Submission #1173851

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1173851	2025-03-26 04:33:46	stdfloat	Strange Device (APIO19_strange_device)	C++17	0 / 100	3849 ms	589824 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, r;
  cin >> l >> r;
  set<pair<ll, ll>> s;
  for (ll j = l; j <= r; j++) {
    ll x = (j + j / B) % A, y = j % B;
    if (s.find({x, y}) != s.end()) break;
    s.insert({x, y});
  }
  cout << (int)s.size();
}
 
 
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