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Submission #198260

# Submission time Handle Problem Language Result Execution time Memory
198260 2020-01-25T09:03:34 Z Alexa2001 Strange Device (APIO19_strange_device) C++17
100 / 100
 751 ms 93628 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int Nmax = 1e6 + 5;
const ll inf = 1e18 + 10;


struct seg
{
    ll l, r;
} a[Nmax];

ll A, B, per;
int n;

int main()
{
  //  freopen("input", "r", stdin);
    cin.sync_with_stdio(false); cin.tie(0);

    int i;
    cin >> n >> A >> B;
    for(i=1; i<=n; ++i) cin >> a[i].l >> a[i].r;

    ll g = __gcd(A, B+1);
    A /= g;

    /// if(A*B > inf)
    if(A > inf / B + 1) per = inf;
        else per = min(inf, A * B);

    for(i=1; i<=n; ++i)
        if(a[i].r - a[i].l + 1 >= per)
        {
            cout << per << '\n';
            return 0;
        }

    vector<pair<ll, ll>> v, v2;

    for(i=1; i<=n; ++i)
    {
        a[i].l %= per;
        a[i].r %= per;

        if(a[i].l <= a[i].r)
            v.push_back({a[i].l, a[i].r});
        else
        {
            v.push_back({a[i].l, per-1});
            v.push_back({0, a[i].r});
        }
    }

    sort(v.begin(), v.end(),
         [](pair<ll,ll> a, pair<ll,ll> b)
         { if(a.first == b.first) return a.second > b.second; return a < b; }
         );

    ll mx = -1;
    for(auto it : v)
        if(it.second > mx) v2.push_back(it), mx = it.second;

    swap(v, v2);

    ll ans = per;

    for(i=0; i+1<v.size(); ++i)
        if(v[i].second < v[i+1].first) ans -= v[i+1].first - v[i].second - 1;

    ans -= v[0].first;
    ans -= per - 1 - v.back().second;

    cout << ans << '\n';

