Submission #1173309

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1173309	2025-03-25 05:32:08	thinknoexit	Strange Device (APIO19_strange_device)	C++20	100 / 100	504 ms	33476 KiB

strange_device

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
const ll INF = 1e18 + 2;
int main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    int n;
    ll A, B;
    cin >> n >> A >> B;
    ll one = A / gcd(A, B + 1);
    if (one >= (INF + B - 1) / B) one = INF;
    else one *= B;
    // cout << one << '\n';
    vector<pair<ll, int>> sweep;
    for (int i = 1;i <= n;i++) {
        ll l, r;
        cin >> l >> r;
        if (r - l + 1 >= one) {
            cout << one << '\n';
            return 0;
        }
        l %= one, r %= one;
        // cout << l << ' ' << r << '\n';
        if (l <= r) {
            sweep.push_back({ l, 1 });
            sweep.push_back({ r + 1, -1 });
        }
        else {
            sweep.push_back({ 0, 1 });
            sweep.push_back({ r + 1, -1 });
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

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