Submission #677775

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
677775	2023-01-04T11:02:29 Z	parsadox2	Strange Device (APIO19_strange_device)	C++14	100 / 100	864 ms	115796 KB

strange_device

#include <bits/stdc++.h>
#define pb 		push_back
#define F		first
#define S 		second
#define debug(x)    cout << #x << "= " << x << ", "
#define ll 		long long
#define fast 		ios::sync_with_stdio(false), cin.tie(0),  cout.tie(0)
#define SZ(x)         (int) x.size()
#define int long long 
using namespace std;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int maxn = 1e6 + 10 , inf = 1e18;
int n , A , B , l[maxn] , r[maxn];
set <pair <int , int> > st;
int gcd(int a , int b)
{
	if(b == 0)
		return a;
	return gcd(b , a % b);
}

void add (int L , int R)
{
	if(st.empty())
	{
		st.insert(make_pair(L , R));
		return;
	}
	auto it = st.upper_bound({L , L});
	if(it != st.begin())
		it--;
	auto v = *it;
	if(v.S < L)
		it++;
	if(it == st.end())
	{
		st.insert({L , R});
		return;
	}
	auto u = *it;
	L = min(u.F , L);
	vector <pair <int, int>> vec;
	while(u.F <= R)
	{
		vec.pb(u);
		it++;
		if(it == st.end())
			break;
		u = *it;
	}
	if(!vec.empty())
	{
		R = max(R , vec.back().S);
	}
	for(auto u : vec)
		st.erase(u);
	st.insert({L , R});
}

