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Submission #206167

# Submission time Handle Problem Language Result Execution time Memory
206167 2020-03-02T15:22:50 Z AlexLuchianov Strange Device (APIO19_strange_device) C++14
100 / 100
 829 ms 47292 KB 
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

using ll = long long;
using ld = long double;

ll const inf = 1000000000000000000;

ll period(ll a, ll b){
  ll p = __gcd(a, b + 1);
  if(a / p <= inf / b)
    return a / p * b;
  return inf + 1;
}

int main()
{
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);

  int n;
  ll a, b;
  cin >> n >> a >> b;
  ll pi = period(a, b);
  if(inf < pi){
    ll result = 0;
    for(int i = 1;i <= n; i++){
      ll x, y;
      cin >> x >> y;
      result += y - x + 1;
    }
    cout << result;
  } else {
    vector<pair<ll,int>> event;
    for(int i = 1;i <= n; i++){
      ll x, y;
      cin >> x >> y;
      if(y - x < pi){
        if(x % pi <= y % pi){
          event.push_back({x % pi, 1});
          event.push_back({y % pi + 1, -1});
        } else {
          event.push_back({x % pi, 1});
          event.push_back({pi, -1});
          event.push_back({0, 1});
          event.push_back({y % pi + 1, -1});
        }
      } else {
        cout << pi;
        return 0;
      }
    }
    sort(event.begin(), event.end());
    ll result = 0, last = 0, sum = 0;
    for(int i = 0; i < event.size(); i++){
      if(0 < sum)
        result += event[i].first - last;
      last = event[i].first;
      sum += event[i].second;
    }
    cout << result;
  }
  return 0;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:62:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < event.size(); i++){
                    ~~^~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 11 ms 1016 KB Output is correct
3 Correct 11 ms 1016 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 380 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 12 ms 1400 KB Output is correct
17 Correct 83 ms 7392 KB Output is correct
18 Correct 5 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 6 ms 380 KB Output is correct
5 Correct 458 ms 33320 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 684 ms 33344 KB Output is correct
3 Correct 702 ms 47292 KB Output is correct
4 Correct 641 ms 37024 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 684 ms 33344 KB Output is correct
3 Correct 702 ms 47292 KB Output is correct
4 Correct 641 ms 37024 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 683 ms 37036 KB Output is correct
7 Correct 662 ms 37552 KB Output is correct
8 Correct 685 ms 36956 KB Output is correct
9 Correct 766 ms 37532 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 684 ms 33344 KB Output is correct
3 Correct 702 ms 47292 KB Output is correct
4 Correct 641 ms 37024 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 71 ms 7272 KB Output is correct
7 Correct 78 ms 7368 KB Output is correct
8 Correct 68 ms 7392 KB Output is correct
9 Correct 68 ms 7272 KB Output is correct
10 Correct 69 ms 7392 KB Output is correct
11 Correct 70 ms 7272 KB Output is correct
12 Correct 68 ms 7272 KB Output is correct
13 Correct 77 ms 7392 KB Output is correct
14 Correct 71 ms 7272 KB Output is correct
15 Correct 85 ms 7416 KB Output is correct
16 Correct 80 ms 7392 KB Output is correct
17 Correct 76 ms 7272 KB Output is correct
18 Correct 721 ms 37152 KB Output is correct
19 Correct 661 ms 37404 KB Output is correct
20 Correct 801 ms 37020 KB Output is correct
21 Correct 79 ms 7272 KB Output is correct
22 Correct 67 ms 7340 KB Output is correct
23 Correct 198 ms 26708 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 76 ms 4712 KB Output is correct
3 Correct 77 ms 4708 KB Output is correct
4 Correct 829 ms 33472 KB Output is correct
5 Correct 73 ms 4840 KB Output is correct
6 Correct 75 ms 4840 KB Output is correct
