Submission #722797

#	Time	Username	Problem	Language	Result	Execution time	Memory
722797		n0sk1ll	Gap (APIO16_gap)	C++14	64.63 / 100	52 ms	1088 KiB

gap

#include <bits/stdc++.h>

#define FAST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);cerr.tie(0)
#define mp make_pair
#define xx first
#define yy second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define all(x) x.begin(),x.end()
#define ff(i,a,b) for (int i = a; i < b; i++)
#define fff(i,a,b) for (int i = a; i <= b; i++)
#define bff(i,a,b) for (int i = b-1; i >= a; i--)
#define bfff(i,a,b) for (int i = b; i >= a; i--)

using namespace std;
long double typedef ld;
unsigned int typedef ui;
long long int typedef li;
pair<int,int> typedef pii;
pair<li,li> typedef pli;
pair<ld,ld> typedef pld;
vector<vector<int>> typedef graph;
unsigned long long int typedef ull;
//const int mod = 998244353;
const int mod = 1000000007;







//Note to self: Check for overflow

#include "gap.h"

li solve3v(int n)
{
    li ans=0;
    li l=-1,r=1'000'000'000'000'000'001ll;
    ff(i,0,(n+1)/2)
    {
        li mn,mx;
        MinMax(l+1,r-1,&mn,&mx);
        if (l!=-1) ans=max(ans,max(mn-l,r-mx));
        //cout<<": "<<l<<" "<<mn<<" "<<mx<<" "<<r<<endl;
        l=mn,r=mx;
    }
    return max(ans,r-l);
}

li solve(int n)
{
    li l=-1,r=1'000'000'000'000'000'001ll;
    li mn,mx; MinMax(l+1,r+1,&mn,&mx);
    if (n==2) return mx-mn;
    l=mn,r=mx;

    li gap=1,maygap;
    while (true)
    {
        maygap=gap;
        while (true)
        {
            maygap=min(maygap,r-l);
            MinMax(l+1,l+maygap,&mn,&mx);
            if (mx==-1) maygap*=2;
            else
            {
                gap=max(gap,mn-l);
                l=mx; break;
            }
        }
        if (l>=r) break;
    }

    return gap;
}

li findGap(int T, int N)
{
	if (T==1) return solve3v(N);
	return solve(N);
}

/*

2 4
2 3 6 8

*/

• Subtask 1: 30 / 30
• Subtask 2: 34.6316307611 / 70