Submission #332862

#	Time	Username	Problem	Language	Result	Execution time	Memory
332862		limabeans	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	30 / 100	1087 ms	3692 KiB

foehn_phenomena

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

template<typename T>
void out(T x) { cout << x << endl; exit(0); }
#define watch(x) cout << (#x) << " is " << (x) << endl





using ll = long long;


const int maxn = 1e6 + 5;


ll n,q,s,t;

ll a[maxn];

int main() {
    ios_base::sync_with_stdio(false); cin.tie(0);  cout.tie(0);

    cin>>n>>q>>s>>t;
    for (int i=0; i<=n; i++) {
	cin>>a[i];
    }

    ++n;

    while (q--) {
	ll l,r,x;
	cin>>l>>r>>x;
	for (int i=l; i<=r; i++) {
	    a[i] += x;
	}

	ll res = 0;
	for (int i=0; i+1<n; i++) {
	    if (a[i]<a[i+1]) {
		res -= (a[i+1]-a[i])*s;
	    } else {
		res += (a[i]-a[i+1])*t;
	    }
	}
	cout<<res<<"\n";
    }
    
    
    return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 0 / 10
• Subtask 3: 0 / 60