Submission #984807

#	Time	Username	Problem	Language	Result	Execution time	Memory
984807		vjudge1	Strange Device (APIO19_strange_device)	C++17	0 / 100	5084 ms	524288 KiB

strange_device

#include <bits/stdc++.h>
#define ft first
#define sd second
#define pb push_back
#define nl "\n"
#define int ll
typedef long long ll;
typedef long double ld;
using namespace std;
const int N = 1000100;

int n, a, b;

void solve() {
    cin >> n >> a >> b;
    int S = 0;
    map<int, int> mp;
    int R;
    for (int i = 0; i < n; i++) {
        int l, r;
        cin >> l >> r;
        R = r;
        S += (r - l + 1);
        for (int j = l; j <= r; j++) {
            mp[j] = 1;
        }
    }
    if (S <= 1e6) {
        for (auto j : mp) {
            if (j.sd == 0) continue;
            int t = j.ft;
            int k = 0;
            while(t + b * (k + 1) <= R) {
                k++;
                if (mp.find(t + b * k) != mp.end() && (b + 1) * k % a == 0) {
                    S--;
                    mp[t + b * k] = 0;
                }
            }
        }
        cout << S << nl;
    }
}

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int T = 1;
    while(T--) {
        solve();
    }
}

• 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