Submission #535368

#	Time	Username	Problem	Language	Result	Execution time	Memory
535368		amunduzbaev	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	417 ms	13044 KiB

foehn_phenomena

#include "bits/stdc++.h"
using namespace std;

#define ar array
#define int long long
const int N = 2e5 + 5;
int a[N], d[N];

signed main(){
	ios::sync_with_stdio(0); cin.tie(0);
	
	int n, q, s, t; cin>>n>>q>>s>>t;
	int res = 0;
	auto add = [&](int i, int f){
		if(i>n) return;
		if(d[i]>0) res-=s*d[i]*f;
		else res-=t*d[i]*f;
	};
	for(int i=0;i<=n;i++){
		cin>>a[i];
		if(i) d[i] = a[i] - a[i-1];
		add(i, 1);
	}
	
	while(q--){
		int l,r,x;
		cin>>l>>r>>x;
		add(l,-1);
		add(r+1,-1);
		d[l]+=x;
		d[r+1]-=x;
		add(l,1);
		add(r+1,1); cout<<res<<endl;
	}
}

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