Submission #532797

#	Time	Username	Problem	Language	Result	Execution time	Memory
532797		new_acc	Gap (APIO16_gap)	C++14	100 / 100	68 ms	1084 KiB

gap

#include "gap.h"
#include<bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=1e3+10;
ll solve1(int n){
	ll mn,mx;
	ll curr1=0,curr2=1e18,last1=-1,last2=-1;
	ll res=0;
	for(int i=1;i<=(n+1)/2;i++){
		MinMax(curr1,curr2,&mn,&mx);	
		if(last1!=-1) res=max({res,mn-last1,last2-mx});
		last1=mn,last2=mx;
		curr1=mn+1,curr2=mx-1;
	}
	return (n%2==0?max(res,last2-last1):res);
}
ll solve2(int n){
	if(n<=6) return solve1(n);
	ll mn,mx;
	MinMax(0,1e18,&mn,&mx);
	ll last=mx;
	ll minim=(mx-mn)/(n-1LL);
	ll curr=mn,res=minim;
	for(ll i=curr+1;i<=last;i+=minim+1){
		MinMax(i,i+minim,&mn,&mx);
		if(mx==-1) continue;
		res=max(res,mn-curr);
		curr=mx;
	}
	return res;
}
ll findGap(int xd,int n){
	if(xd==1) return solve1(n);
	else return solve2(n);
}
	 

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