Submission #448938

#	Time	Username	Problem	Language	Result	Execution time	Memory
448938		JovanB	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	165 ms	11500 KiB

foehn_phenomena

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef long double ld;
 
ll niz[1000005];
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.precision(10);
    cout<<fixed;
 
    int n, q;
    cin >> n >> q;
    ll s, t;
    cin >> s >> t;
    int nula;
    cin >> nula;
    int x = 0;
    for(int i=1; i<=n; i++){
        cin >> niz[i];
        int y = niz[i];
        niz[i] = niz[i] - x;
        x = y;
    }
    ll temp = 0;
    for(int i=1; i<=n; i++){
        if(niz[i] > 0) temp -= niz[i]*s;
        else temp -= niz[i]*t;
    }
    while(q--){
        int l, r, x;
        cin >> l >> r >> x;
        if(niz[l] > 0) temp += niz[l]*s;
        else temp += niz[l]*t;
        if(niz[r+1] > 0) temp += niz[r+1]*s;
        else temp += niz[r+1]*t;
        niz[l] += x;
        if(r < n) niz[r+1] -= x;
        if(niz[l] > 0) temp -= niz[l]*s;
        else temp -= niz[l]*t;
        if(niz[r+1] > 0) temp -= niz[r+1]*s;
        else temp -= niz[r+1]*t;
        cout << temp << "\n";
    }
    return 0;
}

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