Submission #166841

#	Time	Username	Problem	Language	Result	Execution time	Memory
166841		anubhavdhar	Foehn Phenomena (JOI17_foehn_phenomena)	C++14	100 / 100	691 ms	11768 KiB

foehn_phenomena

#include<bits/stdc++.h>

#define ll long long int 
#define FOR(i,N) for(i=0;i<N;i++)
#define FORe(i,N) for(i=1;i<=N;i++)
#define FORr(i,a,b) for(i=a;i<b;i++)
#define ff first
#define ss second
#define mp make_pair
#define pb push_back
#define vi vector<ll>
#define ii pair<ll,ll>
#define vii vector<ii>

const ll MAXN = 1e5;
const ll LOGN = 17;
const ll ROOTN = 320;
const ll INF = 1e17+21;
const ll MOD = 1e9 + 7;

using namespace std;

ll N,Q,S,T,i,L,R,x,temp = 0;

inline ll TEMPERATURE(ll a)
{
	return ((a < 0)? (- T*a) : (- S*a));
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
    ll prev = 0;
	cin>>N>>Q>>S>>T;
	N++;
	ll A[N];
	FOR(i,N)
	{
		cin>>x;
		A[i] = x - prev;
		prev = x;
		temp += TEMPERATURE(A[i]);//(A[i] < 0) ? (A[i]*T) : (A[i]*S);
	}
	//cout<<"temp now = "<<temp<<endl;
	//FOR(i,N)
	//	cout<<A[i]<<" ";
	//cout<<endl;
	while (Q--)
	{
		cin>>L>>R>>x;
		A[L] += x;
		temp += TEMPERATURE(A[L]) - TEMPERATURE(A[L] - x);
		//cout<<"due to L = "<<L<<"we do temp+="<< TEMPERATURE(A[L]) <<" - "<< TEMPERATURE(A[L] - x)<<"; so temp = "<<temp<<endl;
		if (R<N-1)
		{
			A[R+1] -= x;
			temp += TEMPERATURE(A[R+1]) - TEMPERATURE(A[R+1] + x);
			//cout<<"due to R = "<<L<<"we do temp+="<< TEMPERATURE(A[R+1]) <<" - "<< TEMPERATURE(A[R+1] + x)<<"; so temp = "<<temp<<endl;
		}
		//FOR(i,N)
			//cout<<A[i]<<" ";
		//cout<<endl;
		cout<<temp<<endl;
	}
	return 0;
}

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