Submission #655087

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
655087	2022-11-03T02:08:05 Z	DeMen100ns	Strange Device (APIO19_strange_device)	C++17	100 / 100	468 ms	53220 KB

strange_device

/*
Author : DeMen100ns (a.k.a Vo Khac Trieu)
School : VNU-HCM High school for the Gifted
fuck you adhoc
*/

#include <bits/stdc++.h>

#define int long long

using namespace std;

const int N = 2e5 + 5;
const long long INF = 5e18 + 7;
const int MAXA = 1e9;
const int B = sqrt(N) + 5;

int lcm(int a, int b){
    int ans = a / __gcd(a, b);
    if (INF / ans < b){
        return INF;
    }
    return ans * b;
}

int calperiod(int A, int B){
    /*for(int i = 1; i <= 1000; ++i){
        if ((i + i / B) % A == 0 && i % B == 0) return i;
    }*/
    //lcm(B + 1, A)...

    int g = lcm(B + 1, A);
    if (g == INF) return INF;

    return (g / (B + 1)) * B;
}

void solve()
{
    int n, A, B; cin >> n >> A >> B;
    int g = calperiod(A, B);

    vector <pair<int, int>> range;
    for(int i = 1; i <= n; ++i){
        int x, y; cin >> x >> y;

        if (y - x + 1 >= g){
            cout << g << endl;
            return;
        }

        x %= g; y %= g;
        if (x <= y) range.push_back({x, y});
        else{
            range.push_back({x, g - 1});
            range.push_back({0, y});
        }
    }
    sort(range.begin(), range.end());

    int ans = range[0].second - range[0].first + 1;
    int r = range[0].second;

    for(int i = 1; i < (int)range.size(); ++i){
        if (range[i].second > r){
            if (range[i].first > r){
                ans += range[i].second - range[i].first + 1;
            } else {
                ans += range[i].second - r;
            }
            r = range[i].second;
        }
    }
    cout << ans;
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    // freopen("codeforces.inp","r",stdin);
    // freopen("codeforces.out","w",stdout);

    int t = 1; // cin >> t;
    while (t--)
    {
        solve();
    }
}

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	1088 KB	Output is correct
3	Correct	6 ms	992 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	316 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	320 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	6 ms	1056 KB	Output is correct
17	Correct	42 ms	3528 KB	Output is correct
18	Correct	1 ms	320 KB	Output is correct

Subtask #2
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	1 ms	316 KB	Output is correct
5	Correct	1 ms	320 KB	Output is correct

Subtask #3
5.0 / 5.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	1 ms	320 KB	Output is correct
3	Correct	1 ms	340 KB	Output is correct
4	Correct	1 ms	340 KB	Output is correct
5	Correct	273 ms	16900 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	380 ms	16864 KB	Output is correct
3	Correct	375 ms	17280 KB	Output is correct
4	Correct	373 ms	17364 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	380 ms	16864 KB	Output is correct
3	Correct	375 ms	17280 KB	Output is correct
4	Correct	373 ms	17364 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	382 ms	17412 KB	Output is correct
7	Correct	369 ms	16820 KB	Output is correct
8	Correct	370 ms	16988 KB	Output is correct
9	Correct	419 ms	17272 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	380 ms	16864 KB	Output is correct
3	Correct	375 ms	17280 KB	Output is correct
4	Correct	373 ms	17364 KB	Output is correct
5	Correct	0 ms	320 KB	Output is correct
6	Correct	37 ms	3524 KB	Output is correct
7	Correct	41 ms	3464 KB	Output is correct
8	Correct	38 ms	3524 KB	Output is correct
9	Correct	39 ms	3428 KB	Output is correct
10	Correct	39 ms	3372 KB	Output is correct
11	Correct	38 ms	3340 KB	Output is correct
12	Correct	37 ms	3328 KB	Output is correct
13	Correct	40 ms	3408 KB	Output is correct
14	Correct	44 ms	3300 KB	Output is correct
15	Correct	42 ms	3280 KB	Output is correct
16	Correct	41 ms	3380 KB	Output is correct
17	Correct	38 ms	2836 KB	Output is correct
18	Correct	380 ms	17152 KB	Output is correct
19	Correct	383 ms	17048 KB	Output is correct
20	Correct	425 ms	17068 KB	Output is correct
21	Correct	45 ms	3272 KB	Output is correct
22	Correct	34 ms	3268 KB	Output is correct
23	Correct	124 ms	9300 KB	Output is correct

