Submission #406731

#	Time	Username	Problem	Language	Result	Execution time	Memory
406731		arwaeystoamneg	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	164 ms	5912 KiB

foehn_phenomena

// EXPLOSION!
#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include<unordered_set>
#include<unordered_map>
#include<chrono>

using namespace std;
typedef pair<int, int> pii;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pair<int, int>> vpi;
typedef vector<pair<ll, ll>> vpll;

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

#define pb push_back
#define mp make_pair
#define rsz resize
#define sz(x) int(x.size())
#define all(x) x.begin(),x.end()
#define f first
#define s second
#define cont continue
#define endl '\n'
//#define ednl '\n'
#define test int testc;cin>>testc;while(testc--)
#define pr(a, b) trav(x,a)cerr << x << b; cerr << endl;
#define message cout << "Hello World" << endl;
const int dx[4] = { 1,0,-1,0 }, dy[4] = { 0,1,0,-1 }; // for every grid problem!!
const ll linf = 4000000000000000000LL;
const ll inf = 1000000007;//998244353    

void pv(vi a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vll a) { trav(x, a)cout << x << " "; cout << endl; }void pv(vector<vi>a) {
	F0R(i, sz(a)) { cout << i << endl; pv(a[i]); cout << endl; }
}void pv(vector<vll>a) { F0R(i, sz(a)) { cout << i << endl; pv(a[i]); }cout << endl; }void pv(vector<string>a) { trav(x, a)cout << x << endl; cout << endl; }
void setIO(string s) {
	ios_base::sync_with_stdio(0); cin.tie(0);
#ifdef arwaeystoamneg
	if (sz(s))
	{
		freopen((s + ".in").c_str(), "r", stdin);
		if (s != "test1")
			freopen((s + ".out").c_str(), "w", stdout);
	}
#endif
}
const int MAX = 200005;
int n, q, s, t;
ll a[MAX];
ll ans = 0;
ll count(int i)
{
	ll d = a[i];
	return (d > 0 ? s : t) * abs(d);
}
int main()
{
	setIO("test1");
	cin >> n >> q >> s >> t;
	s = -s;
	F0R(i, n + 1)cin >> a[i];
	F0R(i, n + 1)a[i] = a[i + 1] - a[i];
	F0R(i, n)ans += count(i);
	while (q--)
	{
		int x, y, z;
		cin >> x >> y >> z;
		ans -= count(x - 1);
		a[x - 1] += z;
		ans += count(x - 1);
		if (y < n)
			ans -= count(y);
		a[y] -= z;
		if (y < n)
			ans += count(y);
		cout << ans << endl;
	}
}

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