Submission #591729

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
591729	2022-07-07T19:31:24 Z	piOOE	Strange Device (APIO19_strange_device)	C++17	100 / 100	657 ms	86172 KB

strange_device

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
 
#define all(x) begin(x), end(x)
#define mp make_pair
#define pb push_back
#define sz(x) ((int) size(x))
 
const int infI = 1e9 + 7;
const ll infL = 3e18;
const int N = 1000001;
 
ll L[N], R[N];
 
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;
    ll A, B;
    cin >> A >> B;
    for (int i = 0; i < n; ++i) {
        cin >> L[i] >> R[i];
    }
    ll d = gcd(B + 1, A);
    ll c = A / d;
    if (LLONG_MAX / B <= c) {
        ll ans = 0;
        for (int i = 0; i < n; ++i) {
            ans += R[i] - L[i] + 1;
        }
        cout << ans;
        return 0;
    }
    vector<pair<ll, int>> v;
    ll Z = B * c;
    for (int i = 0; i < n; ++i) {
        if (R[i] / Z == L[i] / Z) {
            v.emplace_back(L[i] % Z, 0);
            v.emplace_back(R[i] % Z, 1);
        } else {
            if ((R[i] - L[i] + 1) / B >= c) {
                cout << Z;
                return 0;
            } else {
                ll nxt = (L[i] + Z - 1) / Z * Z;
                assert(nxt <= R[i]);
                assert(R[i] / Z * Z == nxt);
                v.emplace_back(L[i] % Z, 0);
                v.emplace_back(Z - 1, 1);
                v.emplace_back(0, 0);
                v.emplace_back(R[i] % Z, 1);
            }
        }
    }
    ll last = 0;
    int opened = 0;
    sort(all(v));
    ll ans = 0;
    for (auto [x, t] : v) {
        if (t == 0) {
            ++opened;
            if (opened == 1) {
                last = x;
            }
        } else {
            --opened;
            if (opened == 0) {
                ans += x - last + 1;
            }
        }
    }
    cout << ans;
    return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	5 ms	1496 KB	Output is correct
3	Correct	5 ms	1496 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	352 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	7 ms	1496 KB	Output is correct
17	Correct	68 ms	9756 KB	Output is correct
18	Correct	0 ms	332 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Memory	Grader output
1	Correct	332 KB	Output is correct
2	Correct	212 KB	Output is correct
3	Correct	212 KB	Output is correct
4	Correct	212 KB	Output is correct
5	Correct	212 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 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	344 KB	Output is correct
5	Correct	362 ms	74184 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	542 ms	86088 KB	Output is correct
3	Correct	548 ms	86104 KB	Output is correct
4	Correct	502 ms	86068 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	542 ms	86088 KB	Output is correct
3	Correct	548 ms	86104 KB	Output is correct
4	Correct	502 ms	86068 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	547 ms	86164 KB	Output is correct
7	Correct	508 ms	86172 KB	Output is correct
8	Correct	545 ms	86132 KB	Output is correct
9	Correct	615 ms	86120 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	542 ms	86088 KB	Output is correct
3	Correct	548 ms	86104 KB	Output is correct
4	Correct	502 ms	86068 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	48 ms	9760 KB	Output is correct
7	Correct	59 ms	9788 KB	Output is correct
8	Correct	49 ms	9772 KB	Output is correct
9	Correct	57 ms	9892 KB	Output is correct
10	Correct	48 ms	9796 KB	Output is correct
11	Correct	57 ms	9788 KB	Output is correct
12	Correct	48 ms	9816 KB	Output is correct
13	Correct	61 ms	9756 KB	Output is correct
14	Correct	48 ms	9816 KB	Output is correct
15	Correct	62 ms	9880 KB	Output is correct
16	Correct	54 ms	9764 KB	Output is correct
17	Correct	53 ms	9756 KB	Output is correct
18	Correct	563 ms	86068 KB	Output is correct
19	Correct	498 ms	86048 KB	Output is correct
20	Correct	615 ms	86148 KB	Output is correct
21	Correct	56 ms	9768 KB	Output is correct
22	Correct	48 ms	9844 KB	Output is correct
23	Correct	146 ms	34732 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	328 KB	Output is correct
2	Correct	53 ms	9824 KB	Output is correct
3	Correct	58 ms	9764 KB	Output is correct
4	Correct	657 ms	86136 KB	Output is correct
5	Correct	55 ms	9804 KB	Output is correct
6	Correct	74 ms	9820 KB	Output is correct
7	Correct	62 ms	9820 KB	Output is correct
8	Correct	56 ms	9796 KB	Output is correct
9	Correct	55 ms	9804 KB	Output is correct
10	Correct	59 ms	9760 KB	Output is correct
11	Correct	54 ms	9748 KB	Output is correct
12	Correct	46 ms	9840 KB	Output is correct
13	Correct	67 ms	9896 KB	Output is correct
14	Correct	592 ms	86052 KB	Output is correct
15	Correct	71 ms	9752 KB	Output is correct
16	Correct	483 ms	86048 KB	Output is correct
17	Correct	531 ms	86132 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct

