제출 #544706

#제출 시각아이디문제언어결과실행 시간메모리
544706SavicSFoehn Phenomena (JOI17_foehn_phenomena)C++17
30 / 100
99 ms10540 KiB
#include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #include <bits/stdc++.h> using namespace std; using namespace __gnu_pbds; typedef long long ll; typedef long double ld; typedef pair<int,int> pii; typedef pair<ll,ll> pll; typedef pair<ld,ld> pdd; #define ff(i,a,b) for(int i = a; i <= b; i++) #define fb(i,b,a) for(int i = b; i >= a; i--) #define trav(a,x) for (auto& a : x) #define sz(a) (int)(a).size() #define pb push_back #define fi first #define se second #define lb lower_bound #define ub upper_bound #define all(a) a.begin(), a.end() #define rall(a) a.rbegin(), a.rend() mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>; // os.order_of_key(k) the number of elements in the os less than k // *os.find_by_order(k) print the k-th smallest number in os(0-based) const int mod = 1000000007; const int inf = 1e9 + 5; const int mxN = 200005; int n, q, S, T; int niz[mxN]; int P[mxN]; int main() { cin.tie(0)->sync_with_stdio(0); cin >> n >> q >> S >> T; ff(i,0,n)cin >> niz[i]; ff(i,1,n)P[i] = niz[i] - niz[i - 1]; ll uk = 0; ff(i,1,n){ if(P[i] >= 0)uk -= 1ll * P[i] * S; else uk -= 1ll * P[i] * T; } while(q--){ int l, r, val; cin >> l >> r >> val; if(P[l] >= 0)uk += 1ll * P[l] * S; else uk += 1ll * P[l] * T; if(r != n){ if(P[r + 1] >= 0)uk += 1ll * P[r + 1] * S; else uk += 1ll * P[r + 1] * T; } P[l] += val; if(r != n)P[r + 1] -= val; if(P[l] >= 0)uk -= 1ll * P[l] * S; else uk -= 1ll * P[l] * T; if(r != n){ if(P[r + 1] >= 0)uk -= 1ll * P[r + 1] * S; else uk -= 1ll * P[r + 1] * T; } cout << uk << '\n'; } return 0; } /* 3 5 1 2 0 4 1 8 1 2 2 1 1 -2 2 3 5 1 2 -1 1 3 5 // probati bojenje sahovski */
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