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Submission #784514

# Submission time Handle Problem Language Result Execution time Memory
784514 2023-07-16T07:40:24 Z christinelynn Strange Device (APIO19_strange_device) C++17
35 / 100
 1435 ms 64508 KB 
#include <bits/stdc++.h>
using namespace std;

#define int long long
// #define i128 long long
#define i128 __int128_t

int n, a, b;
vector<pair<int, int>> sg;
const int maks = 1e18;

// i128 gcd(i128 a, i128 b) {
//   if (b == 0) return a;
//   return gcd(b, a%b);
// }

bool comp(pair<int, int> a, pair<int, int> b) {
  return (a.first < b.first or (a.first == b.first and a.second < b.second));
}

signed main() {
  i128 temp;
  // int temp;
  i128 size;
  cin >> n >> a >> b;
  // temp = a*b;
  temp = (a/__gcd(a,b+1))*b;
  // if ((b+1 % a) == 0) size = b;
  // if (temp > maks) size = maks;
  // else size = temp;
  size = temp;

  int l, r;
  for (int i = 0; i < n; i++) {
    cin >> l >> r;
    // cout << l << " " << r << endl;
    if (r - l + 1 >= size) {
      cout << (int)size << endl;
      return 0;
    } else if (l%size > r%size) {
      sg.push_back({l%size, 1});
      sg.push_back({size-1, 2});
      sg.push_back({0, 1});
      sg.push_back({r%size, 2});
    } else {
      sg.push_back({l%size, 1});
      sg.push_back({r%size, 2});
    }
  }
  sort(sg.begin(), sg.end(), comp);

  int cnt = 0, l2;
  vector<pair<int, int>> ans;
  for (int i = 0; i < sg.size(); i++) {
    // cout << sg[i].first << " " << sg[i].second << endl;
    if (sg[i].second == 1) {
      if (cnt == 0) l2 = sg[i].first;
      cnt++;
    } else cnt--;

    if (cnt == 0) {
      ans.push_back({l2, sg[i].first});
      // ans += sg[i].first-l2+1.;
    }
  }
  // cout << ans << endl;

  int res = 0;
  for (auto i: ans) {
    // cout << i.first << " " << i.second << endl;
    res += (i.second - i.first + 1);
  }
  cout << res << endl;

}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:54:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |   for (int i = 0; i < sg.size(); i++) {
      |                   ~~^~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 12 ms 1268 KB Output is correct
3 Correct 12 ms 1300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 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 288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 296 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 12 ms 1292 KB Output is correct
17 Correct 143 ms 8544 KB Output is correct
18 Incorrect 1 ms 212 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Incorrect 1 ms 300 KB Output isn't correct
6 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 2 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 830 ms 33656 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1229 ms 64132 KB Output is correct
3 Correct 1263 ms 64124 KB Output is correct
4 Correct 1311 ms 63760 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1229 ms 64132 KB Output is correct
3 Correct 1263 ms 64124 KB Output is correct
4 Correct 1311 ms 63760 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1242 ms 63868 KB Output is correct
7 Correct 1233 ms 63720 KB Output is correct
8 Correct 1251 ms 63768 KB Output is correct
9 Correct 1370 ms 63768 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1229 ms 64132 KB Output is correct
3 Correct 1263 ms 64124 KB Output is correct
4 Correct 1311 ms 63760 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 116 ms 7992 KB Output is correct
7 Correct 122 ms 8052 KB Output is correct
8 Correct 117 ms 7952 KB Output is correct
9 Correct 130 ms 8032 KB Output is correct
10 Correct 122 ms 8252 KB Output is correct
11 Correct 121 ms 8008 KB Output is correct
12 Correct 128 ms 8028 KB Output is correct
13 Correct 127 ms 7972 KB Output is correct
14 Correct 117 ms 8016 KB Output is correct
15 Correct 128 ms 7992 KB Output is correct
16 Correct 130 ms 8036 KB Output is correct
17 Correct 119 ms 7960 KB Output is correct
18 Correct 1251 ms 63824 KB Output is correct
19 Correct 1252 ms 63812 KB Output is correct
20 Correct 1435 ms 63740 KB Output is correct
21 Correct 134 ms 7940 KB Output is correct
22 Correct 109 ms 7908 KB Output is correct
23 Correct 378 ms 17676 KB Output is correct

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 127 ms 7884 KB Output is correct
3 Correct 127 ms 7600 KB Output is correct
4 Correct 1395 ms 64508 KB Output is correct
5 Correct 130 ms 7592 KB Output is correct
6 Correct 135 ms 7712 KB Output is correct
7 Correct 127 ms 7708 KB Output is correct
8 Correct 142 ms 7632 KB Output is correct
9 Correct 142 ms 7628 KB Output is correct
10 Correct 132 ms 7604 KB Output is correct
11 Correct 139 ms 7704 KB Output is correct
12 Correct 144 ms 7624 KB Output is correct
13 Correct 159 ms 7620 KB Output is correct
14 Correct 1400 ms 64152 KB Output is correct
15 Correct 139 ms 7396 KB Output is correct
16 Correct 1195 ms 63784 KB Output is correct
17 Correct 1280 ms 63760 KB Output is correct
18 Incorrect 0 ms 212 KB Output isn't correct
19 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 12 ms 1268 KB Output is correct
3 Correct 12 ms 1300 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 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 288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 296 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 12 ms 1292 KB Output is correct
17 Correct 143 ms 8544 KB Output is correct
18 Incorrect 1 ms 212 KB Output isn't correct
19 Halted 0 ms 0 KB -