Submission #238731

#	Time	Username	Problem	Language	Result	Execution time	Memory
238731		xiryss	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	928 ms	28184 KiB

foehn_phenomena

//#pragma GCC optimize("Ofast,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("fast-math")
/*#pragma GCC optimize("section-anchors")
#pragma GCC optimize("profile-values,profile-reorder-functions,tracer")
#pragma GCC optimize("vpt")
#pragma GCC optimize("rename-registers")
#pragma GCC optimize("move-loop-invariants")
#pragma GCC optimize("unswitch-loops")
#pragma GCC optimize("function-sections")
#pragma GCC optimize("data-sections")
#pragma GCC optimize("branch-target-load-optimize")
#pragma GCC optimize("branch-target-load-optimize2")
#pragma GCC optimize("btr-bb-exclusive")*/
//#pragma comment(linker, "/STACK:367077216")
#define _CRT_SECURE_NO_WARNINGS
#include <chrono>
#include <set>
#include <map>
#include <deque>
#include <string>
#include <cstdint>
#include <cmath>
#include <queue>
#include <cassert>
#include <random>
#include <bitset>
#include <iomanip>
#include <numeric>
#include <time.h>//////////////
#include <ctime>
#include <string>
#include <cstdio>
#include <vector>
#include <cstdlib>
#include <iostream>
#include <algorithm>
#include <unordered_map>
#include <unordered_set>
//++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++
//#define endl '\n'
#define mp make_pair
#define pbc push_back
#define pob pop_back()
#define empb emplace_back
#define queuel queue<long long>
#define sqr(a) ((a) * (a))
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define pin(p) cin >> p.first >> p.second;
#define uniq(a) sort(all(a));(a).resize(unique(all(a)) - a.begin());
#define rev(v) reverse(v.begin(), v.end());
#define sout(s, c) for (auto i : s) cout << i << c;
#define pout(p) cout << p.first << " " << p.second;
#define er(v, l, r) erase(v.begin() + l, v.begin() + r);
#define vin(v) for (ll i = 0; i < v.size(); ++i) cin >> v[i];
#define vout(v, c) for (int i = 0; i < v.size(); ++i) cout << v[i] << c;
#define pushi(v, a) for (int i = 0; i < a.size(); ++i) v.push_back(a[i]);
#define fastio() ios_base::sync_with_stdio(0); cout.tie(0); cin.tie(0); srand(time(NULL))
#define dab(v) for(auto i:v)cout<<i<<' ';
#define sp system("pause")
//++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++
using namespace std;
//++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
//++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++--++
const ld EPS = 1e-9;
const ld EPS2 = 1e-6;
const ld PI = acos(-1);
ll mod = (ll)81273918 * 10000000 + 3623713;
const int MOD7 = 1000000007;
const int MOD9 = 1000000009;
const int a228 = 18;
const int inf = 1e9;
const ll kekmod = 1791791791;
const ll bestmod = 1148822869;
#define int ll
int n, q, s, tt;
const int MAXN = 2e5 + 228;
int t[4 * MAXN][2];
void build(int v, int l, int r, vector<int> & a)
{
	if (l == r - 1)
	{
		t[v][0] = a[l];
		return;
	}
	build(2 * v + 1, l, (l + r) / 2, a);
	build(2 * v + 2, (l + r) / 2, r, a);
}
int add[4 * MAXN][2];
void push(int v, int tp, int l, int r)
{
	if (l != r - 1)
	{
		add[2 * v + 1][tp] += add[v][tp];
		add[2 * v + 2][tp] += add[v][tp];
	}
t[v][tp] += add[v][tp];
	add[v][tp] = 0;
}
void upd(int v, int tp, int l, int r, int ql, int qr, int x)
{
	push(v, tp, l, r);
	if (l >= qr || ql >= r) return;
	if (l >= ql && r <= qr)
	{
		add[v][tp] += x;
		push(v, tp, l, r);
		return;
	}
	upd(2 * v + 1, tp, l, (l + r) / 2, ql, qr, x);
	upd(2 * v + 2, tp, (l + r) / 2, r, ql, qr, x);
}
int get(int v, int tp, int l, int r, int ql, int qr)
{
	push(v, tp, l, r);
	if (l >= qr || ql >= r) return 4e18 + 1;
	if (l >= ql && r <= qr) return t[v][tp];
	int g1 = get(2 * v + 1, tp, l, (l + r) / 2, ql, qr);
	int g2 = get(2 * v + 2, tp, (l + r) / 2, r, ql, qr);
	return min(g1, g2);
}
signed main()
{
	fastio();
	scanf("%lld%lld%lld%lld", &n, &q, &s, &tt);
	vector<int> a(n + 1);
	for (int i = 0; i <= n; ++i)scanf("%lld", &a[i]);
	build(0, 0, a.size(), a);
	int tp = 0;
	upd(0, 1, 0, a.size(), 0, 1, 0);
	for (int i = 1; i <= n; ++i)
	{
		tp += (a[i] > a[i - 1] ? -(a[i] - a[i - 1]) * s : -(a[i] - a[i - 1]) * tt);
		upd(0, 1, 0, a.size(), i, i + 1, tp);
	}
	for (int i = 0; i < q; ++i)
	{
		int l, r, x;
		scanf("%lld%lld%lld", &l, &r, &x);
		a[l] = get(0, 0, 0, a.size(), l, l + 1);
		a[l - 1] = get(0, 0, 0, a.size(), l - 1, l);
		int old = (a[l] > a[l - 1] ? -(a[l] - a[l - 1]) * s : -(a[l] - a[l - 1]) * tt);
		int now = (a[l] + x > a[l - 1] ? -(a[l] + x - a[l - 1]) * s : -(a[l] + x - a[l - 1]) * tt);
		upd(0, 1, 0, a.size(), l, a.size(), now - old);
		if (r < n)
		{
			a[r] = get(0, 0, 0, a.size(), r, r + 1);
			a[r + 1] = get(0, 0, 0, a.size(), r + 1, r + 2);
			old = (a[r + 1] > a[r] ? -(a[r + 1] - a[r]) * s : -(a[r + 1] - a[r]) * tt);
			now = (a[r + 1] > a[r] + x ? -(a[r + 1] - x - a[r]) * s : -(a[r + 1] - a[r] - x) * tt);
			upd(0, 1, 0, a.size(), r + 1, a.size(), now - old);
		}
		upd(0, 0, 0, a.size(), l, r + 1, x);
		cout << get(0, 1, 0, a.size(), n, n + 1) << '\n';
	}
//	sp;
}

Compilation message (stderr)

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:130:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%lld%lld%lld%lld", &n, &q, &s, &tt);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:132:35: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 0; i <= n; ++i)scanf("%lld", &a[i]);
                              ~~~~~^~~~~~~~~~~~~~~
foehn_phenomena.cpp:144:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%lld", &l, &r, &x);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

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