Submission #560906

#	Time	Username	Problem	Language	Result	Execution time	Memory
560906		duypd4206	Gap (APIO16_gap)	C++14	100 / 100	60 ms	1876 KiB

gap

#include "gap.h"
#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int maxn = 1e5 + 2;

ll findGap(int t, int n)
{
    ll a[maxn];
    if(t==1){
        a[0] = -1;
        a[n+1] = 2e18 + 1;
        for(int i = 1, j = n; i <= j; i++,j--)
        {
            MinMax(a[i-1]+1,a[j+1]-1,&a[i],&a[j]);
        }
        ll res = 0;
        for(int i = 1; i < n ; i++)
            res = max(res,abs(a[i+1] - a[i]));
        return res;
    }
    ll mn,mx;
    MinMax(-1,1e18,&mn,&mx);
    if(n == 2) return mx - mn;
    n--;
    ll gap = (mx - mn) / n;
    ll Pre = -1;
    ll res = 0;
    ll t1 = mn, t2 = mx;
    for(ll be = t1; be < t2; be+= gap + 1)
    {
        MinMax(be, be + gap,&mn,&mx);
        if(mn == -1)
            continue;
        if(Pre != -1)
            res = max(res, mn - Pre);
        Pre = mx;
    }
    return res;
}

//int main()
//{
//
//}

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