Submission #1265993

#	Time	Username	Problem	Language	Result	Execution time	Memory
1265993		dhuyyyy	trapezoid (balkan11_trapezoid)	C++20	4 / 100	1096 ms	7136 KiB

trapezoid

#include <bits/stdc++.h>
#define fi first
#define se second
#define int long long
using namespace std;

using ll = long long;
using ii = pair<int,int>;
using pii = pair<int,ii>;
using aa = array<int,4>;

const int N = 1e5+5;
const int INF = 1e9;
const int MOD = 1e9+7;

int n,ans,dp[N];

aa p[N];

vector <int> compress;

struct SMT{
    int n;
    vector<int> t;
    vector<int> lazy;
    SMT(int _n = 0) : n(_n){
        t.assign((n << 2),0);
        lazy.assign((n << 2),0);
    }
    void push(int id,int l,int r){
        if (l == r || !lazy[id]) return;
        for (int i = 0; i <= 1; i++){
            t[id*2+i] += lazy[id];
            lazy[id*2+i] += lazy[id];
        }
        lazy[id] = 0;
    }
    void update(int id,int l,int r,int u,int v){

    }
};
int calc(int val){
    return lower_bound(compress.begin(),compress.end(),val) - compress.begin();
}
/*
p[i][0]: l
p[i][1]: r
p[i][2]: l1
p[i][3]: r1
*/
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
    cin >> n;
    for (int i = 1; i <= n; i++){
        for (int j = 0; j <= 3; j++){
            cin >> p[i][j];
            compress.push_back(p[i][j]);
        }
    }
    sort(p+1,p+1+n);
    sort(compress.begin(),compress.end());
    compress.erase(unique(compress.begin(),compress.end()),compress.end());
    dp[1] = 1;
    for (int i = 2; i <= n; i++){
        for (int j = i - 1; j >= 1; j--){
            if (p[j][1] < p[i][0] && p[j][3] < p[i][2]){
                dp[i] = max(dp[i],dp[j] + 1);
            }
        }
        ans = max(ans,dp[i]);
    }
    cout << ans << ' ' << 0;
    return 0;
}

• Subtask 1: 4 / 100