Correct	8 ms	1852 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	324 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	212 KB	Output is correct
9	Correct	1 ms	320 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	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	7 ms	1936 KB	Output is correct
17	Correct	71 ms	13716 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	316 KB	Output is correct
2	Correct	1 ms	316 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 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	468 KB	Output is correct
3	Correct	1 ms	468 KB	Output is correct
4	Correct	1 ms	468 KB	Output is correct
5	Correct	535 ms	55300 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	696 ms	126700 KB	Output is correct
3	Correct	706 ms	126652 KB	Output is correct
4	Correct	708 ms	126636 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	696 ms	126700 KB	Output is correct
3	Correct	706 ms	126652 KB	Output is correct
4	Correct	708 ms	126636 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	767 ms	126648 KB	Output is correct
7	Correct	714 ms	126732 KB	Output is correct
8	Correct	671 ms	126616 KB	Output is correct
9	Correct	710 ms	126664 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	696 ms	126700 KB	Output is correct
3	Correct	706 ms	126652 KB	Output is correct
4	Correct	708 ms	126636 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	69 ms	13652 KB	Output is correct
7	Correct	65 ms	13688 KB	Output is correct
8	Correct	66 ms	13644 KB	Output is correct
9	Correct	82 ms	13652 KB	Output is correct
10	Correct	74 ms	13764 KB	Output is correct
11	Correct	68 ms	13632 KB	Output is correct
12	Correct	66 ms	13604 KB	Output is correct
13	Correct	65 ms	13608 KB	Output is correct
14	Correct	65 ms	13712 KB	Output is correct
15	Correct	98 ms	13676 KB	Output is correct
16	Correct	80 ms	13624 KB	Output is correct
17	Correct	70 ms	13624 KB	Output is correct
18	Correct	696 ms	126608 KB	Output is correct
19	Correct	785 ms	126700 KB	Output is correct
20	Correct	804 ms	126756 KB	Output is correct
21	Correct	65 ms	13704 KB	Output is correct
22	Correct	74 ms	13656 KB	Output is correct
23	Correct	223 ms	19476 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	320 KB	Output is correct
2	Correct	71 ms	13620 KB	Output is correct
3	Correct	70 ms	13704 KB	Output is correct
4	Correct	797 ms	126792 KB	Output is correct
5	Correct	75 ms	13692 KB	Output is correct
6	Correct	68 ms	13680 KB	Output is correct
7	Correct	81 ms	13720 KB	Output is correct
8	Correct	77 ms	13724 KB	Output is correct
9	Correct	70 ms	13640 KB	Output is correct
10	Correct	65 ms	13636 KB	Output is correct
11	Correct	89 ms	13624 KB	Output is correct
12	Correct	73 ms	13684 KB	Output is correct
13	Correct	74 ms	13656 KB	Output is correct
14	Correct	763 ms	126652 KB	Output is correct
15	Correct	64 ms	13768 KB	Output is correct
16	Correct	724 ms	126604 KB	Output is correct
17	Correct	685 ms	126784 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	8 ms	1876 KB	Output is correct
3	Correct	8 ms	1852 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	1 ms	324 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	212 KB	Output is correct
9	Correct	1 ms	320 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	1 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	7 ms	1936 KB	Output is correct
17	Correct	71 ms	13716 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	1 ms	316 KB	Output is correct
20	Correct	1 ms	316 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 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	468 KB	Output is correct
26	Correct	1 ms	468 KB	Output is correct
27	Correct	1 ms	468 KB	Output is correct
28	Correct	535 ms	55300 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	696 ms	126700 KB	Output is correct
31	Correct	706 ms	126652 KB	Output is correct
32	Correct	708 ms	126636 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	767 ms	126648 KB	Output is correct
35	Correct	714 ms	126732 KB	Output is correct
36	Correct	671 ms	126616 KB	Output is correct
37	Correct	710 ms	126664 KB	Output is correct
38	Correct	1 ms	212 KB	Output is correct
39	Correct	69 ms	13652 KB	Output is correct
40	Correct	65 ms	13688 KB	Output is correct
41	Correct	66 ms	13644 KB	Output is correct
42	Correct	82 ms	13652 KB	Output is correct
43	Correct	74 ms	13764 KB	Output is correct
44	Correct	68 ms	13632 KB	Output is correct
45	Correct	66 ms	13604 KB	Output is correct
46	Correct	65 ms	13608 KB	Output is correct
47	Correct	65 ms	13712 KB	Output is correct
48	Correct	98 ms	13676 KB	Output is correct
49	Correct	80 ms	13624 KB	Output is correct
50	Correct	70 ms	13624 KB	Output is correct
51	Correct	696 ms	126608 KB	Output is correct
52	Correct	785 ms	126700 KB	Output is correct
53	Correct	804 ms	126756 KB	Output is correct
54	Correct	65 ms	13704 KB	Output is correct
55	Correct	74 ms	13656 KB	Output is correct
56	Correct	223 ms	19476 KB	Output is correct
57	Correct	1 ms	320 KB	Output is correct
58	Correct	71 ms	13620 KB	Output is correct
59	Correct	70 ms	13704 KB	Output is correct
60	Correct	797 ms	126792 KB	Output is correct
61	Correct	75 ms	13692 KB	Output is correct
62	Correct	68 ms	13680 KB	Output is correct
63	Correct	81 ms	13720 KB	Output is correct
64	Correct	77 ms	13724 KB	Output is correct
65	Correct	70 ms	13640 KB	Output is correct
66	Correct	65 ms	13636 KB	Output is correct
67	Correct	89 ms	13624 KB	Output is correct
68	Correct	73 ms	13684 KB	Output is correct
69	Correct	74 ms	13656 KB	Output is correct
70	Correct	763 ms	126652 KB	Output is correct
71	Correct	64 ms	13768 KB	Output is correct
72	Correct	724 ms	126604 KB	Output is correct
73	Correct	685 ms	126784 KB	Output is correct
74	Correct	1 ms	212 KB	Output is correct
75	Correct	1 ms	256 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	212 KB	Output is correct
79	Correct	10 ms	2128 KB	Output is correct
80	Correct	835 ms	163640 KB	Output is correct
81	Correct	785 ms	163824 KB	Output is correct
82	Correct	773 ms	163696 KB	Output is correct
83	Correct	771 ms	163332 KB	Output is correct
84	Correct	851 ms	163284 KB	Output is correct
85	Correct	818 ms	163392 KB	Output is correct
86	Correct	206 ms	31420 KB	Output is correct
87	Correct	1 ms	212 KB	Output is correct

Submission #579497

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