Submission #1198470

#	Time	Username	Problem	Language	Result	Execution time	Memory
1198470		PlayVoltz	Foehn Phenomena (JOI17_foehn_phenomena)	C++20	100 / 100	602 ms	30764 KiB

foehn_phenomena

#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, lazy;
	node *l, *r;
	void create(){
		if (l==nullptr){
			l = new node(s, m);
			r = new node(m+1, e);
		}
	}
	void propagate(){
		val+=lazy*(e-s+1);
		if (s!=e){
			create();
			l->lazy+=lazy;
			r->lazy+=lazy;
		}
		lazy=0;
	}
	node(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);
	}
}*st;

int32_t main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int n, q, s, t, a, b, c, ans=0;
	cin>>n>>q>>s>>t;
	vector<int> vect(n+1);
	st = new node(0, n);
	for (int i=0; i<=n; ++i){
		cin>>vect[i];
		st->up(i, i, vect[i]);
		if (i){
			if (vect[i-1]<vect[i])ans-=(vect[i]-vect[i-1])*s;
			else ans+=(vect[i-1]-vect[i])*t;
		}
	}
	while (q--){
		cin>>a>>b>>c;
		int lp = st->query(a-1, a-1), l=st->query(a, a), r=st->query(b, b), rp=LLONG_MIN/2;
		if (b!=n)rp=st->query(b+1, b+1);
		if (c>0){
			ans-=min(c, max(0ll, lp-l))*t;
			ans-=(c-min(c, max(0ll, lp-l)))*s;
			if (rp!=LLONG_MIN/2){
				ans+=min(c, max(0ll, rp-r))*s;
				ans+=(c-min(c, max(0ll, rp-r)))*t;
			}
		}
		else{
			ans+=min(-c, max(0ll, l-lp))*s;
			ans+=(-c-min(-c, max(0ll, l-lp)))*t;
			if (rp!=LLONG_MIN/2){
				ans-=min(-c, max(0ll, r-rp))*t;
				ans-=(-c-min(-c, max(0ll, r-rp)))*s;
			}
		}
		st->up(a, b, c);
		cout<<ans<<"\n";
	}
}

• Subtask 1: 30 / 30
• Subtask 2: 10 / 10
• Subtask 3: 60 / 60