Submission #408957

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
408957	2021-05-19T22:28:57 Z	MohamedAhmed04	Strange Device (APIO19_strange_device)	C++14	100 / 100	551 ms	25312 KB

strange_device

#include <bits/stdc++.h>

using namespace std ;

const long long inf = 4e18 ;
const int MAX = 1e5 + 10 ;

bool Overflow_Mul(long double x , long double y)
{
	return (x * y > inf) ;
}

int arr[MAX] ;
int n ;
long long a , b ;

vector< pair<long long , long long> >vp ;

int main()
{
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n>>a>>b ;
	long long x = a / __gcd(a , b+1ll) ;
	if(Overflow_Mul(x , b))
		x = inf ;
	else
		x *= b ;
	long long st = -1 ;
	for(int i = 0 ; i < n ; ++i)
	{
		long long l , r ;
		cin>>l>>r ;
		if(r-l+1ll >= x)
			return cout<<x<<"\n" , 0 ;
		if((r % x) < (l % x))
			st = max(st , (r % x)) , vp.emplace_back((l % x) , x-1ll) ;
		else
			vp.emplace_back((l % x) , (r % x)) ;
	}
	sort(vp.begin() , vp.end()) ;
	long long ans = st+1ll , Max = st ;
	for(auto &p : vp)
	{
		Max = max(Max , p.first - 1ll) ;
		ans += max(0ll , p.second - Max) ;
		Max = max(Max , p.second) ;
	}
	return cout<<ans<<"\n" , 0 ;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	6 ms	976 KB	Output is correct
3	Correct	6 ms	1072 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	324 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	320 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	6 ms	976 KB	Output is correct
17	Correct	56 ms	5628 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	204 KB	Output is correct
3	Correct	1 ms	320 KB	Output is correct
4	Correct	1 ms	320 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	1 ms	332 KB	Output is correct
3	Correct	1 ms	332 KB	Output is correct
4	Correct	1 ms	332 KB	Output is correct
5	Correct	359 ms	22696 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	494 ms	23076 KB	Output is correct
3	Correct	497 ms	23184 KB	Output is correct
4	Correct	471 ms	23148 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	494 ms	23076 KB	Output is correct
3	Correct	497 ms	23184 KB	Output is correct
4	Correct	471 ms	23148 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	477 ms	23128 KB	Output is correct
7	Correct	482 ms	25312 KB	Output is correct
8	Correct	469 ms	25264 KB	Output is correct
9	Correct	546 ms	25260 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	494 ms	23076 KB	Output is correct
3	Correct	497 ms	23184 KB	Output is correct
4	Correct	471 ms	23148 KB	Output is correct
5	Correct	1 ms	204 KB	Output is correct
6	Correct	47 ms	5680 KB	Output is correct
7	Correct	51 ms	5708 KB	Output is correct
8	Correct	47 ms	5656 KB	Output is correct
9	Correct	49 ms	5716 KB	Output is correct
10	Correct	47 ms	5708 KB	Output is correct
11	Correct	50 ms	5692 KB	Output is correct
12	Correct	47 ms	5640 KB	Output is correct
13	Correct	51 ms	5688 KB	Output is correct
14	Correct	48 ms	5688 KB	Output is correct
15	Correct	52 ms	5680 KB	Output is correct
16	Correct	55 ms	5760 KB	Output is correct
17	Correct	53 ms	5720 KB	Output is correct
18	Correct	494 ms	23168 KB	Output is correct
19	Correct	468 ms	23192 KB	Output is correct
20	Correct	528 ms	23244 KB	Output is correct
21	Correct	53 ms	5616 KB	Output is correct
22	Correct	46 ms	5616 KB	Output is correct
23	Correct	148 ms	18404 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	55 ms	5648 KB	Output is correct
3	Correct	52 ms	5692 KB	Output is correct
4	Correct	548 ms	23188 KB	Output is correct
5	Correct	52 ms	5856 KB	Output is correct
6	Correct	51 ms	5824 KB	Output is correct
7	Correct	52 ms	5636 KB	Output is correct
8	Correct	53 ms	5704 KB	Output is correct
9	Correct	51 ms	5640 KB	Output is correct
10	Correct	53 ms	5716 KB	Output is correct
11	Correct	52 ms	5688 KB	Output is correct
12	Correct	46 ms	5632 KB	Output is correct
13	Correct	55 ms	5688 KB	Output is correct
14	Correct	531 ms	23248 KB	Output is correct
15	Correct	51 ms	5692 KB	Output is correct
16	Correct	474 ms	23208 KB	Output is correct
17	Correct	477 ms	23348 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct

