Submission #230059

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
230059	2020-05-07T23:40:59 Z	AMO5	Strange Device (APIO19_strange_device)	C++	100 / 100	599 ms	37460 KB

strange_device

// READ & UNDERSTAND
// ll, int overflow, array bounds, memset(0)
// special cases (n=1?), n+1 (1-index)
// do smth instead of nothing & stay organized
// WRITE STUFF DOWN

#include <bits/stdc++.h>

using namespace std;

#define fi first
#define se second
#define pb push_back
#define all(x) (x).begin(), (x).end() 
#define MOD 1000000007

typedef long long ll;
typedef pair <int, int> ii;
typedef pair <ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef long double ld;

ll INF=LLONG_MAX;

int const mxn=1e6+5;
ll const MAX=1e18+10;

ll l[mxn],r[mxn];

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    //freopen("input.txt","r",stdin); freopen("output.txt","w",stdout);
	ll n,a,b;
	cin >> n >> a >> b;
	ll gcd = __gcd(a,b+1); 
	ll maxi = a/gcd;
	if(__lg(a)+__lg(b)>60){
		maxi = MAX;
	}else{
		maxi = min(maxi*b,MAX);
	}
	bool all=0;
	vector<pll>seg;
	for(int i=0; i<n; i++){
		cin >> l[i] >> r[i];
		if(r[i]-l[i]+1>=maxi)all=1;
		l[i]%=maxi; r[i]%=maxi;
		if(r[i]>=l[i]){
			seg.emplace_back(pll(l[i],r[i]));
		}else{
			seg.emplace_back(pll((ll)0,r[i]));
			seg.emplace_back(pll(l[i],ll(maxi-1)));
		}
	}
	if(all){
		cout << maxi << endl;
		return 0;
	}
	sort(all(seg));
	ll ans = 0;
	ll cur = 0;
	for(int i=0; i<(int)seg.size(); i++){
		ans += max(ll(0),seg[i].se+1-max(seg[i].fi,cur));
		cur = max(seg[i].se+1,cur);
	}
	cout << ans << endl;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	10 ms	1280 KB	Output is correct
3	Correct	10 ms	1280 KB	Output is correct
4	Correct	4 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	4 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	304 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	4 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	10 ms	1280 KB	Output is correct
17	Correct	60 ms	4076 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	4 ms	384 KB	Output is correct
4	Correct	4 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	5 ms	384 KB	Output is correct
5	Correct	392 ms	32196 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	526 ms	32344 KB	Output is correct
3	Correct	517 ms	32320 KB	Output is correct
4	Correct	497 ms	32192 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	526 ms	32344 KB	Output is correct
3	Correct	517 ms	32320 KB	Output is correct
4	Correct	497 ms	32192 KB	Output is correct
5	Correct	5 ms	512 KB	Output is correct
6	Correct	523 ms	32192 KB	Output is correct
7	Correct	519 ms	32196 KB	Output is correct
8	Correct	511 ms	32196 KB	Output is correct
9	Correct	557 ms	32192 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	526 ms	32344 KB	Output is correct
3	Correct	517 ms	32320 KB	Output is correct
4	Correct	497 ms	32192 KB	Output is correct
5	Correct	5 ms	384 KB	Output is correct
6	Correct	56 ms	4072 KB	Output is correct
7	Correct	66 ms	4204 KB	Output is correct
8	Correct	54 ms	3952 KB	Output is correct
9	Correct	55 ms	4076 KB	Output is correct
10	Correct	54 ms	3960 KB	Output is correct
11	Correct	56 ms	3952 KB	Output is correct
12	Correct	54 ms	4076 KB	Output is correct
13	Correct	68 ms	3996 KB	Output is correct
14	Correct	54 ms	4076 KB	Output is correct
15	Correct	60 ms	4084 KB	Output is correct
16	Correct	58 ms	3952 KB	Output is correct
17	Correct	55 ms	3952 KB	Output is correct
18	Correct	526 ms	32320 KB	Output is correct
19	Correct	499 ms	32192 KB	Output is correct
20	Correct	569 ms	32196 KB	Output is correct
21	Correct	58 ms	3952 KB	Output is correct
22	Correct	55 ms	3948 KB	Output is correct
23	Correct	163 ms	13284 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	60 ms	4072 KB	Output is correct
3	Correct	59 ms	4128 KB	Output is correct
4	Correct	595 ms	32280 KB	Output is correct
5	Correct	57 ms	3952 KB	Output is correct
6	Correct	57 ms	3952 KB	Output is correct
7	Correct	58 ms	3952 KB	Output is correct
8	Correct	60 ms	4072 KB	Output is correct
9	Correct	58 ms	3952 KB	Output is correct
10	Correct	59 ms	3960 KB	Output is correct
11	Correct	58 ms	3824 KB	Output is correct
12	Correct	54 ms	3828 KB	Output is correct
13	Correct	58 ms	3824 KB	Output is correct
14	Correct	561 ms	32196 KB	Output is correct
15	Correct	59 ms	3824 KB	Output is correct
16	Correct	519 ms	32168 KB	Output is correct
17	Correct	500 ms	32192 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct

