제출 #1044725

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1044725		vjudge1	이상한 기계 (APIO19_strange_device)	C++17	0 / 100	552 ms	63032 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
 
#define fast ios::sync_with_stdio(0);cin.tie(0);
typedef long long ll;
#define f first
#define s second
#define LOGN 21
const ll MOD = 1e9 + 7;
const ll MAXN = 3e4 + 100;

#define int long long
set<pair<int,int>> st;
void add_seg(int l, int r) {
    if (st.size()) {
        auto x = st.lower_bound(make_pair(l, 0));
        if (x != st.begin()) {
            x--;
            if ((*x).s >= l) {
                l = min(l, (*x).f);
                st.erase(x);
            }
        }
        x = st.lower_bound(make_pair(l, 0));
        if (x != st.end() && (*x).f <= r) {
            r = max(r, (*x).s);
            st.erase(x);
        }
    }
    st.insert({l, r});
}

signed main() {
    fast
    ll n, A, B;
    cin >> n >> A >> B;

    if (1e9 * 1LL * 1e9 / A <= B) {
        int ans = 0;
        for (int i = 0; i < n; i++) {
            int l, r;
            cin >> l >> r;
            ans += r - l + 1;
        }
        cout << ans << "\n";
    }

    A *= B;

    for (int i = 0; i < n; i++) {
        int l, r;
        cin >> l >> r;

        int x = l % A;
        int y = r % A;
        if (y < x || r - l + 1 >= A) {
            add_seg(x, A-1);
            add_seg(0, y);
        } else
            add_seg(x, y);
    }

    ll ans = 0;
    for (auto u : st)
        ans += u.s - u.f + 1;
    cout << ans << "\n";
}

• Subtask 1: 0 / 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