    return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:71:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i=0; i+1<v.size(); ++i)
              ~~~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 9 ms 1016 KB Output is correct
3 Correct 9 ms 1016 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 372 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 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 8 ms 1020 KB Output is correct
17 Correct 73 ms 6632 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 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 1 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 471 ms 57728 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 376 KB Output is correct
2 Correct 670 ms 56388 KB Output is correct
3 Correct 658 ms 93600 KB Output is correct
4 Correct 663 ms 93524 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 376 KB Output is correct
2 Correct 670 ms 56388 KB Output is correct
3 Correct 658 ms 93600 KB Output is correct
4 Correct 663 ms 93524 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 672 ms 93524 KB Output is correct
7 Correct 692 ms 93408 KB Output is correct
8 Correct 674 ms 93628 KB Output is correct
9 Correct 731 ms 93504 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 376 KB Output is correct
2 Correct 670 ms 56388 KB Output is correct
3 Correct 658 ms 93600 KB Output is correct
4 Correct 663 ms 93524 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 67 ms 10300 KB Output is correct
7 Correct 72 ms 10340 KB Output is correct
8 Correct 68 ms 10216 KB Output is correct
9 Correct 69 ms 10448 KB Output is correct
10 Correct 67 ms 10316 KB Output is correct
11 Correct 70 ms 10292 KB Output is correct
12 Correct 67 ms 10312 KB Output is correct
13 Correct 72 ms 10216 KB Output is correct
14 Correct 74 ms 10216 KB Output is correct
15 Correct 74 ms 10344 KB Output is correct
16 Correct 72 ms 10316 KB Output is correct
17 Correct 69 ms 10340 KB Output is correct
18 Correct 687 ms 93572 KB Output is correct
19 Correct 667 ms 93536 KB Output is correct
20 Correct 745 ms 93528 KB Output is correct
21 Correct 73 ms 10344 KB Output is correct
22 Correct 66 ms 10420 KB Output is correct
23 Correct 197 ms 26592 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 72 ms 10332 KB Output is correct
3 Correct 80 ms 10320 KB Output is correct
4 Correct 751 ms 93440 KB Output is correct
5 Correct 72 ms 10216 KB Output is correct
6 Correct 71 ms 10288 KB Output is correct
7 Correct 74 ms 10216 KB Output is correct
8 Correct 74 ms 10216 KB Output is correct
9 Correct 71 ms 10344 KB Output is correct
10 Correct 74 ms 10356 KB Output is correct
11 Correct 71 ms 10348 KB Output is correct
12 Correct 65 ms 10396 KB Output is correct
13 Correct 72 ms 10344 KB Output is correct
14 Correct 723 ms 93280 KB Output is correct
15 Correct 71 ms 10224 KB Output is correct
16 Correct 668 ms 93372 KB Output is correct
17 Correct 660 ms 93288 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 376 KB Output is correct
2 Correct 9 ms 1016 KB Output is correct
3 Correct 9 ms 1016 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 372 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 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 8 ms 1020 KB Output is correct
17 Correct 73 ms 6632 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 1 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 471 ms 57728 KB Output is correct
29 Correct 0 ms 376 KB Output is correct
30 Correct 670 ms 56388 KB Output is correct
31 Correct 658 ms 93600 KB Output is correct
32 Correct 663 ms 93524 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 672 ms 93524 KB Output is correct
35 Correct 692 ms 93408 KB Output is correct
36 Correct 674 ms 93628 KB Output is correct
37 Correct 731 ms 93504 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 67 ms 10300 KB Output is correct
40 Correct 72 ms 10340 KB Output is correct
41 Correct 68 ms 10216 KB Output is correct
42 Correct 69 ms 10448 KB Output is correct
43 Correct 67 ms 10316 KB Output is correct
44 Correct 70 ms 10292 KB Output is correct
45 Correct 67 ms 10312 KB Output is correct
46 Correct 72 ms 10216 KB Output is correct
47 Correct 74 ms 10216 KB Output is correct
48 Correct 74 ms 10344 KB Output is correct
49 Correct 72 ms 10316 KB Output is correct
50 Correct 69 ms 10340 KB Output is correct
51 Correct 687 ms 93572 KB Output is correct
52 Correct 667 ms 93536 KB Output is correct
53 Correct 745 ms 93528 KB Output is correct
54 Correct 73 ms 10344 KB Output is correct
55 Correct 66 ms 10420 KB Output is correct
56 Correct 197 ms 26592 KB Output is correct
57 Correct 2 ms 376 KB Output is correct
58 Correct 72 ms 10332 KB Output is correct
59 Correct 80 ms 10320 KB Output is correct
60 Correct 751 ms 93440 KB Output is correct
61 Correct 72 ms 10216 KB Output is correct
62 Correct 71 ms 10288 KB Output is correct
63 Correct 74 ms 10216 KB Output is correct
64 Correct 74 ms 10216 KB Output is correct
65 Correct 71 ms 10344 KB Output is correct
66 Correct 74 ms 10356 KB Output is correct
67 Correct 71 ms 10348 KB Output is correct
68 Correct 65 ms 10396 KB Output is correct
69 Correct 72 ms 10344 KB Output is correct
70 Correct 723 ms 93280 KB Output is correct
71 Correct 71 ms 10224 KB Output is correct
72 Correct 668 ms 93372 KB Output is correct
73 Correct 660 ms 93288 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 376 KB Output is correct
78 Correct 2 ms 376 KB Output is correct
79 Correct 9 ms 1400 KB Output is correct
80 Correct 750 ms 93456 KB Output is correct
81 Correct 750 ms 93496 KB Output is correct
82 Correct 728 ms 93560 KB Output is correct
83 Correct 721 ms 93444 KB Output is correct
84 Correct 713 ms 92436 KB Output is correct
85 Correct 728 ms 93568 KB Output is correct
86 Correct 201 ms 26504 KB Output is correct
87 Correct 2 ms 376 KB Output is correct