Subtask #8
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	384 KB	Output is correct
2	Correct	10 ms	1280 KB	Output is correct
3	Correct	10 ms	1280 KB	Output is correct
4	Correct	4 ms	384 KB	Output is correct
5	Correct	4 ms	384 KB	Output is correct
6	Correct	5 ms	384 KB	Output is correct
7	Correct	5 ms	384 KB	Output is correct
8	Correct	5 ms	384 KB	Output is correct
9	Correct	4 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	5 ms	384 KB	Output is correct
12	Correct	5 ms	304 KB	Output is correct
13	Correct	5 ms	384 KB	Output is correct
14	Correct	4 ms	384 KB	Output is correct
15	Correct	5 ms	384 KB	Output is correct
16	Correct	10 ms	1280 KB	Output is correct
17	Correct	60 ms	4076 KB	Output is correct
18	Correct	5 ms	384 KB	Output is correct
19	Correct	5 ms	384 KB	Output is correct
20	Correct	5 ms	384 KB	Output is correct
21	Correct	4 ms	384 KB	Output is correct
22	Correct	4 ms	384 KB	Output is correct
23	Correct	4 ms	384 KB	Output is correct
24	Correct	5 ms	384 KB	Output is correct
25	Correct	5 ms	384 KB	Output is correct
26	Correct	5 ms	384 KB	Output is correct
27	Correct	5 ms	384 KB	Output is correct
28	Correct	392 ms	32196 KB	Output is correct
29	Correct	5 ms	384 KB	Output is correct
30	Correct	526 ms	32344 KB	Output is correct
31	Correct	517 ms	32320 KB	Output is correct
32	Correct	497 ms	32192 KB	Output is correct
33	Correct	5 ms	512 KB	Output is correct
34	Correct	523 ms	32192 KB	Output is correct
35	Correct	519 ms	32196 KB	Output is correct
36	Correct	511 ms	32196 KB	Output is correct
37	Correct	557 ms	32192 KB	Output is correct
38	Correct	5 ms	384 KB	Output is correct
39	Correct	56 ms	4072 KB	Output is correct
40	Correct	66 ms	4204 KB	Output is correct
41	Correct	54 ms	3952 KB	Output is correct
42	Correct	55 ms	4076 KB	Output is correct
43	Correct	54 ms	3960 KB	Output is correct
44	Correct	56 ms	3952 KB	Output is correct
45	Correct	54 ms	4076 KB	Output is correct
46	Correct	68 ms	3996 KB	Output is correct
47	Correct	54 ms	4076 KB	Output is correct
48	Correct	60 ms	4084 KB	Output is correct
49	Correct	58 ms	3952 KB	Output is correct
50	Correct	55 ms	3952 KB	Output is correct
51	Correct	526 ms	32320 KB	Output is correct
52	Correct	499 ms	32192 KB	Output is correct
53	Correct	569 ms	32196 KB	Output is correct
54	Correct	58 ms	3952 KB	Output is correct
55	Correct	55 ms	3948 KB	Output is correct
56	Correct	163 ms	13284 KB	Output is correct
57	Correct	5 ms	384 KB	Output is correct
58	Correct	60 ms	4072 KB	Output is correct
59	Correct	59 ms	4128 KB	Output is correct
60	Correct	595 ms	32280 KB	Output is correct
61	Correct	57 ms	3952 KB	Output is correct
62	Correct	57 ms	3952 KB	Output is correct
63	Correct	58 ms	3952 KB	Output is correct
64	Correct	60 ms	4072 KB	Output is correct
65	Correct	58 ms	3952 KB	Output is correct
66	Correct	59 ms	3960 KB	Output is correct
67	Correct	58 ms	3824 KB	Output is correct
68	Correct	54 ms	3828 KB	Output is correct
69	Correct	58 ms	3824 KB	Output is correct
70	Correct	561 ms	32196 KB	Output is correct
71	Correct	59 ms	3824 KB	Output is correct
72	Correct	519 ms	32168 KB	Output is correct
73	Correct	500 ms	32192 KB	Output is correct
74	Correct	5 ms	384 KB	Output is correct
75	Correct	4 ms	384 KB	Output is correct
76	Correct	5 ms	384 KB	Output is correct
77	Correct	5 ms	384 KB	Output is correct
78	Correct	5 ms	384 KB	Output is correct
79	Correct	9 ms	1280 KB	Output is correct
80	Correct	596 ms	37260 KB	Output is correct
81	Correct	599 ms	37312 KB	Output is correct
82	Correct	570 ms	37184 KB	Output is correct
83	Correct	552 ms	37460 KB	Output is correct
84	Correct	553 ms	37184 KB	Output is correct
85	Correct	573 ms	37188 KB	Output is correct
86	Correct	172 ms	23768 KB	Output is correct
87	Correct	5 ms	384 KB	Output is correct

Submission #230059

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