int32_t main()
{
	fast;
	cin >> n >> A >> B;
	int S = 0;
	for(int i = 0 ; i < n ; i++)
	{
		cin >> l[i] >> r[i];
		S += r[i] - l[i] + 1;
	}
	int g = gcd(A , B + 1);
	A /= g;
	if(inf / A < B)
	{
		cout << S << endl;
		return 0;
	}
	A *= B;
	for(int i = 0 ; i < n ; i++)
	{
		int tmp = l[i] / A;
		tmp = tmp * A;
		l[i] -= tmp;
		r[i] -= tmp;
		add(l[i] , min(r[i] , A - 1));
		if(r[i] >= A)
		{
			r[i] -= A;
			add(0 , min(A - 1 , r[i]));
		}
	}
	int ans = 0;
	for(auto u : st)
	{
		ans += u.S - u.F + 1;
	}
	cout << ans << endl;
	return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	6 ms	1392 KB	Output is correct
3	Correct	7 ms	1420 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	6 ms	1364 KB	Output is correct
17	Correct	63 ms	11872 KB	Output is correct
18	Correct	1 ms	336 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 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	1 ms	340 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	1 ms	340 KB	Output is correct
3	Correct	1 ms	348 KB	Output is correct
4	Correct	1 ms	388 KB	Output is correct
5	Correct	289 ms	16692 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	769 ms	81680 KB	Output is correct
3	Correct	704 ms	93524 KB	Output is correct
4	Correct	837 ms	101744 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	769 ms	81680 KB	Output is correct
3	Correct	704 ms	93524 KB	Output is correct
4	Correct	837 ms	101744 KB	Output is correct
5	Correct	1 ms	340 KB	Output is correct
6	Correct	675 ms	101684 KB	Output is correct
7	Correct	736 ms	101964 KB	Output is correct
8	Correct	719 ms	101800 KB	Output is correct
9	Correct	854 ms	115728 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	769 ms	81680 KB	Output is correct
3	Correct	704 ms	93524 KB	Output is correct
4	Correct	837 ms	101744 KB	Output is correct
5	Correct	1 ms	336 KB	Output is correct
6	Correct	57 ms	11748 KB	Output is correct
7	Correct	61 ms	11808 KB	Output is correct
8	Correct	62 ms	11788 KB	Output is correct
9	Correct	68 ms	11860 KB	Output is correct
10	Correct	67 ms	11772 KB	Output is correct
11	Correct	58 ms	11824 KB	Output is correct
12	Correct	67 ms	11840 KB	Output is correct
13	Correct	69 ms	11764 KB	Output is correct
14	Correct	70 ms	11780 KB	Output is correct
15	Correct	76 ms	11768 KB	Output is correct
16	Correct	88 ms	11864 KB	Output is correct
17	Correct	68 ms	11764 KB	Output is correct
18	Correct	658 ms	115580 KB	Output is correct
19	Correct	735 ms	102380 KB	Output is correct
20	Correct	821 ms	115688 KB	Output is correct
21	Correct	59 ms	11820 KB	Output is correct
22	Correct	67 ms	11744 KB	Output is correct
23	Correct	127 ms	18304 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	76 ms	11712 KB	Output is correct
3	Correct	69 ms	11828 KB	Output is correct
4	Correct	767 ms	115624 KB	Output is correct
5	Correct	72 ms	11848 KB	Output is correct
6	Correct	75 ms	11788 KB	Output is correct
7	Correct	90 ms	11836 KB	Output is correct
8	Correct	73 ms	11852 KB	Output is correct
9	Correct	70 ms	11864 KB	Output is correct
10	Correct	63 ms	11932 KB	Output is correct
11	Correct	66 ms	11832 KB	Output is correct
12	Correct	80 ms	11772 KB	Output is correct
13	Correct	74 ms	11752 KB	Output is correct
14	Correct	778 ms	115616 KB	Output is correct
15	Correct	56 ms	11192 KB	Output is correct
16	Correct	698 ms	115656 KB	Output is correct
17	Correct	689 ms	115596 KB	Output is correct
18	Correct	0 ms	340 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	6 ms	1392 KB	Output is correct
3	Correct	7 ms	1420 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	0 ms	340 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	1 ms	340 KB	Output is correct
8	Correct	0 ms	340 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	340 KB	Output is correct
11	Correct	0 ms	340 KB	Output is correct
12	Correct	0 ms	340 KB	Output is correct
13	Correct	1 ms	344 KB	Output is correct
14	Correct	1 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	6 ms	1364 KB	Output is correct
17	Correct	63 ms	11872 KB	Output is correct
18	Correct	1 ms	336 KB	Output is correct
19	Correct	1 ms	340 KB	Output is correct
20	Correct	1 ms	340 KB	Output is correct
21	Correct	1 ms	340 KB	Output is correct
22	Correct	1 ms	340 KB	Output is correct
23	Correct	1 ms	340 KB	Output is correct
24	Correct	1 ms	340 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	1 ms	388 KB	Output is correct
28	Correct	289 ms	16692 KB	Output is correct
29	Correct	1 ms	332 KB	Output is correct
30	Correct	769 ms	81680 KB	Output is correct
31	Correct	704 ms	93524 KB	Output is correct
32	Correct	837 ms	101744 KB	Output is correct
33	Correct	1 ms	340 KB	Output is correct
34	Correct	675 ms	101684 KB	Output is correct
35	Correct	736 ms	101964 KB	Output is correct
36	Correct	719 ms	101800 KB	Output is correct
37	Correct	854 ms	115728 KB	Output is correct
38	Correct	1 ms	336 KB	Output is correct
39	Correct	57 ms	11748 KB	Output is correct
40	Correct	61 ms	11808 KB	Output is correct
41	Correct	62 ms	11788 KB	Output is correct
42	Correct	68 ms	11860 KB	Output is correct
43	Correct	67 ms	11772 KB	Output is correct
44	Correct	58 ms	11824 KB	Output is correct
45	Correct	67 ms	11840 KB	Output is correct
46	Correct	69 ms	11764 KB	Output is correct
47	Correct	70 ms	11780 KB	Output is correct
48	Correct	76 ms	11768 KB	Output is correct
49	Correct	88 ms	11864 KB	Output is correct
50	Correct	68 ms	11764 KB	Output is correct
51	Correct	658 ms	115580 KB	Output is correct
52	Correct	735 ms	102380 KB	Output is correct
53	Correct	821 ms	115688 KB	Output is correct
54	Correct	59 ms	11820 KB	Output is correct
55	Correct	67 ms	11744 KB	Output is correct
56	Correct	127 ms	18304 KB	Output is correct
57	Correct	1 ms	340 KB	Output is correct
58	Correct	76 ms	11712 KB	Output is correct
59	Correct	69 ms	11828 KB	Output is correct
60	Correct	767 ms	115624 KB	Output is correct
61	Correct	72 ms	11848 KB	Output is correct
62	Correct	75 ms	11788 KB	Output is correct
63	Correct	90 ms	11836 KB	Output is correct
64	Correct	73 ms	11852 KB	Output is correct
65	Correct	70 ms	11864 KB	Output is correct
66	Correct	63 ms	11932 KB	Output is correct
67	Correct	66 ms	11832 KB	Output is correct
68	Correct	80 ms	11772 KB	Output is correct
69	Correct	74 ms	11752 KB	Output is correct
70	Correct	778 ms	115616 KB	Output is correct
71	Correct	56 ms	11192 KB	Output is correct
72	Correct	698 ms	115656 KB	Output is correct
73	Correct	689 ms	115596 KB	Output is correct
74	Correct	0 ms	340 KB	Output is correct
75	Correct	1 ms	340 KB	Output is correct
76	Correct	0 ms	340 KB	Output is correct
77	Correct	1 ms	340 KB	Output is correct
78	Correct	0 ms	332 KB	Output is correct
79	Correct	6 ms	1380 KB	Output is correct
80	Correct	764 ms	115676 KB	Output is correct
81	Correct	769 ms	115640 KB	Output is correct
82	Correct	841 ms	115796 KB	Output is correct
83	Correct	843 ms	115476 KB	Output is correct
84	Correct	864 ms	115676 KB	Output is correct
85	Correct	760 ms	108460 KB	Output is correct
86	Correct	142 ms	18084 KB	Output is correct
87	Correct	0 ms	340 KB	Output is correct

Submission #677775

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