Submission #1173894

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1173894	2025-03-26 06:06:23	stdfloat	Strange Device (APIO19_strange_device)	C++20	100 / 100	614 ms	63152 KiB

strange_device

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);
  int n;
  ll A, B;
  cin >> n >> A >> B;
  ll L = min(LLONG_MAX / B, A / __gcd(A, B + 1)) * B;
  map<ll, int> m;
  m[0] = 0; m[L] = 0;
  while (n--) {
    ll l, r;
    cin >> l >> r;
    if (L <= r - l + 1) return cout << L, 0;
    m[l % L]++;
    m[r % L + 1]--;
    if (r % L < l % L) {
      m[0]++; m[L]--;
    }
  }
 
 
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• Subtask 8: 30 / 30