Submission #1030249

#	Time	Username	Problem	Language	Result	Execution time	Memory
1030249		vjudge1	Exhibition (JOI19_ho_t2)	C++17	0 / 100	0 ms	600 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<pii> v;
	for(int i=0;i<n;i++)
	{
		int x=lower_bound(b,b+m,a[i].se)-b;
		pii p={a[i].se,x};
		int y=lower_bound(all(v),p)-v.begin();
		if(y==v.size())
		{
			if(y-1>=0) x=max(x,v[y-1].se+1);
			if(x!=m) v.pb({a[i].se,x});
		}
		else if(v[y]==p)
		{
		    p={a[i].se,1e9};
		    y=upper_bound(all(v),p)-v.begin();
		    if(y==v.size())
    		{
    			if(y-1>=0) x=max(x,v[y-1].se+1);
    			if(x!=m) v.pb({a[i].se,x});
    		}
    		else
    		{
    			if(y-1>=0) x=max(x,v[y-1].se+1);
    			if(x!=m) v[y]={a[i].se,x};
    		}
		}
		else
		{
			if(y-1>=0) x=max(x,v[y-1].se+1);
			if(x!=m) v[y]={a[i].se,x};
		}
// 		for(auto j : v) cout<<j.fi<<' '<<j.se<<'\n';cout<<'\n';
	}
	cout<<v.size();
	return 0;
}

Compilation message (stderr)

joi2019_ho_t2.cpp: In function 'int main()':
joi2019_ho_t2.cpp:32:7: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |   if(y==v.size())
      |      ~^~~~~~~~~~
joi2019_ho_t2.cpp:41:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |       if(y==v.size())
      |          ~^~~~~~~~~~

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