Submission #999548

#	Time	Username	Problem	Language	Result	Execution time	Memory
999548		gmroh06	Matryoshka (JOI16_matryoshka)	C++14	100 / 100	114 ms	18776 KiB

matryoshka

#import <bits/stdc++.h>

using namespace std;
using ll = long long;

inline void init() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
}

int main() {
    init();

    ll n, q;

    cin >> n >> q;

    vector<pair<ll, ll>> v(n);
    vector<tuple<ll, ll, ll>> query(q);

    for (auto& [a, b] : v) {
        cin >> a >> b;
        b *= -1;
    }

    sort(v.rbegin(), v.rend());

    for (ll i = 0, a, b; i < q; i++) {
        cin >> a >> b;
        query[i] = tie(a, b, i);
    }

    sort(query.rbegin(), query.rend());

    vector<ll> ans(q);
    vector<ll> dp;
    auto it = v.begin();

    for (auto& [a, b, idx] : query) {
        for (; it < v.end() and a <= it -> first; it++) {
            auto s = upper_bound(dp.begin(), dp.end(), -it -> second);

            if (s == dp.end()) {
                dp.emplace_back(-it -> second);
            } else {
                *s = -it -> second;
            }
        }

        ans[idx] = upper_bound(dp.begin(), dp.end(), b) - dp.begin();
    }

    for (auto& x : ans) {
        cout << x << '\n';
    }

    return 0;
}

Compilation message (stderr)

matryoshka.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated]
    1 | #import <bits/stdc++.h>
      |  ^~~~~~
matryoshka.cpp: In function 'int main()':
matryoshka.cpp:22:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   22 |     for (auto& [a, b] : v) {
      |                ^
matryoshka.cpp:40:16: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   40 |     for (auto& [a, b, idx] : query) {
      |                ^

• Subtask 1: 11 / 11
• Subtask 2: 15 / 15
• Subtask 3: 25 / 25
• Subtask 4: 49 / 49