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Submission #1095795

# Submission time Handle Problem Language Result Execution time Memory
1095795 2024-10-03T07:38:26 Z LucaLucaM Strange Device (APIO19_strange_device) C++17
100 / 100
 1188 ms 69228 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>

using ll = long long;
using i128 = __int128;

int main() {
//  freopen("input.txt", "r", stdin);

  int n;
  ll A, B;
  std::cin >> n >> A >> B;

  if ((i128) A * B / std::__gcd(A, B + 1) > 1e18) {
    ll answer = 0;
    for (int i = 0; i < n; i++) {
      ll l, r;
      std::cin >> l >> r;
      answer += r - l + 1;
    }
    std::cout << answer;
    return 0;
  }

  ll R = (i128) A * B / std::__gcd(A, B + 1);

  std::vector<std::pair<ll, int>> events;
  bool coverAll = false;

  for (int i = 0; i < n; i++) {
    ll l, r;
    std::cin >> l >> r;
    if (r - l + 1 >= R) {
      coverAll = true;
    }
    l %= R;
    r %= R;
    if (l <= r) {
      events.push_back({l, +1});
      events.push_back({r + 1, -1});
    } else {
      events.push_back({0, +1});
      events.push_back({r + 1, -1});
      events.push_back({l, +1});
      events.push_back({R, -1});
    }
  }

  if (coverAll) {
    std::cout << R;
    return 0;
  }

  events.push_back({R, 0});
  std::sort(events.begin(), events.end());
  i128 last = 0;
  int delta = 0;
  ll answer = 0;

  for (const auto &[pos, add] : events) {
    if (delta >= 1) {
      answer += pos - last;
    }
    delta += add;
    last = pos;
  }

  std::cout << answer;

  return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 10 ms 1240 KB Output is correct
3 Correct 10 ms 1496 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 9 ms 1208 KB Output is correct
17 Correct 99 ms 7304 KB Output is correct
18 Correct 0 ms 344 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 436 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 500 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 772 ms 56912 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1119 ms 68960 KB Output is correct
3 Correct 1083 ms 68868 KB Output is correct
4 Correct 1037 ms 69228 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1119 ms 68960 KB Output is correct
3 Correct 1083 ms 68868 KB Output is correct
4 Correct 1037 ms 69228 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1070 ms 68920 KB Output is correct
7 Correct 1092 ms 69052 KB Output is correct
8 Correct 1075 ms 68976 KB Output is correct
9 Correct 1041 ms 68688 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1119 ms 68960 KB Output is correct
3 Correct 1083 ms 68868 KB Output is correct
4 Correct 1037 ms 69228 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 109 ms 7164 KB Output is correct
7 Correct 129 ms 7264 KB Output is correct
8 Correct 100 ms 7160 KB Output is correct
9 Correct 124 ms 7356 KB Output is correct
10 Correct 126 ms 7216 KB Output is correct
11 Correct 94 ms 7180 KB Output is correct
12 Correct 110 ms 7404 KB Output is correct
13 Correct 105 ms 7352 KB Output is correct
14 Correct 121 ms 7156 KB Output is correct
15 Correct 105 ms 7224 KB Output is correct
16 Correct 109 ms 7160 KB Output is correct
17 Correct 106 ms 7348 KB Output is correct
18 Correct 1174 ms 68976 KB Output is correct
19 Correct 1101 ms 68864 KB Output is correct
20 Correct 1078 ms 68980 KB Output is correct
21 Correct 110 ms 7256 KB Output is correct
22 Correct 136 ms 7232 KB Output is correct
23 Correct 335 ms 26792 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 604 KB Output is correct
2 Correct 110 ms 7208 KB Output is correct
3 Correct 121 ms 7284 KB Output is correct
4 Correct 1188 ms 68892 KB Output is correct
5 Correct 109 ms 7356 KB Output is correct
6 Correct 122 ms 7356 KB Output is correct
7 Correct 119 ms 7384 KB Output is correct
8 Correct 141 ms 7412 KB Output is correct
9 Correct 108 ms 7352 KB Output is correct
10 Correct 108 ms 7352 KB Output is correct
11 Correct 114 ms 7348 KB Output is correct
12 Correct 103 ms 7192 KB Output is correct
13 Correct 107 ms 7348 KB Output is correct
14 Correct 1167 ms 68824 KB Output is correct
15 Correct 101 ms 7252 KB Output is correct
16 Correct 1032 ms 68980 KB Output is correct
17 Correct 1049 ms 68988 KB Output is correct
18 Correct 0 ms 344 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 10 ms 1240 KB Output is correct
3 Correct 10 ms 1496 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 9 ms 1208 KB Output is correct
17 Correct 99 ms 7304 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 436 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 2 ms 500 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 772 ms 56912 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1119 ms 68960 KB Output is correct
31 Correct 1083 ms 68868 KB Output is correct
32 Correct 1037 ms 69228 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 1070 ms 68920 KB Output is correct
35 Correct 1092 ms 69052 KB Output is correct
36 Correct 1075 ms 68976 KB Output is correct
37 Correct 1041 ms 68688 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 109 ms 7164 KB Output is correct
40 Correct 129 ms 7264 KB Output is correct
41 Correct 100 ms 7160 KB Output is correct
42 Correct 124 ms 7356 KB Output is correct
43 Correct 126 ms 7216 KB Output is correct
44 Correct 94 ms 7180 KB Output is correct
45 Correct 110 ms 7404 KB Output is correct
46 Correct 105 ms 7352 KB Output is correct
47 Correct 121 ms 7156 KB Output is correct
48 Correct 105 ms 7224 KB Output is correct
49 Correct 109 ms 7160 KB Output is correct
50 Correct 106 ms 7348 KB Output is correct
51 Correct 1174 ms 68976 KB Output is correct
52 Correct 1101 ms 68864 KB Output is correct
53 Correct 1078 ms 68980 KB Output is correct
54 Correct 110 ms 7256 KB Output is correct
55 Correct 136 ms 7232 KB Output is correct
56 Correct 335 ms 26792 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 110 ms 7208 KB Output is correct
59 Correct 121 ms 7284 KB Output is correct
60 Correct 1188 ms 68892 KB Output is correct
61 Correct 109 ms 7356 KB Output is correct
62 Correct 122 ms 7356 KB Output is correct
63 Correct 119 ms 7384 KB Output is correct
64 Correct 141 ms 7412 KB Output is correct
65 Correct 108 ms 7352 KB Output is correct
66 Correct 108 ms 7352 KB Output is correct
67 Correct 114 ms 7348 KB Output is correct
68 Correct 103 ms 7192 KB Output is correct
69 Correct 107 ms 7348 KB Output is correct
70 Correct 1167 ms 68824 KB Output is correct
71 Correct 101 ms 7252 KB Output is correct
72 Correct 1032 ms 68980 KB Output is correct
73 Correct 1049 ms 68988 KB Output is correct
74 Correct 0 ms 344 KB Output is correct
75 Correct 0 ms 348 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 1 ms 348 KB Output is correct
78 Correct 1 ms 348 KB Output is correct
79 Correct 10 ms 1240 KB Output is correct
80 Correct 1092 ms 68880 KB Output is correct
81 Correct 1038 ms 68980 KB Output is correct
82 Correct 1032 ms 69032 KB Output is correct
83 Correct 1081 ms 68940 KB Output is correct
84 Correct 1071 ms 68976 KB Output is correct
85 Correct 1081 ms 68836 KB Output is correct
86 Correct 333 ms 26684 KB Output is correct
87 Correct 0 ms 348 KB Output is correct