Subtask #8
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	332 KB	Output is correct
2	Correct	5 ms	1496 KB	Output is correct
3	Correct	5 ms	1496 KB	Output is correct
4	Correct	0 ms	340 KB	Output is correct
5	Correct	1 ms	332 KB	Output is correct
6	Correct	0 ms	340 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	1 ms	340 KB	Output is correct
9	Correct	0 ms	340 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	352 KB	Output is correct
14	Correct	0 ms	340 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	7 ms	1496 KB	Output is correct
17	Correct	68 ms	9756 KB	Output is correct
18	Correct	0 ms	332 KB	Output is correct
19	Correct	0 ms	332 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	0 ms	212 KB	Output is correct
22	Correct	0 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	1 ms	332 KB	Output is correct
25	Correct	1 ms	340 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	344 KB	Output is correct
28	Correct	362 ms	74184 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	542 ms	86088 KB	Output is correct
31	Correct	548 ms	86104 KB	Output is correct
32	Correct	502 ms	86068 KB	Output is correct
33	Correct	0 ms	212 KB	Output is correct
34	Correct	547 ms	86164 KB	Output is correct
35	Correct	508 ms	86172 KB	Output is correct
36	Correct	545 ms	86132 KB	Output is correct
37	Correct	615 ms	86120 KB	Output is correct
38	Correct	0 ms	212 KB	Output is correct
39	Correct	48 ms	9760 KB	Output is correct
40	Correct	59 ms	9788 KB	Output is correct
41	Correct	49 ms	9772 KB	Output is correct
42	Correct	57 ms	9892 KB	Output is correct
43	Correct	48 ms	9796 KB	Output is correct
44	Correct	57 ms	9788 KB	Output is correct
45	Correct	48 ms	9816 KB	Output is correct
46	Correct	61 ms	9756 KB	Output is correct
47	Correct	48 ms	9816 KB	Output is correct
48	Correct	62 ms	9880 KB	Output is correct
49	Correct	54 ms	9764 KB	Output is correct
50	Correct	53 ms	9756 KB	Output is correct
51	Correct	563 ms	86068 KB	Output is correct
52	Correct	498 ms	86048 KB	Output is correct
53	Correct	615 ms	86148 KB	Output is correct
54	Correct	56 ms	9768 KB	Output is correct
55	Correct	48 ms	9844 KB	Output is correct
56	Correct	146 ms	34732 KB	Output is correct
57	Correct	0 ms	328 KB	Output is correct
58	Correct	53 ms	9824 KB	Output is correct
59	Correct	58 ms	9764 KB	Output is correct
60	Correct	657 ms	86136 KB	Output is correct
61	Correct	55 ms	9804 KB	Output is correct
62	Correct	74 ms	9820 KB	Output is correct
63	Correct	62 ms	9820 KB	Output is correct
64	Correct	56 ms	9796 KB	Output is correct
65	Correct	55 ms	9804 KB	Output is correct
66	Correct	59 ms	9760 KB	Output is correct
67	Correct	54 ms	9748 KB	Output is correct
68	Correct	46 ms	9840 KB	Output is correct
69	Correct	67 ms	9896 KB	Output is correct
70	Correct	592 ms	86052 KB	Output is correct
71	Correct	71 ms	9752 KB	Output is correct
72	Correct	483 ms	86048 KB	Output is correct
73	Correct	531 ms	86132 KB	Output is correct
74	Correct	0 ms	212 KB	Output is correct
75	Correct	1 ms	328 KB	Output is correct
76	Correct	1 ms	212 KB	Output is correct
77	Correct	0 ms	212 KB	Output is correct
78	Correct	1 ms	212 KB	Output is correct
79	Correct	5 ms	1496 KB	Output is correct
80	Correct	618 ms	86032 KB	Output is correct
81	Correct	639 ms	86040 KB	Output is correct
82	Correct	597 ms	86144 KB	Output is correct
83	Correct	618 ms	86128 KB	Output is correct
84	Correct	590 ms	86080 KB	Output is correct
85	Correct	588 ms	86068 KB	Output is correct
86	Correct	141 ms	34748 KB	Output is correct
87	Correct	1 ms	340 KB	Output is correct

Submission #591729

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