Submission #123529

#	Time	Username	Problem	Language	Result	Execution time	Memory
123529		MvC	Two Antennas (JOI19_antennas)	C++11	0 / 100	432 ms	40184 KiB

antennas

#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#include<bits/stdc++.h>
//#include "rail.h"
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=2e5+50;
const int mod=1e9+7;
using namespace std;
ll n,i,q,l[nmax],r[nmax],x,y,h[nmax],ans;
multiset<ll>e[nmax],ad[nmax],s;
multiset<ll>::iterator it;
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n;
	for(i=1;i<=n;i++)cin>>h[i]>>l[i]>>r[i];
	cin>>q;
	while(q--)
	{
		cin>>x>>y;
		for(i=x;i<=y;i++)
		{
			ad[l[i]].in(h[i]);
			e[r[i]+1].in(h[i]);
		}
		ans=-1;
		s.clear();
		for(i=1;i<=n;i++)
		{
			for(it=ad[i].begin();it!=ad[i].end();it++)s.in((*it));
			for(it=e[i].begin();it!=e[i].end();it++)s.er(s.fd((*it)));
			if((int)s.size()>1)ans=max(ans,(*s.rbegin())-(*s.begin()));
			ad[i].clear();
			e[i].clear();
		}
		e[n+1].clear();
		cout<<ans<<'\n';
	}
	return 0;
}

Compilation message (stderr)

antennas.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("O3")
 
antennas.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops")

• Subtask 1: 0 / 2
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 65