Submission #879353

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
879353	2023-11-27T07:43:55 Z	Fake4Fun	Strange Device (APIO19_strange_device)	C++14	100 / 100	374 ms	71848 KB

strange_device

#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int N = 1e6 + 5;
const ll oo = 1e18 + 10;
int n;
ll A, B;
ll l[N], r[N];
ll GCD(ll A, ll B) {
    if (A < B) swap(A, B);
    while (B) {
        A %= B;
        swap(A, B);
    }
    return A;
}
int main() {
    cin.tie(0) -> sync_with_stdio(0);
    cin >> n >> A >> B;
    for (int i = 1; i <= n; i++) cin >> l[i] >> r[i];
    ll temp = (B + 1) % A;
    ll diff;
    if (!temp) diff = B;
    else {
        ll gcd = GCD(temp, A);
        temp = A / gcd;
        if (oo / temp < B) diff = oo;
        else diff = temp * B;
    }
    if (diff == oo) {
        ll ans = 0;
        for (int i = 1; i <= n; i++) ans += r[i] - l[i] + 1;
        cout << ans;
    }
    else {
        #define pa pair<ll, ll>
        #define fi first
        #define se second
        vector<pa> v;
        for (int i = 1; i <= n; i++) {
            ll L = l[i] % diff, R = r[i] % diff;
            ll hL = l[i] / diff, hR = r[i] / diff;
            if (hR - hL > 2 || (hR - hL == 1 && R >= L - 1))
                return cout << diff, 0;
            if (hR == hL) v.emplace_back(L, R);
            else {
                v.emplace_back(L, diff - 1);
                v.emplace_back(0, R);
            }
        }
        sort(begin(v), end(v));
        ll curL = 0, curR = -1;
        ll ans = 0;
        for (auto i: v) {
            if (i.fi > curR) {
                ans += curR - curL + 1;
                curR = i.se;
                curL = i.fi;
            }
            else curR = max(curR, i.se);
        }
        ans += curR - curL + 1;
        cout << ans;
    }

    return 0;
}

Subtask #1
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	4 ms	3164 KB	Output is correct
3	Correct	4 ms	3164 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2512 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2400 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	4 ms	3164 KB	Output is correct
17	Correct	57 ms	12500 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2508 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	212 ms	58336 KB	Output is correct

Subtask #4
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	324 ms	71640 KB	Output is correct
3	Correct	327 ms	70624 KB	Output is correct
4	Correct	300 ms	70748 KB	Output is correct

Subtask #5
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	324 ms	71640 KB	Output is correct
3	Correct	327 ms	70624 KB	Output is correct
4	Correct	300 ms	70748 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	323 ms	71656 KB	Output is correct
7	Correct	339 ms	69656 KB	Output is correct
8	Correct	341 ms	69828 KB	Output is correct
9	Correct	345 ms	69780 KB	Output is correct

Subtask #6
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	324 ms	71640 KB	Output is correct
3	Correct	327 ms	70624 KB	Output is correct
4	Correct	300 ms	70748 KB	Output is correct
5	Correct	0 ms	2396 KB	Output is correct
6	Correct	32 ms	12496 KB	Output is correct
7	Correct	35 ms	12516 KB	Output is correct
8	Correct	45 ms	12644 KB	Output is correct
9	Correct	31 ms	12496 KB	Output is correct
10	Correct	46 ms	12516 KB	Output is correct
11	Correct	32 ms	12516 KB	Output is correct
12	Correct	30 ms	12496 KB	Output is correct
13	Correct	36 ms	12496 KB	Output is correct
14	Correct	34 ms	12496 KB	Output is correct
15	Correct	34 ms	12448 KB	Output is correct
16	Correct	37 ms	12528 KB	Output is correct
17	Correct	31 ms	12496 KB	Output is correct
18	Correct	312 ms	69856 KB	Output is correct
19	Correct	334 ms	70752 KB	Output is correct
20	Correct	354 ms	71132 KB	Output is correct
21	Correct	34 ms	12496 KB	Output is correct
22	Correct	31 ms	12768 KB	Output is correct
23	Correct	108 ms	31716 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	36 ms	12524 KB	Output is correct
3	Correct	55 ms	12512 KB	Output is correct
4	Correct	362 ms	69664 KB	Output is correct
5	Correct	40 ms	13008 KB	Output is correct
6	Correct	33 ms	12904 KB	Output is correct
7	Correct	42 ms	12496 KB	Output is correct
8	Correct	36 ms	12496 KB	Output is correct
9	Correct	34 ms	12652 KB	Output is correct
10	Correct	42 ms	12652 KB	Output is correct
11	Correct	34 ms	12664 KB	Output is correct
12	Correct	30 ms	12480 KB	Output is correct
13	Correct	36 ms	7844 KB	Output is correct
14	Correct	356 ms	69700 KB	Output is correct
15	Correct	34 ms	7816 KB	Output is correct
16	Correct	342 ms	69480 KB	Output is correct
17	Correct	337 ms	70108 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct

