Submission #553177

#	Time	Username	Problem	Language	Result	Execution time	Memory
553177		fcmalkcin	Gap (APIO16_gap)	C++17	83.51 / 100	60 ms	2708 KiB

gap

#include "gap.h"

#include<bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define ff first
#define ss second
//#define endl "\n"
#define pb push_back
#define F(i,a,b) for(ll i=a;i<=b;i++)

const ll maxn=1e3+5e2+100;
const ll base=3e18;
const ll mod= 1e9+7 ;

mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());


ll findGap(int t,int n)
{
    if (t==1)
    {
        ll l=-1,h=1e18;
        h++;
      //  cout <<h<<endl;
        vector<ll> vt;
        vector<ll> vt1;
        ll mn,mx;
        ll res=0;
       // cout <<l<<" "<<h<<endl;
        for (int i=1; i<=(n+1)/2; i++)
        {
            MinMax(l+1,h-1,&mn,&mx);
            vt.pb(mn);
            vt1.pb(mx);
            l=mn;
            h=mx;
        }
        reverse(vt1.begin(),vt1.end());
        for (auto to:vt1)
            vt.pb(to);
        for (int i=1; i<(ll)vt.size(); i++)
            res=max(res,vt[i]-vt[i-1]);
        return res;
    }
    else
    {
        ll mn,mx;
        MinMax(0,1e18,&mn,&mx);
        ll len=mx-mn;
        ll pt=mx;
        ll h=(len+n-2)/(n-1);
        h--;
        ll l=mn;
        ll pre=base;
        ll res=0;
        while (l<=pt)
        {
            MinMax(l,l+h,&mn,&mx);
            l+=(h+1);
            if (mn!=-1)
            {
                res=max(res,mn-pre);
                pre=mx;
            }
            else
            {

            }
        }
        return res;
    }
}
/*int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen("t.inp","r"))
    {
        freopen("test.inp","r",stdin);
        freopen("test.out","w",stdout);
    }
    cout <<findGap(1,10)<<endl;
}*/

• Subtask 1: 30 / 30
• Subtask 2: 53.5083487467 / 70