Submission #17665

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
17665	2016-01-08 17:00:18	ZiyaZa	Divide and conquer (IZhO14_divide)	C++14	100 / 100	69 ms	7580 KiB

divide

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
#include <iostream>
#include <cstdio>
#define pairr pair<long long,int>
#define f first
#define s second
using namespace std;
long long sumg[100010],sume[100010],a;
int n,x[100010],g[100010],e[100010],il,ir;
pairr sl[100010],sr[100010];
long long solve(int l, int r)
{
    if (l==r)
    {
        return g[l];
    }
    if (l==r-1)
    {
        if (e[l]+e[r]>=x[r]-x[l]) return g[l]+g[r];
        return max(g[l],g[r]);
    }
    int mid=(l+r)/2;
    long long ans=max(solve(l,mid),solve(mid+1,r));
    il=0;
    ir=0;
    for (int i=mid;i>=l;i--)
    {
        a=(i==0 ? sume[mid] : sume[mid]-sume[i-1])-(x[mid]-x[i]);
        while (il>0 && a>=sl[il-1].f)
        {
            il--;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

• Subtask 1: 17 / 17
• Subtask 2: 31 / 31
• Subtask 3: 52 / 52