Subtask #8
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	204 KB	Output is correct
2	Correct	6 ms	976 KB	Output is correct
3	Correct	6 ms	1072 KB	Output is correct
4	Correct	1 ms	204 KB	Output is correct
5	Correct	1 ms	324 KB	Output is correct
6	Correct	1 ms	204 KB	Output is correct
7	Correct	1 ms	332 KB	Output is correct
8	Correct	1 ms	204 KB	Output is correct
9	Correct	1 ms	204 KB	Output is correct
10	Correct	1 ms	204 KB	Output is correct
11	Correct	1 ms	204 KB	Output is correct
12	Correct	1 ms	320 KB	Output is correct
13	Correct	1 ms	204 KB	Output is correct
14	Correct	1 ms	204 KB	Output is correct
15	Correct	1 ms	204 KB	Output is correct
16	Correct	6 ms	976 KB	Output is correct
17	Correct	56 ms	5628 KB	Output is correct
18	Correct	1 ms	204 KB	Output is correct
19	Correct	1 ms	204 KB	Output is correct
20	Correct	1 ms	204 KB	Output is correct
21	Correct	1 ms	320 KB	Output is correct
22	Correct	1 ms	320 KB	Output is correct
23	Correct	1 ms	204 KB	Output is correct
24	Correct	1 ms	204 KB	Output is correct
25	Correct	1 ms	332 KB	Output is correct
26	Correct	1 ms	332 KB	Output is correct
27	Correct	1 ms	332 KB	Output is correct
28	Correct	359 ms	22696 KB	Output is correct
29	Correct	1 ms	204 KB	Output is correct
30	Correct	494 ms	23076 KB	Output is correct
31	Correct	497 ms	23184 KB	Output is correct
32	Correct	471 ms	23148 KB	Output is correct
33	Correct	1 ms	204 KB	Output is correct
34	Correct	477 ms	23128 KB	Output is correct
35	Correct	482 ms	25312 KB	Output is correct
36	Correct	469 ms	25264 KB	Output is correct
37	Correct	546 ms	25260 KB	Output is correct
38	Correct	1 ms	204 KB	Output is correct
39	Correct	47 ms	5680 KB	Output is correct
40	Correct	51 ms	5708 KB	Output is correct
41	Correct	47 ms	5656 KB	Output is correct
42	Correct	49 ms	5716 KB	Output is correct
43	Correct	47 ms	5708 KB	Output is correct
44	Correct	50 ms	5692 KB	Output is correct
45	Correct	47 ms	5640 KB	Output is correct
46	Correct	51 ms	5688 KB	Output is correct
47	Correct	48 ms	5688 KB	Output is correct
48	Correct	52 ms	5680 KB	Output is correct
49	Correct	55 ms	5760 KB	Output is correct
50	Correct	53 ms	5720 KB	Output is correct
51	Correct	494 ms	23168 KB	Output is correct
52	Correct	468 ms	23192 KB	Output is correct
53	Correct	528 ms	23244 KB	Output is correct
54	Correct	53 ms	5616 KB	Output is correct
55	Correct	46 ms	5616 KB	Output is correct
56	Correct	148 ms	18404 KB	Output is correct
57	Correct	1 ms	204 KB	Output is correct
58	Correct	55 ms	5648 KB	Output is correct
59	Correct	52 ms	5692 KB	Output is correct
60	Correct	548 ms	23188 KB	Output is correct
61	Correct	52 ms	5856 KB	Output is correct
62	Correct	51 ms	5824 KB	Output is correct
63	Correct	52 ms	5636 KB	Output is correct
64	Correct	53 ms	5704 KB	Output is correct
65	Correct	51 ms	5640 KB	Output is correct
66	Correct	53 ms	5716 KB	Output is correct
67	Correct	52 ms	5688 KB	Output is correct
68	Correct	46 ms	5632 KB	Output is correct
69	Correct	55 ms	5688 KB	Output is correct
70	Correct	531 ms	23248 KB	Output is correct
71	Correct	51 ms	5692 KB	Output is correct
72	Correct	474 ms	23208 KB	Output is correct
73	Correct	477 ms	23348 KB	Output is correct
74	Correct	1 ms	204 KB	Output is correct
75	Correct	1 ms	204 KB	Output is correct
76	Correct	1 ms	204 KB	Output is correct
77	Correct	1 ms	204 KB	Output is correct
78	Correct	1 ms	204 KB	Output is correct
79	Correct	6 ms	976 KB	Output is correct
80	Correct	550 ms	22184 KB	Output is correct
81	Correct	551 ms	22372 KB	Output is correct
82	Correct	521 ms	22444 KB	Output is correct
83	Correct	520 ms	22416 KB	Output is correct
84	Correct	525 ms	22392 KB	Output is correct
85	Correct	523 ms	22436 KB	Output is correct
86	Correct	148 ms	18440 KB	Output is correct
87	Correct	1 ms	332 KB	Output is correct

Submission #408957

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