Submission #30758

#	Time	Username	Problem	Language	Result	Execution time	Memory
30758		aybala	Gap (APIO16_gap)	C++11	30 / 100	2000 ms	5144 KiB

gap

#include "gap.h"
#include<bits/stdc++.h>
#define fori(a,b,c) for(int a=b; a<c; a++)
#define ford(a,b,c) for(int a=b; a>=c; a--)
#define ll long long
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define fi first
#define se second
using namespace std;


long long findGap(int T, int N)
{
	if(T==1){
		ll lmn=-1, lmx=1000000000000000001;
		ll ans=0;
		fori(i,0,(N+1)/2){
			ll mn,mx;
			MinMax(lmn+1,lmx-1,&mn,&mx);
			if(i!=0){
				ans=max(ans,mn-lmn);
				ans=max(ans,lmx-mx);
			}
			if(i==(N+1)/2-1){
				ans=max(ans,mx-mn);
			}
			lmn=mn;
			lmx=mx;
			//cout << ans << " " << i << " " << endl;
		}
		return ans;
	}
	ll lmn=-1, lmx=1000000000000000001;
	ll ans=0;
	ll mn,mx;
	MinMax(lmn+1,lmx-1,&mn,&mx);
	lmn=mn;
	lmx=mx;
	if(N==2)
		return mx-mn;
	while(1){
		if(lmn+ans>=lmx)
			break;
		while(1){
			if(lmn+ans>=lmx)
				break;
			MinMax(lmn+1,lmn+ans+1,&mn,&mx);
			if(mn!=-1){
				ans=max(ans,mn-lmn);
				lmn=mn;
			}
			else
				break;
		}
		int canans=ans+1;
		while(1){
			if(lmn+ans>=lmx){
				break;
			}
			MinMax(lmn+canans,lmn+2*canans,&mn,&mx);
			if(mn==-1){
				canans*=2;
				canans+=1;
			}
			else{
				ans=max(ans,mn-lmn);
				lmn=mx;
				break;
			}
		}
	}
	return ans;

}

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