Submission #1137223

#	Time	Username	Problem	Language	Result	Execution time	Memory
1137223		sohamsen15	Pilot (NOI19_pilot)	C++20	18 / 100	1095 ms	11336 KiB

pilot

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);

    ll n, q; cin >> n >> q;
    vector<ll> h(n + 1); for (ll i = 1; i <= n; i++) cin >> h[i];
    vector<ll> y(q + 1); for (ll i = 1; i <= q; i++) cin >> y[i];
    vector<pii> a(n + 1); for (ll i = 1; i <= n; i++) a[i] = {h[i], i};
    vector<pii> queries(q); for (ll i = 1; i <= q; i++) queries[i - 1] = {y[i], i};
    vector<ll> answers(q + 1);
    auto f = [](ll n) { return n * (n + 1) / 2; };
    ll lastVal = INT_MAX;
    auto g = [&](set<ll> s) {
        ll ans = 0;
        ll m = s.size();
        vector<ll> v; v.push_back(0);
        for (auto x: s) v.push_back(x);
        v.push_back(n + 1);
        for (int i = 1; i <= m + 1; i++) {
            ans += f(v[i] - v[i - 1] - 1);
            if (v[i - 1] == lastVal) break;
        }
        lastVal = v[1];
        return ans;
    };
    sort(a.begin(), a.end());
    sort(queries.rbegin(), queries.rend());
    set<ll> s;
    ll lastIdx = INT_MAX;
    for (auto query: queries) {
        ll plane = query.first;
        ll target = plane + 1;
        ll l = 1, r = n;
        ll idx = -1;
        while (l <= r) {
            ll mid = (l + r) / 2;
            if (a[mid].first < target) l = mid + 1;
            else {
                if (mid == 1) {
                    idx = mid;
                    break;
                }
                if (a[mid - 1].first < target) {
                    idx = mid;
                    break;
                } else 
                    r = mid;
            }
        }
        if (idx == -1) {
            answers[query.second] = f(n);
        } else {
            ll ans = 0;
            for (ll j = idx; j <= n; j++) {
                s.insert(a[j].second);
                if (j >= lastIdx) break;
            }
            lastIdx = idx;
            answers[query.second] = g(s);
        }
    }

    for (ll i = 1; i <= q; i++) cout << answers[i] << "\n";
}

• Subtask 1: 3 / 3
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 5 / 5
• Subtask 6: 0 / 9
• Subtask 7: 0 / 14
• Subtask 8: 10 / 10
• Subtask 9: 0 / 11
• Subtask 10: 0 / 11