Submission #707062

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
707062	2023-03-08 11:15:02	lam	Progression (NOI20_progression)	C++14	100 / 100	1500 ms	119488 KiB

Progression

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#include <bits/stdc++.h>
#define int long long
using namespace std;
const int inf = (int)1e18;
const int maxn = 3e5 + 10;
int n,m;
int D[maxn];
struct node
{
    int pre,suf,val_l,val_r,sz,ans;
};
node hop(node x, node y)
{
    if (x.val_l==-1e18) return y;
    if (y.val_l==-1e18) return x;
    node cur;
    cur.sz=x.sz+y.sz;
    cur.ans=max(x.ans,y.ans);
    if (x.val_r==y.val_l) cur.ans=max(cur.ans,x.suf+y.pre);
    cur.val_l=x.val_l; cur.val_r=y.val_r;
    cur.pre = x.pre;
    if (x.sz==x.pre&&x.val_r==y.val_l) cur.pre=max(cur.pre,x.sz+y.pre);
    else cur.pre=x.pre;
    cur.suf = y.suf;
    if (y.sz==y.suf&&x.val_r==y.val_l) cur.suf=max(cur.suf,y.sz+x.suf);
    return cur;
}
node none = {0,0,-inf,-inf,0,0};
struct segtree
{
 
 
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• Subtask 1: 9 / 9
• Subtask 2: 15 / 15
• Subtask 3: 35 / 35
• Subtask 4: 11 / 11
• Subtask 5: 13 / 13
• Subtask 6: 17 / 17