Subtask #8
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	4 ms	3164 KB	Output is correct
3	Correct	4 ms	3164 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2396 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	1 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2512 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2396 KB	Output is correct
13	Correct	1 ms	2396 KB	Output is correct
14	Correct	1 ms	2400 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	4 ms	3164 KB	Output is correct
17	Correct	57 ms	12500 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	1 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2508 KB	Output is correct
22	Correct	1 ms	2396 KB	Output is correct
23	Correct	1 ms	2396 KB	Output is correct
24	Correct	1 ms	2396 KB	Output is correct
25	Correct	1 ms	2396 KB	Output is correct
26	Correct	1 ms	2396 KB	Output is correct
27	Correct	1 ms	2396 KB	Output is correct
28	Correct	212 ms	58336 KB	Output is correct
29	Correct	1 ms	2396 KB	Output is correct
30	Correct	324 ms	71640 KB	Output is correct
31	Correct	327 ms	70624 KB	Output is correct
32	Correct	300 ms	70748 KB	Output is correct
33	Correct	1 ms	2396 KB	Output is correct
34	Correct	323 ms	71656 KB	Output is correct
35	Correct	339 ms	69656 KB	Output is correct
36	Correct	341 ms	69828 KB	Output is correct
37	Correct	345 ms	69780 KB	Output is correct
38	Correct	0 ms	2396 KB	Output is correct
39	Correct	32 ms	12496 KB	Output is correct
40	Correct	35 ms	12516 KB	Output is correct
41	Correct	45 ms	12644 KB	Output is correct
42	Correct	31 ms	12496 KB	Output is correct
43	Correct	46 ms	12516 KB	Output is correct
44	Correct	32 ms	12516 KB	Output is correct
45	Correct	30 ms	12496 KB	Output is correct
46	Correct	36 ms	12496 KB	Output is correct
47	Correct	34 ms	12496 KB	Output is correct
48	Correct	34 ms	12448 KB	Output is correct
49	Correct	37 ms	12528 KB	Output is correct
50	Correct	31 ms	12496 KB	Output is correct
51	Correct	312 ms	69856 KB	Output is correct
52	Correct	334 ms	70752 KB	Output is correct
53	Correct	354 ms	71132 KB	Output is correct
54	Correct	34 ms	12496 KB	Output is correct
55	Correct	31 ms	12768 KB	Output is correct
56	Correct	108 ms	31716 KB	Output is correct
57	Correct	1 ms	2396 KB	Output is correct
58	Correct	36 ms	12524 KB	Output is correct
59	Correct	55 ms	12512 KB	Output is correct
60	Correct	362 ms	69664 KB	Output is correct
61	Correct	40 ms	13008 KB	Output is correct
62	Correct	33 ms	12904 KB	Output is correct
63	Correct	42 ms	12496 KB	Output is correct
64	Correct	36 ms	12496 KB	Output is correct
65	Correct	34 ms	12652 KB	Output is correct
66	Correct	42 ms	12652 KB	Output is correct
67	Correct	34 ms	12664 KB	Output is correct
68	Correct	30 ms	12480 KB	Output is correct
69	Correct	36 ms	7844 KB	Output is correct
70	Correct	356 ms	69700 KB	Output is correct
71	Correct	34 ms	7816 KB	Output is correct
72	Correct	342 ms	69480 KB	Output is correct
73	Correct	337 ms	70108 KB	Output is correct
74	Correct	1 ms	2396 KB	Output is correct
75	Correct	1 ms	2396 KB	Output is correct
76	Correct	1 ms	2396 KB	Output is correct
77	Correct	1 ms	2396 KB	Output is correct
78	Correct	1 ms	2396 KB	Output is correct
79	Correct	4 ms	3164 KB	Output is correct
80	Correct	374 ms	70336 KB	Output is correct
81	Correct	366 ms	70084 KB	Output is correct
82	Correct	356 ms	71392 KB	Output is correct
83	Correct	345 ms	71848 KB	Output is correct
84	Correct	333 ms	69828 KB	Output is correct
85	Correct	342 ms	71500 KB	Output is correct
86	Correct	110 ms	32712 KB	Output is correct
87	Correct	1 ms	2396 KB	Output is correct

Submission #879353

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