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Submission #135477

# Submission time Handle Problem Language Result Execution time Memory
135477 2019-07-24T06:28:09 Z Juney Strange Device (APIO19_strange_device) C++14
100 / 100
 687 ms 18708 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<ll, ll> pll;

const ll INF = 1e18;

ll N, A, B, T;

ll sweep(vector<pll> &v) {
    ll l = 0, r = -1, ret = 0;
    for(auto line : v) {
        if(r >= line.first) r = max(r, line.second);
        else {
            ret += (r - l + 1);
            l = line.first, r = line.second;
        }
    }
    return ret + (r - l + 1);
}

int main() {
    ios::sync_with_stdio(0); cin.tie(0);
    cin >> N >> A >> B;
    T = A / __gcd(A, B+1);
    if(INF / A + 1 < B) T = INF;
    else T *= B, T = min(T, INF);

    vector<pll> line;
    for(int i=1; i<=N; i++) {
        ll a, b; cin >> a >> b;
        if(b - a >= T) {
            cout << T;
            return 0;
        }
        a %= T; b %= T;
        if(a > b) {
            line.push_back(pll(a, T-1));
            line.push_back(pll(0, b));
        }
        else line.push_back(pll(a, b));
    }
    sort(line.begin(), line.end());
    line.erase(unique(line.begin(), line.end()), line.end());
    cout << sweep(line);
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 8 ms 1016 KB Output is correct
3 Correct 8 ms 1016 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 256 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 380 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 9 ms 1016 KB Output is correct
17 Correct 68 ms 3052 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 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 296 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 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 457 ms 17360 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 610 ms 17476 KB Output is correct
3 Correct 611 ms 17232 KB Output is correct
4 Correct 608 ms 17152 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 610 ms 17476 KB Output is correct
3 Correct 611 ms 17232 KB Output is correct
4 Correct 608 ms 17152 KB Output is correct
5 Correct 2 ms 380 KB Output is correct
6 Correct 603 ms 17160 KB Output is correct
7 Correct 602 ms 17264 KB Output is correct
8 Correct 614 ms 17188 KB Output is correct
9 Correct 659 ms 17336 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 610 ms 17476 KB Output is correct
3 Correct 611 ms 17232 KB Output is correct
4 Correct 608 ms 17152 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 60 ms 2796 KB Output is correct
7 Correct 65 ms 2760 KB Output is correct
8 Correct 62 ms 2748 KB Output is correct
9 Correct 64 ms 3056 KB Output is correct
10 Correct 61 ms 3052 KB Output is correct
11 Correct 65 ms 3056 KB Output is correct
12 Correct 62 ms 3056 KB Output is correct
13 Correct 68 ms 2944 KB Output is correct
14 Correct 61 ms 2796 KB Output is correct
15 Correct 69 ms 2848 KB Output is correct
16 Correct 67 ms 2700 KB Output is correct
17 Correct 64 ms 2796 KB Output is correct
18 Correct 609 ms 16980 KB Output is correct
19 Correct 599 ms 17212 KB Output is correct
20 Correct 670 ms 17108 KB Output is correct
21 Correct 67 ms 3056 KB Output is correct
22 Correct 57 ms 3056 KB Output is correct
23 Correct 197 ms 9768 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 66 ms 2932 KB Output is correct
3 Correct 67 ms 2744 KB Output is correct
4 Correct 687 ms 16992 KB Output is correct
5 Correct 66 ms 2872 KB Output is correct
6 Correct 66 ms 2792 KB Output is correct
7 Correct 67 ms 2772 KB Output is correct
8 Correct 67 ms 2788 KB Output is correct
9 Correct 65 ms 2744 KB Output is correct
10 Correct 66 ms 2820 KB Output is correct
11 Correct 66 ms 2640 KB Output is correct
12 Correct 61 ms 2544 KB Output is correct
13 Correct 66 ms 2580 KB Output is correct
14 Correct 660 ms 16952 KB Output is correct
15 Correct 68 ms 2756 KB Output is correct
16 Correct 621 ms 17004 KB Output is correct
17 Correct 598 ms 17172 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 380 KB Output is correct
2 Correct 8 ms 1016 KB Output is correct
3 Correct 8 ms 1016 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 2 ms 256 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 380 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 9 ms 1016 KB Output is correct
17 Correct 68 ms 3052 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 296 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 376 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 457 ms 17360 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 610 ms 17476 KB Output is correct
31 Correct 611 ms 17232 KB Output is correct
32 Correct 608 ms 17152 KB Output is correct
33 Correct 2 ms 380 KB Output is correct
34 Correct 603 ms 17160 KB Output is correct
35 Correct 602 ms 17264 KB Output is correct
36 Correct 614 ms 17188 KB Output is correct
37 Correct 659 ms 17336 KB Output is correct
38 Correct 2 ms 384 KB Output is correct
39 Correct 60 ms 2796 KB Output is correct
40 Correct 65 ms 2760 KB Output is correct
41 Correct 62 ms 2748 KB Output is correct
42 Correct 64 ms 3056 KB Output is correct
43 Correct 61 ms 3052 KB Output is correct
44 Correct 65 ms 3056 KB Output is correct
45 Correct 62 ms 3056 KB Output is correct
46 Correct 68 ms 2944 KB Output is correct
47 Correct 61 ms 2796 KB Output is correct
48 Correct 69 ms 2848 KB Output is correct
49 Correct 67 ms 2700 KB Output is correct
50 Correct 64 ms 2796 KB Output is correct
51 Correct 609 ms 16980 KB Output is correct
52 Correct 599 ms 17212 KB Output is correct
53 Correct 670 ms 17108 KB Output is correct
54 Correct 67 ms 3056 KB Output is correct
55 Correct 57 ms 3056 KB Output is correct
56 Correct 197 ms 9768 KB Output is correct
57 Correct 2 ms 376 KB Output is correct
58 Correct 66 ms 2932 KB Output is correct
59 Correct 67 ms 2744 KB Output is correct
60 Correct 687 ms 16992 KB Output is correct
61 Correct 66 ms 2872 KB Output is correct
62 Correct 66 ms 2792 KB Output is correct
63 Correct 67 ms 2772 KB Output is correct
64 Correct 67 ms 2788 KB Output is correct
65 Correct 65 ms 2744 KB Output is correct
66 Correct 66 ms 2820 KB Output is correct
67 Correct 66 ms 2640 KB Output is correct
68 Correct 61 ms 2544 KB Output is correct
69 Correct 66 ms 2580 KB Output is correct
70 Correct 660 ms 16952 KB Output is correct
71 Correct 68 ms 2756 KB Output is correct
72 Correct 621 ms 17004 KB Output is correct
73 Correct 598 ms 17172 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 2 ms 376 KB Output is correct
77 Correct 2 ms 504 KB Output is correct
78 Correct 2 ms 380 KB Output is correct
79 Correct 8 ms 1272 KB Output is correct
80 Correct 683 ms 18516 KB Output is correct
81 Correct 680 ms 18600 KB Output is correct
82 Correct 659 ms 18516 KB Output is correct
83 Correct 658 ms 18536 KB Output is correct
84 Correct 661 ms 18616 KB Output is correct
85 Correct 660 ms 18708 KB Output is correct
86 Correct 194 ms 13500 KB Output is correct
87 Correct 2 ms 376 KB Output is correct