Submission #919544

#	Time	Username	Problem	Language	Result	Execution time	Memory
919544		iskhakkutbilim	Exhibition (JOI19_ho_t2)	C++17	0 / 100	0 ms	344 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;
 
#define ff first
#define ss second
#define all(a) a.begin(), a.end()
const int mod = 1e9 + 7;
const int N = 1e5;
#define int long long
 
 
 
 
struct node{
    int mn;
};
node UND =  {mod};
struct Segtree{
  int n;
  vector<node> t;
  Segtree(int sz){
    n = sz;
    t.resize(n * 4, UND);
  };
  node merge(node A, node B){
	 if(A.mn < B.mn) return A;
	 return B;
  }
  
  void update(int pos, int x, int v, int vl, int vr){
    if(vl == vr){
		t[v].mn = min(t[v].mn, x);
		return;
	}
	int mid = (vl + vr)>>1;
	if(mid >= pos) update(pos, x, v<<1, vl, mid);
	else update(pos, x, v<<1|1, mid+1, vr);
    t[v] = merge(t[v<<1], t[v<<1|1]);
  }
  node get(int l, int r, int v, int vl, int vr){
    if(l > vr or vl > r) return UND;
    if(l <= vl and r >= vr) return t[v];
    int mid = (vl + vr)>>1;
    return merge(get(l, r, v<<1, vl, mid), get(l, r, v<<1|1, mid+1, vr));
  }  
};
 
 
 
 
 
 
 
signed main(){
	ios::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	int n, m; cin >> n >> m;
	vector< array<int, 2> > a(n);
	for(int i = 0;i < n; i++){
		cin >> a[i][0] >> a[i][1];
	}
	sort(all(a), [&](auto A, auto B){
		return A[1] < B[1];
	});
	vector<int> frame(m);
	for(auto &e : frame) cin >> e; 
	sort(all(frame));
	reverse(all(frame));
	
	
	
	int ans = 0;
	for(int i = 0;i < m; i++){
		while(a.size() && a.back()[0] > frame[i]) a.pop_back();
		if(!a.size()) break;
		ans++;
		a.pop_back();
	}
	cout << ans;
		
	return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 40
• Subtask 3: 0 / 50