Submission #156928

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
156928	2019-10-08T10:41:12 Z	popovicirobert	Strange Device (APIO19_strange_device)	C++14	100 / 100	770 ms	53456 KB

strange_device

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define lsb(x) (x & (-x)) 
    
using namespace std;

const ll INF = 1e18 + 5;

inline ll gcd(ll a, ll b) {
	while(b > 0) {
		ll r = a % b;
		a = b;
		b = r;
	}
	return a;
}
   
int main() {
#if 0
    ifstream cin("A.in");
    ofstream cout("A.out");
#endif
    int n, i;
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
	
	ll a, b;
	cin >> n >> a >> b;
	ll g = gcd(a, b + 1), per = INF;
	if(a / g <= INF / b) {
		per = (a / g);
		per *= b;
	}
	

	vector < pair <ll, ll> > segm;
	for(i = 0; i < n; i++) {
		ll l, r;
		cin >> l >> r;
		if(r - l + 1 >= per) {
			cout << per;
			return 0;
		}
		if(l == r) {
			l %= per, r %= per;
			segm.push_back({l, r});
		}
		else {
			l %= per, r %= per;
			if(l >= r) {
				segm.push_back({l, per - 1});
				segm.push_back({0, r});
			}
			else {
				segm.push_back({l, r});
			}
		}
	}
	sort(segm.begin(), segm.end(), [&](const pair <ll, ll> &x, const pair <ll, ll> &y) {
				if(x.first == y.first) return x.second > y.second;
				return x.first < y.first;
		});

	ll last = -1, ans = 0;
	for(auto &it : segm) {
		if(last < it.first) {
			ans += it.second - it.first + 1;
			last = it.second;
		}
		else if(it.second >= last) {
			ans += it.second - last;
			last = it.second;
		}
	}
	cout << ans;
		
	return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	8 ms	892 KB	Output is correct
3	Correct	8 ms	888 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	8 ms	1144 KB	Output is correct
17	Correct	73 ms	5684 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	380 KB	Output is correct
2	Correct	2 ms	376 KB	Output is correct
3	Correct	2 ms	376 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	376 KB	Output is correct
3	Correct	3 ms	380 KB	Output is correct
4	Correct	3 ms	376 KB	Output is correct
5	Correct	461 ms	16900 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	641 ms	16900 KB	Output is correct
3	Correct	657 ms	53248 KB	Output is correct
4	Correct	646 ms	53440 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	641 ms	16900 KB	Output is correct
3	Correct	657 ms	53248 KB	Output is correct
4	Correct	646 ms	53440 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	649 ms	53212 KB	Output is correct
7	Correct	659 ms	53436 KB	Output is correct
8	Correct	650 ms	53456 KB	Output is correct
9	Correct	736 ms	53152 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	641 ms	16900 KB	Output is correct
3	Correct	657 ms	53248 KB	Output is correct
4	Correct	646 ms	53440 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	64 ms	5736 KB	Output is correct
7	Correct	68 ms	5736 KB	Output is correct
8	Correct	65 ms	5736 KB	Output is correct
9	Correct	67 ms	5712 KB	Output is correct
10	Correct	63 ms	5708 KB	Output is correct
11	Correct	67 ms	5736 KB	Output is correct
12	Correct	64 ms	5736 KB	Output is correct
13	Correct	74 ms	5736 KB	Output is correct
14	Correct	67 ms	5736 KB	Output is correct
15	Correct	74 ms	5744 KB	Output is correct
16	Correct	71 ms	5956 KB	Output is correct
17	Correct	67 ms	5760 KB	Output is correct
18	Correct	667 ms	53392 KB	Output is correct
19	Correct	640 ms	53228 KB	Output is correct
20	Correct	738 ms	53156 KB	Output is correct
21	Correct	70 ms	5736 KB	Output is correct
22	Correct	67 ms	5868 KB	Output is correct
23	Correct	209 ms	18544 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	69 ms	5800 KB	Output is correct
3	Correct	72 ms	5708 KB	Output is correct
4	Correct	756 ms	18300 KB	Output is correct
5	Correct	72 ms	5736 KB	Output is correct
6	Correct	72 ms	5736 KB	Output is correct
7	Correct	73 ms	5784 KB	Output is correct
8	Correct	73 ms	5796 KB	Output is correct
9	Correct	69 ms	5708 KB	Output is correct
10	Correct	70 ms	5756 KB	Output is correct
11	Correct	70 ms	5800 KB	Output is correct
12	Correct	62 ms	5740 KB	Output is correct
13	Correct	71 ms	5736 KB	Output is correct
14	Correct	722 ms	18128 KB	Output is correct
15	Correct	69 ms	5868 KB	Output is correct
16	Correct	643 ms	52720 KB	Output is correct
17	Correct	636 ms	53328 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct

