Submission #1168485

#	Time	Username	Problem	Language	Result	Execution time	Memory
1168485		PlayVoltz	Sjeckanje (COCI21_sjeckanje)	C++20	0 / 110	1 ms	320 KiB

Main

#include <cstdio>
#include <stdio.h>
#include <stdbool.h>
#include <iostream>
#include <map>
#include <vector>
#include <climits>
#include <stack>
#include <string>
#include <queue>
#include <algorithm>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <cmath>
#include <cctype>
#include <bitset>
#include <iomanip>
#include <cstring>
#include <numeric>
#include <cassert>
using namespace std;

#define int long long
#define pii pair<int, int>
#define mp make_pair
#define pb push_back
#define fi first
#define se second

struct node{
	int s, e, m, val[2][2];
	node *l, *r;
	
	node(int S, int E){
		s = S, e = E, m = (s+e)/2;
		val[0][0]=val[0][1]=val[1][0]=val[1][1]=0;
		if (s!=e){
			l = new node(s, m);
			r = new node(m+1, e);
		}
	}
	void up(int ind, int nv, bool t){
		if (s==e)val[t][t]=nv, val[!t][!t]=val[t][!t]=val[!t][t]=0;
		else{
			if (ind<=m)l->up(ind, nv, t);
			else r->up(ind, nv, t);
			int a[2][2], b[2][2];
			
			a[0][0]=l->val[0][0];
			a[0][1]=l->val[0][1];
			a[1][0]=l->val[1][0];
			a[1][1]=l->val[1][1];
			b[0][0]=r->val[0][0];
			b[0][1]=r->val[0][1];
			b[1][0]=r->val[1][0];
			b[1][1]=r->val[1][1];
			
			val[0][0]=val[0][1]=val[1][0]=val[1][1]=0;
			val[0][0]=max({a[0][0]+max(b[0][0], b[1][0]),  max(a[0][1], a[0][0])+b[0][0]});
			val[1][1]=max({a[1][0]+max(b[0][1], b[1][1]),  max(a[1][1], a[1][0])+b[0][1]});
			val[0][1]=max({a[0][0]+max(b[0][1], b[1][1]),  max(a[0][1], a[0][0])+b[0][1]});
			val[1][0]=max({a[1][0]+max(b[0][0], b[1][0]),  max(a[1][1], a[1][0])+b[0][0]});
		}
	}
}*st;

struct node2{
	int s, e, m, val, lazy;
	node2 *l, *r;
	void create(){
		if (l==nullptr){
			l = new node2(s, m);
			r = new node2(m+1, e);
		}
	}
	void propagate(){
		val+=lazy*(e-s+1);
		if (s!=e){
			create();
			l->lazy+=lazy;
			r->lazy+=lazy;
		}
		lazy=0;
	}
	node2(int S, int E){
		s = S, e = E, m = (s+e)/2;
		val=lazy=0;
		l=r=nullptr;
	}
	void up(int left, int right, int v){
		propagate();
		if (s==left && e==right)lazy+=v;
		else{
			create();
			if (right<=m)l->up(left, right, v);
			else if (left>m)r->up(left, right, v);
			else l->up(left, m, v), r->up(m+1, right, v);
			r->propagate(), l->propagate();
			val=l->val+r->val;
		}
		
	}
	int query(int left, int right){
		propagate();
		if (s==left && e==right)return val;
		create();
		if (right<=m)return l->query(left, right);
		else if (left>m)return r->query(left, right);
		else return l->query(left, m)+r->query(m+1, right);
	}
}*st2;

int32_t main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n, q, a, b, c;
	cin>>n>>q;
	if (n==1){
		while (q--)cout<<"0\n";
	}
	st = new node(2, n);
	st2 = new node2(1, n);
	vector<int> vect(n+1);
	for (int i=1; i<=n; ++i)cin>>vect[i], st2->up(i, i, vect[i]);
	
	for (int i=2; i<=n; ++i){
		bool t=0;
		if (1<i&&i<n)t=((vect[i-1]<vect[i]&&vect[i+1]<vect[i])||(vect[i-1]>vect[i]&&vect[i+1]>vect[i]));
		if (!t&&1<=i-2&&i<=n)t=((vect[i-2]<vect[i-1]&&vect[i]<vect[i-1])||(vect[i-2]>vect[i-1]&&vect[i]>vect[i-1]));
		st->up(i, abs(vect[i]-vect[i-1]), t);
	}
	while (q--){
		cin>>a>>b>>c;
		st2->up(a, b, c);
		bool ta=0, tb=0;
		if (1<a&&a<n)ta=((st2->query(a-1, a-1)<st2->query(a, a)&&st2->query(a+1, a+1)<st2->query(a, a))||(st2->query(a-1, a-1)>st2->query(a, a)&&st2->query(a+1, a+1)>st2->query(a, a)));
		if (!ta&&1<=a-2&&a<=n)ta=((st2->query(a-2, a-2)<st2->query(a-1, a-1)&&st2->query(a, a)<st2->query(a-1, a-1))||(st2->query(a-2, a-2)>st2->query(a-1, a-1)&&st2->query(a, a)>st2->query(a-1, a-1)));
		if (1<b&&b<n)tb=((st2->query(b-1, b-1)<st2->query(b, b)&&st2->query(b+1, b+1)<st2->query(b, b))||(st2->query(b-1, b-1)>st2->query(b, b)&&st2->query(b+1, b+1)>st2->query(b, b)));
		if (!tb&&1<=b&&b+2<=n)tb=((st2->query(b, b)<st2->query(b+1, b+1)&&st2->query(b+2, b+2)<st2->query(b+1, b+1))||(st2->query(b, b)>st2->query(b+1, b+1)&&st2->query(b+2, b+2)>st2->query(b+1, b+1)));
		if (a>1)st->up(a, abs(st2->query(a, a)-st2->query(a-1, a-1)), ta);
		if (b<n)st->up(b+1, abs(st2->query(b, b)-st2->query(b+1, b+1)), tb);
		cout<<max({st->val[0][0], st->val[0][1], st->val[1][0], st->val[1][1]})<<"\n";
	}
}

• Subtask 1: 0 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 55