Submission #230022

#	Time	Username	Problem	Language	Result	Execution time	Memory
230022		nickmet2004	Foehn Phenomena (JOI17_foehn_phenomena)	C++11	100 / 100	521 ms	11768 KiB

foehn_phenomena

#include<bits/stdc++.h>

typedef long long ll;
using namespace std;

const int N = 2e5 + 500;

ll n , Q , S , T;
ll d[N];
ll pos , neg , last;

void upd(int p , ll X){
    if(p > n) return;
    if(d[p] > 0) pos -= d[p];
    else neg += d[p];
    d[p] += X;
    if(d[p] > 0) pos += d[p];
    else neg -= d[p];
}

int main (){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n >> Q >> S >> T;
    for(int i = 0; i <= n; ++i){
        cin >> d[i];
        d[i] -= last;
        if(d[i] > 0) pos += d[i];
        else neg -= d[i];
        last += d[i];
    }
    while(Q--){
        int l , r;
        ll x;
        cin >> l >> r >> x;
        upd(l , x); upd(r + 1 , -x);
        cout << ll(neg*T - pos * S) << endl;
    }


}

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