Subtask #7
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	45 ms	3068 KB	Output is correct
3	Correct	42 ms	3132 KB	Output is correct
4	Correct	445 ms	17036 KB	Output is correct
5	Correct	40 ms	3016 KB	Output is correct
6	Correct	45 ms	3124 KB	Output is correct
7	Correct	41 ms	3024 KB	Output is correct
8	Correct	41 ms	3144 KB	Output is correct
9	Correct	40 ms	3120 KB	Output is correct
10	Correct	40 ms	3016 KB	Output is correct
11	Correct	40 ms	2940 KB	Output is correct
12	Correct	35 ms	2968 KB	Output is correct
13	Correct	40 ms	3016 KB	Output is correct
14	Correct	396 ms	16812 KB	Output is correct
15	Correct	41 ms	2888 KB	Output is correct
16	Correct	365 ms	16920 KB	Output is correct
17	Correct	356 ms	16812 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	212 KB	Output is correct
2	Correct	6 ms	1088 KB	Output is correct
3	Correct	6 ms	992 KB	Output is correct
4	Correct	1 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	316 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	1 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	320 KB	Output is correct
15	Correct	1 ms	212 KB	Output is correct
16	Correct	6 ms	1056 KB	Output is correct
17	Correct	42 ms	3528 KB	Output is correct
18	Correct	1 ms	320 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	316 KB	Output is correct
23	Correct	1 ms	320 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	320 KB	Output is correct
26	Correct	1 ms	340 KB	Output is correct
27	Correct	1 ms	340 KB	Output is correct
28	Correct	273 ms	16900 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	380 ms	16864 KB	Output is correct
31	Correct	375 ms	17280 KB	Output is correct
32	Correct	373 ms	17364 KB	Output is correct
33	Correct	1 ms	212 KB	Output is correct
34	Correct	382 ms	17412 KB	Output is correct
35	Correct	369 ms	16820 KB	Output is correct
36	Correct	370 ms	16988 KB	Output is correct
37	Correct	419 ms	17272 KB	Output is correct
38	Correct	0 ms	320 KB	Output is correct
39	Correct	37 ms	3524 KB	Output is correct
40	Correct	41 ms	3464 KB	Output is correct
41	Correct	38 ms	3524 KB	Output is correct
42	Correct	39 ms	3428 KB	Output is correct
43	Correct	39 ms	3372 KB	Output is correct
44	Correct	38 ms	3340 KB	Output is correct
45	Correct	37 ms	3328 KB	Output is correct
46	Correct	40 ms	3408 KB	Output is correct
47	Correct	44 ms	3300 KB	Output is correct
48	Correct	42 ms	3280 KB	Output is correct
49	Correct	41 ms	3380 KB	Output is correct
50	Correct	38 ms	2836 KB	Output is correct
51	Correct	380 ms	17152 KB	Output is correct
52	Correct	383 ms	17048 KB	Output is correct
53	Correct	425 ms	17068 KB	Output is correct
54	Correct	45 ms	3272 KB	Output is correct
55	Correct	34 ms	3268 KB	Output is correct
56	Correct	124 ms	9300 KB	Output is correct
57	Correct	1 ms	212 KB	Output is correct
58	Correct	45 ms	3068 KB	Output is correct
59	Correct	42 ms	3132 KB	Output is correct
60	Correct	445 ms	17036 KB	Output is correct
61	Correct	40 ms	3016 KB	Output is correct
62	Correct	45 ms	3124 KB	Output is correct
63	Correct	41 ms	3024 KB	Output is correct
64	Correct	41 ms	3144 KB	Output is correct
65	Correct	40 ms	3120 KB	Output is correct
66	Correct	40 ms	3016 KB	Output is correct
67	Correct	40 ms	2940 KB	Output is correct
68	Correct	35 ms	2968 KB	Output is correct
69	Correct	40 ms	3016 KB	Output is correct
70	Correct	396 ms	16812 KB	Output is correct
71	Correct	41 ms	2888 KB	Output is correct
72	Correct	365 ms	16920 KB	Output is correct
73	Correct	356 ms	16812 KB	Output is correct
74	Correct	0 ms	212 KB	Output is correct
75	Correct	1 ms	320 KB	Output is correct
76	Correct	0 ms	212 KB	Output is correct
77	Correct	1 ms	324 KB	Output is correct
78	Correct	0 ms	212 KB	Output is correct
79	Correct	4 ms	988 KB	Output is correct
80	Correct	444 ms	53208 KB	Output is correct
81	Correct	468 ms	53152 KB	Output is correct
82	Correct	421 ms	53132 KB	Output is correct
83	Correct	423 ms	53112 KB	Output is correct
84	Correct	420 ms	53104 KB	Output is correct
85	Correct	418 ms	53220 KB	Output is correct
86	Correct	139 ms	18492 KB	Output is correct
87	Correct	0 ms	212 KB	Output is correct

Submission #655087

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