Submission #819968

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
819968	2023-08-10 16:38:22	Alan	Strange Device (APIO19_strange_device)	C++17	15 / 100	1548 ms	100212 KiB

strange_device

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const ll inf = 1e18;
void add (set<pair<ll, ll>>& st, ll l, ll r) {
  auto it = st.lower_bound({l, 0}), tmp = it;
  if (it != st.begin() && (--tmp)->second >= l) {
    l = tmp->first;
    st.erase(tmp);
  }
  while (it != st.end()) {
    if (r >= it->first) {
      r = max(r, it->second);
      it = st.erase(it);
    } else break;
  }
  st.insert({l, r});
}
int main () {
  ll n, a, b;
  cin >> n >> a >> b;
  ll mod;
  if (a / gcd(a, b+1) > inf / b) mod = inf;
  else mod = a / gcd(a, b+1) * b;
  set<pair<ll, ll>> st;
  while (n--) {
    ll l, r;
 
 
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