제출 #634387

#제출 시각아이디문제언어결과실행 시간메모리
634387xynexFoehn Phenomena (JOI17_foehn_phenomena)C++17
100 / 100
414 ms19804 KiB
/** * Author: Tenjin * Created: 19.08.2022 01:29 * Why am I so stupid? :c * Slishkom slab **/ #include <bits/stdc++.h> #pragma GCC optimize("inline") #pragma GCC optimize("-fgcse,-fgcse-lm") #pragma GCC optimize("-ftree-pre,-ftree-vrp") #pragma GCC optimize("-ffast-math") #pragma GCC optimize("-fipa-sra") #pragma GCC optimize("-fpeephole2") #pragma GCC optimize("-fsched-spec") #pragma GCC optimize("Ofast,no-stack-protector") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native") #pragma GCC optimize("unroll-loops") using namespace std; #define ll long long #define dl double long #define ull unsigned long long #define pr pair #define vt vector #define ff first #define ss second #define mp make_pair #define sz(a) (int)a.size() #define pb push_back #define pf push_front #define popB pop_back #define popF pop_front #define bit_count __builtin_popcount #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define sp(x) fixed << setprecision(x) template<typename T> T get_rand(T l, T r) { random_device rd; mt19937 gen(rd()); return uniform_int_distribution<T>(l, r)(gen); } template<typename T> T lcm(T a, T b) { return a * (b / __gcd(a, b)); } template<class A> void read(vt<A>& v); template<class A, size_t S> void read(array<A, S>& a); template<class T> void read(T& x) { cin >> x; } void read(double& d) { string t; read(t); d = stod(t); } void read(long double& d) { string t; read(t); d = stold(t); } template<class H, class... T> void read(H& h, T&... t) { read(h); read(t...); } template<class A> void read(vt<A>& x) { for (auto& a : x) read(a); } template<class A, size_t S> void read(array<A, S>& x) { for (auto& a : x) read(a); } string to_string(char c) { return string(1, c); } string to_string(bool b) { return b ? "true" : "false"; } string to_string(const char* s) { return string(s); } string to_string(string s) { return s; } string to_string(vt<bool> v) { string res; for (int i = 0; i < sz(v); ++i) res += char('0' + v[i]); return res; } template<size_t S> string to_string(bitset<S> b) { string res; for (int i = 0; i < S; ++i) res += char('0' + b[i]); return res; } template<class T> string to_string(T v) { bool f = 1; string res; for (auto x : v) { if (!f) res += ' '; f = 0; res += to_string(x); } return res; } template<class A> void write(A x) { cout << to_string(x); } template<class H, class... T> void write(const H& h, const T&... t) { write(h); write(t...); } void print() { write("\n"); } template<class H, class... T> void print(const H& h, const T&... t) { write(h); if (sizeof...(t)) write(' '); print(t...); } void freop(string s) { freopen((s + ".in").c_str(), "r", stdin); freopen((s + ".out").c_str(), "w", stdout); } const int MOD = 1e9 + 7; const int N1 = 1e6 + 5; const ll INF = 9e18; const int M = 3e3 + 5; const dl pi = acos(-1); const dl eps = 1e-12; const int sq = 700; int dx[] = {-1, 0, 1, 0}; int dy[] = {0, -1, 0, 1}; /* ll vs int*/ ll A[N1], N; ll t[N1], z[N1]; void build(int tl = 0, int tr = N, int v = 1) { if(tl == tr) { t[v] = A[tl]; return; } int mid = (tl + tr) >> 1; build(tl, mid, v * 2); build(mid + 1, tr, v * 2 + 1); t[v] = t[v * 2] + t[v * 2 + 1]; } void push(int tl, int tr, int v) { if(tl != tr) { z[v * 2] += z[v]; z[v * 2 + 1] += z[v]; } t[v] += (tr - tl + 1) * z[v]; z[v] = 0; } void upd(int l, int r, int ind, int tl = 0, int tr = N, int v = 1) { push(tl, tr, v); if(tl > r || tr < l) return; if(tl >= l && tr <= r) { z[v] += ind; push(tl, tr, v); return; } int mid = (tl + tr) >> 1; upd(l, r, ind, tl, mid, v * 2); upd(l, r, ind, mid + 1, tr, v * 2 + 1); t[v] = t[v * 2] + t[v * 2 + 1]; } ll get(int pos, int tl = 0, int tr = N, int v = 1) { push(tl, tr, v); if(tl == tr) return t[v]; int mid = (tl + tr) >> 1; if(mid >= pos) return get(pos, tl, mid, v * 2); else return get(pos, mid + 1, tr, v * 2 + 1); } void solve() { ll Q, S, T; read(N, Q, S, T); for(int i = 0; i <= N; ++i) read(A[i]); ll ans = 0; for(int i = 1; i <= N; ++i) { if(A[i] >= A[i - 1]) ans -= S * (A[i] - A[i - 1]); else ans += T * (A[i - 1] - A[i]); } build(); while(Q--) { ll l, r, X; read(l, r, X); A[l] = get(l); A[l - 1] = get(l - 1); A[r] = get(r); if(r < N) A[r + 1] = get(r + 1); if(A[l] >= A[l - 1]) ans += S * (A[l] - A[l - 1]); else ans -= T * (A[l - 1] - A[l]); if(r < N) { if(A[r + 1] >= A[r]) ans += S * (A[r + 1] - A[r]); else ans -= T * (A[r] - A[r + 1]); } upd(l, r, X); A[l] = get(l); A[l - 1] = get(l - 1); A[r] = get(r); if(r < N) A[r + 1] = get(r + 1); if(A[l] >= A[l - 1]) ans -= S * (A[l] - A[l - 1]); else ans += T * (A[l - 1] - A[l]); if(r < N) { if(A[r + 1] >= A[r]) ans -= S * (A[r + 1] - A[r]); else ans += T * (A[r] - A[r + 1]); } print(ans); } } int main() { //freop(""); ios::sync_with_stdio(false); cin.tie(0); cout.tie(0); int t = 1; // read(t); for (int i = 1; i <= t; ++i) { //write("Case #" + to_string(i) + ": "); solve(); } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

foehn_phenomena.cpp: In function 'void freop(std::string)':
foehn_phenomena.cpp:72:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foehn_phenomena.cpp:73:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |   freopen((s + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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