Subtask #8
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	8 ms	892 KB	Output is correct
3	Correct	8 ms	888 KB	Output is correct
4	Correct	2 ms	376 KB	Output is correct
5	Correct	2 ms	376 KB	Output is correct
6	Correct	2 ms	376 KB	Output is correct
7	Correct	2 ms	376 KB	Output is correct
8	Correct	2 ms	376 KB	Output is correct
9	Correct	2 ms	376 KB	Output is correct
10	Correct	2 ms	376 KB	Output is correct
11	Correct	2 ms	376 KB	Output is correct
12	Correct	2 ms	376 KB	Output is correct
13	Correct	2 ms	376 KB	Output is correct
14	Correct	2 ms	376 KB	Output is correct
15	Correct	2 ms	376 KB	Output is correct
16	Correct	8 ms	1144 KB	Output is correct
17	Correct	73 ms	5684 KB	Output is correct
18	Correct	2 ms	376 KB	Output is correct
19	Correct	2 ms	380 KB	Output is correct
20	Correct	2 ms	376 KB	Output is correct
21	Correct	2 ms	376 KB	Output is correct
22	Correct	2 ms	376 KB	Output is correct
23	Correct	2 ms	376 KB	Output is correct
24	Correct	2 ms	376 KB	Output is correct
25	Correct	3 ms	376 KB	Output is correct
26	Correct	3 ms	380 KB	Output is correct
27	Correct	3 ms	376 KB	Output is correct
28	Correct	461 ms	16900 KB	Output is correct
29	Correct	2 ms	376 KB	Output is correct
30	Correct	641 ms	16900 KB	Output is correct
31	Correct	657 ms	53248 KB	Output is correct
32	Correct	646 ms	53440 KB	Output is correct
33	Correct	2 ms	376 KB	Output is correct
34	Correct	649 ms	53212 KB	Output is correct
35	Correct	659 ms	53436 KB	Output is correct
36	Correct	650 ms	53456 KB	Output is correct
37	Correct	736 ms	53152 KB	Output is correct
38	Correct	2 ms	376 KB	Output is correct
39	Correct	64 ms	5736 KB	Output is correct
40	Correct	68 ms	5736 KB	Output is correct
41	Correct	65 ms	5736 KB	Output is correct
42	Correct	67 ms	5712 KB	Output is correct
43	Correct	63 ms	5708 KB	Output is correct
44	Correct	67 ms	5736 KB	Output is correct
45	Correct	64 ms	5736 KB	Output is correct
46	Correct	74 ms	5736 KB	Output is correct
47	Correct	67 ms	5736 KB	Output is correct
48	Correct	74 ms	5744 KB	Output is correct
49	Correct	71 ms	5956 KB	Output is correct
50	Correct	67 ms	5760 KB	Output is correct
51	Correct	667 ms	53392 KB	Output is correct
52	Correct	640 ms	53228 KB	Output is correct
53	Correct	738 ms	53156 KB	Output is correct
54	Correct	70 ms	5736 KB	Output is correct
55	Correct	67 ms	5868 KB	Output is correct
56	Correct	209 ms	18544 KB	Output is correct
57	Correct	2 ms	376 KB	Output is correct
58	Correct	69 ms	5800 KB	Output is correct
59	Correct	72 ms	5708 KB	Output is correct
60	Correct	756 ms	18300 KB	Output is correct
61	Correct	72 ms	5736 KB	Output is correct
62	Correct	72 ms	5736 KB	Output is correct
63	Correct	73 ms	5784 KB	Output is correct
64	Correct	73 ms	5796 KB	Output is correct
65	Correct	69 ms	5708 KB	Output is correct
66	Correct	70 ms	5756 KB	Output is correct
67	Correct	70 ms	5800 KB	Output is correct
68	Correct	62 ms	5740 KB	Output is correct
69	Correct	71 ms	5736 KB	Output is correct
70	Correct	722 ms	18128 KB	Output is correct
71	Correct	69 ms	5868 KB	Output is correct
72	Correct	643 ms	52720 KB	Output is correct
73	Correct	636 ms	53328 KB	Output is correct
74	Correct	2 ms	376 KB	Output is correct
75	Correct	2 ms	380 KB	Output is correct
76	Correct	2 ms	376 KB	Output is correct
77	Correct	2 ms	376 KB	Output is correct
78	Correct	2 ms	376 KB	Output is correct
79	Correct	8 ms	1144 KB	Output is correct
80	Correct	754 ms	53252 KB	Output is correct
81	Correct	770 ms	53264 KB	Output is correct
82	Correct	730 ms	53156 KB	Output is correct
83	Correct	732 ms	53348 KB	Output is correct
84	Correct	743 ms	53348 KB	Output is correct
85	Correct	752 ms	52800 KB	Output is correct
86	Correct	199 ms	18500 KB	Output is correct
87	Correct	2 ms	376 KB	Output is correct

Submission #156928

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