Submission #884952

#	Time	Username	Problem	Language	Result	Execution time	Memory
884952		aykhn	Matryoshka (JOI16_matryoshka)	C++17	100 / 100	122 ms	18516 KiB

matryoshka

#include <bits/stdc++.h>
 
// author : aykhn
 
using namespace std;
typedef long long ll;
 
#define pb push_back
#define ins insert
#define mpr make_pair
#define all(v) v.begin(), v.end()
#define bpc __builtin_popcountll
#define pii pair<ll, ll>
#define pll pair<ll, ll>
#define fi first
#define se second
#define int ll
#define infll 0x3F3F3F3F3F3F3F3F
#define inf 0x3F3F3F3F

const int MXN = 2e5 + 5;

int n;
array<int, 2> p[MXN];
array<int, 3> q[MXN];
int res[MXN];

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr);
    int Q;
    cin >> n >> Q;
    for (int i = 0; i < n; i++) cin >> p[i][0] >> p[i][1];
    for (int i = 0; i < Q; i++) cin >> q[i][0] >> q[i][1], q[i][2] = i;
    sort(p, p + n, [&](const array<int, 2> &a, const array<int, 2> &b)
    {
        return (a[0] == b[0] ? a[1] < b[1] : a[0] > b[0]);
    });
    sort(q, q + Q, [&](const array<int, 3> &a, const array<int, 3> &b)
    {
        return a[0] > b[0];
    });
    vector<int> s;
    int j = 0;
    for (int i = 0; i < Q; i++)
    {
        while (j < n && p[j][0] >= q[i][0])
        {
            auto it = upper_bound(all(s), p[j][1]);
            if (it == s.end()) s.pb(p[j][1]);
            else *it = p[j][1];
            j++;
        }
        res[q[i][2]] = upper_bound(all(s), q[i][1]) - s.begin();
    }
    for (int i = 0; i < Q; i++) cout << res[i] << '\n';
}

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