Submission #839346

#	Time	Username	Problem	Language	Result	Execution time	Memory
839346		tch1cherin	Strange Device (APIO19_strange_device)	C++17	10 / 100	1550 ms	524288 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;

const long long INF = 2e18;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int N;
  long long A, B;
  cin >> N >> A >> B;
  long long AI = A / gcd(A, B + 1);
  int M = INF / AI >= B ? AI * B : INF;   
  vector<long long> rem;
  for (int i = 0; i < N; i++) {
    long long L, R;
    cin >> L >> R;
    for (auto i = L; i <= R; i++) {
      rem.push_back(i % M);
    }
  }
  sort(rem.begin(), rem.end());
  cout << (unique(rem.begin(), rem.end()) - rem.begin()) << "\n";
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 5
• Subtask 3: 0 / 5
• Subtask 4: 0 / 5
• Subtask 5: 0 / 5
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20
• Subtask 8: 0 / 30