Submission #1002667

#	Time	Username	Problem	Language	Result	Execution time	Memory
1002667		mansur	Foehn Phenomena (JOI17_foehn_phenomena)	C++17	100 / 100	97 ms	13244 KiB

foehn_phenomena

//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")
 
#include<bits/stdc++.h>	
 
using namespace std;
 
#define all(a) a.begin(), a.end()                                                   
#define rall(a) a.rbegin(), a.rend()                 
#define sz(a) (int)a.size()
#define s second
#define f first
 
using ll = long long;
using pii = pair<int, int>;                                                                                  
using pll = pair<ll, ll>;                                                                                    
                                                                                                             
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());                                      
     
vector<pii> rid = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
vector<pii> dir = {{-1, -1}, {-1, 1}, {1, -1}, {1, 1}};
 
const int N = 5e6 + 1, mod = 998244353;
 
const ll inf = 1e9;
 
double eps = 1e-15;
                                                
bool flg = 0;

void slv() {
	int n, q, s, t;
	cin >> n >> q >> s >> t;
	ll a[n + 1], b[n + 1];
	cin >> a[0];
	ll ans = 0;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		b[i] = a[i] - a[i - 1];
		if (b[i] > 0) ans -= s * b[i];
		else ans -= t * b[i];
	}
	while (q--) {
		int l, r, x;
		cin >> l >> r >> x;
		if (b[l] > 0) ans += s * b[l];
		else ans += t * b[l];
		b[l] += x;
		if (b[l] > 0) ans -= s * b[l];
		else ans -= t * b[l];
		if (r < n) {
			if (b[r + 1] > 0) ans += s * b[r + 1];
			else ans += t * b[r + 1]; 
			b[r + 1] -= x;
			if (b[r + 1] > 0) ans -= s * b[r + 1];
			else ans -= t * b[r + 1]; 
		}
		cout << ans << '\n';
	}
}

main() {
	//freopen("input.txt", "r", stdin);                                                                                     
	//freopen("output.txt", "w", stdout);                                                                                     
	ios_base::sync_with_stdio(0);	                                                                                       
	cin.tie(0);
	int tp = 1;
	if (flg) cin >> tp;
	while (tp--) {  	
		slv();
	}
}
//wenomechainsama      

Compilation message (stderr)

foehn_phenomena.cpp:62:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   62 | main() {
      | ^~~~

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