Submission #203937

#	Time	Username	Problem	Language	Result	Execution time	Memory
203937		Segtree	Gap (APIO16_gap)	C++14	0 / 100	57 ms	1912 KiB

gap

#include<iostream>
#include<algorithm>
#include<vector>
#include"gap.h"
using namespace std;
typedef long long ll;
#define chmin(a,b) a=min(a,b)
#define chmax(a,b) a=max(a,b)
#define rep(i,n) for(int i=0;i<n;i++)
#define mod 1000000007
#define mad(a,b) a=(a+b)%mod
/*
ll a[100010],n,m;
void MinMax(ll s,ll t,ll &mn,ll &mx){
	m++;
	ll l,r,mid;
	l=-1,r=n;
	while(l<r-1){
		mid=(l+r)>>1;
		if(a[mid]>=s)r=mid;
		else l=mid;
	}
	mn=a[r];
	l=-1,r=n;
	while(l<r-1){
		mid=(l+r)>>1;
		if(a[mid]<=t)l=mid;
		else r=mid;
	}
	mx=a[l];
}*/

ll findGap(int T,int N){
	ll A[100010];
	A[0]=-1,A[N+1]=2e18;
	ll mn,mx;
	MinMax(A[0]+1,A[N+1]-1,&mn,&mx);
	A[1]=mn,A[N]=mx;
	for(int i=1;i<=N-1;i++){
		MinMax(A[i]+1,A[i]+1,&mn,&mx);
		A[i+1]=mn;
	}
	//for(int i=0;i<=N+1;i++)cout<<i<<":"<<A[i]<<endl;
	ll ans=0;
	for(int i=1;i<=N-1;i++)ans=max(ans,A[i+1]-A[i]);
	return ans;
}
/*
int main(){
	n=100000;
	rep(i,n)a[i]=rand()%mod;
	sort(a,a+n);
	ll ans=0;
	rep(i,n-1)chmax(ans,a[i+1]-a[i]);
	m=0;
	cout<<ans<<endl;
	cout<<findGap(0,n)<<endl;
	cout<<"m="<<m<<endl;
}*/

• Subtask 1: 0 / 30
• Subtask 2: 0 / 70