Submission #1367066

#	Time	Username	Problem	Language	Result	Execution time	Memory
1367066		serendipitous	Strange Device (APIO19_strange_device)	C++20	10 / 100	5094 ms	589824 KiB

strange_device

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

map<pair<ll, ll>, bool> store;

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    ll n, a, b; cin >> n >> a >> b;
    ll ans = 0;
    for(int i = 0; i < n; ++i) {
        ll x1, y1; cin >> x1 >> y1;
        for(ll x = x1; x <= y1; ++x) {
            bool &exists = store[{(x + (x/b)) % a, (x % b)}];
            if(!exists) {
                ++ans;
                exists = true;
            }
        }
    }
    cout << ans;
}

• Subtask 1: 10 / 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