7 Correct 75 ms 4840 KB Output is correct
8 Correct 75 ms 4840 KB Output is correct
9 Correct 79 ms 4892 KB Output is correct
10 Correct 80 ms 4840 KB Output is correct
11 Correct 77 ms 4844 KB Output is correct
12 Correct 66 ms 4840 KB Output is correct
13 Correct 77 ms 4840 KB Output is correct
14 Correct 787 ms 33668 KB Output is correct
15 Correct 78 ms 4836 KB Output is correct
16 Correct 643 ms 37020 KB Output is correct
17 Correct 668 ms 36944 KB Output is correct
18 Correct 5 ms 376 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 11 ms 1016 KB Output is correct
3 Correct 11 ms 1016 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 380 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 5 ms 376 KB Output is correct
9 Correct 5 ms 376 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 376 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 376 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 12 ms 1400 KB Output is correct
17 Correct 83 ms 7392 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 376 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 376 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 6 ms 376 KB Output is correct
26 Correct 5 ms 376 KB Output is correct
27 Correct 6 ms 380 KB Output is correct
28 Correct 458 ms 33320 KB Output is correct
29 Correct 5 ms 256 KB Output is correct
30 Correct 684 ms 33344 KB Output is correct
31 Correct 702 ms 47292 KB Output is correct
32 Correct 641 ms 37024 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 683 ms 37036 KB Output is correct
35 Correct 662 ms 37552 KB Output is correct
36 Correct 685 ms 36956 KB Output is correct
37 Correct 766 ms 37532 KB Output is correct
38 Correct 5 ms 376 KB Output is correct
39 Correct 71 ms 7272 KB Output is correct
40 Correct 78 ms 7368 KB Output is correct
41 Correct 68 ms 7392 KB Output is correct
42 Correct 68 ms 7272 KB Output is correct
43 Correct 69 ms 7392 KB Output is correct
44 Correct 70 ms 7272 KB Output is correct
45 Correct 68 ms 7272 KB Output is correct
46 Correct 77 ms 7392 KB Output is correct
47 Correct 71 ms 7272 KB Output is correct
48 Correct 85 ms 7416 KB Output is correct
49 Correct 80 ms 7392 KB Output is correct
50 Correct 76 ms 7272 KB Output is correct
51 Correct 721 ms 37152 KB Output is correct
52 Correct 661 ms 37404 KB Output is correct
53 Correct 801 ms 37020 KB Output is correct
54 Correct 79 ms 7272 KB Output is correct
55 Correct 67 ms 7340 KB Output is correct
56 Correct 198 ms 26708 KB Output is correct
57 Correct 5 ms 376 KB Output is correct
58 Correct 76 ms 4712 KB Output is correct
59 Correct 77 ms 4708 KB Output is correct
60 Correct 829 ms 33472 KB Output is correct
61 Correct 73 ms 4840 KB Output is correct
62 Correct 75 ms 4840 KB Output is correct
63 Correct 75 ms 4840 KB Output is correct
64 Correct 75 ms 4840 KB Output is correct
65 Correct 79 ms 4892 KB Output is correct
66 Correct 80 ms 4840 KB Output is correct
67 Correct 77 ms 4844 KB Output is correct
68 Correct 66 ms 4840 KB Output is correct
69 Correct 77 ms 4840 KB Output is correct
70 Correct 787 ms 33668 KB Output is correct
71 Correct 78 ms 4836 KB Output is correct
72 Correct 643 ms 37020 KB Output is correct
73 Correct 668 ms 36944 KB Output is correct
74 Correct 5 ms 376 KB Output is correct
75 Correct 5 ms 376 KB Output is correct
76 Correct 5 ms 376 KB Output is correct
77 Correct 5 ms 376 KB Output is correct
78 Correct 5 ms 380 KB Output is correct
79 Correct 11 ms 1400 KB Output is correct
80 Correct 825 ms 36888 KB Output is correct
81 Correct 816 ms 37108 KB Output is correct
82 Correct 776 ms 37064 KB Output is correct
83 Correct 761 ms 36912 KB Output is correct
84 Correct 762 ms 37112 KB Output is correct
85 Correct 778 ms 37688 KB Output is correct
86 Correct 192 ms 26708 KB Output is correct
87 Correct 5 ms 376 KB Output is correct