Submission #1030026

#	Time	Username	Problem	Language	Result	Execution time	Memory
1030026		vjudge1	Exhibition (JOI19_ho_t2)	C++17	0 / 100	1 ms	348 KiB

joi2019_ho_t2

#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define ld long double
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pld pair<ld, ld>
#define pb push_back
#define fi first
#define se second
#define debug(x) cout << #x << " => " << x << endl
#define all(x) x.begin(),x.end()

int main()
{
	ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
	int n,m;cin>>n>>m;
	pii a[n];
	int b[m];
	for(int i=0;i<n;i++) cin>>a[i].se>>a[i].fi;
	for(int i=0;i<m;i++) cin>>b[i];
	sort(a,a+n);
	sort(b,b+m);

	vector<int> v,idx;
	for(int i=0;i<n;i++)
	{
		int x1=lower_bound(b,b+m,a[i].se)-b,x2=x1;
		int y1=lower_bound(all(v),a[i].se)-v.begin(),y2=upper_bound(all(v),a[i].se)-v.begin();
		if(y1>0) x1=max(x1,idx[y1-1]+1);
		if(y1!=v.size() && idx[y1]>x1)
		{
			v[y1]=a[i].se;
			idx[y1]=x1;
			continue;
		}
		if(y2>0) x2=max(x2,idx[y2-1]+1);
		if(x2==m) continue;
		if(y2==v.size())
		{
			v.pb(a[i].se);
			idx.pb(x2);
		}
		else
		{
			v[y2]=a[i].se;
			idx[y2]=x2;
		}
		// for(auto j : v) cout<<j<<' ';cout<<'\n';
		// for(auto j : idx) cout<<j<<' ';cout<<'\n';
	}
	cout<<v.size();
	return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:32:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |   if(y1!=v.size() && idx[y1]>x1)
      |      ~~^~~~~~~~~~
joi2019_ho_t2.cpp:40:8: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |   if(y2==v.size())
      |      ~~^~~~~~~~~~

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