제출 #718444

#제출 시각아이디문제언어결과실행 시간메모리
718444arush_aguFoehn Phenomena (JOI17_foehn_phenomena)C++17
100 / 100
160 ms15872 KiB
#include <algorithm> #include <cctype> #include <cmath> #include <cstdio> #include <cstring> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #include <functional> #include <iomanip> #include <iostream> #include <iterator> #include <list> #include <map> #include <numeric> #include <queue> #include <set> #include <sstream> #include <stack> #include <string> #include <unordered_map> #include <unordered_set> #include <vector> #ifdef DEBUG #include <time.h> #endif #define all(a) (a).begin(), (a).end() #define rev(a) (a).rbegin(), (a).rend() #define F first #define S second int recur_depth = 0; #ifdef DEBUG #define dbg(x) \ { \ ++recur_depth; \ auto x_ = x; \ --recur_depth; \ cerr << string(recur_depth, '\t') << "\e[91m" << __func__ << ":" \ << __LINE__ << "\t" << #x << " = " << x_ << "\e[39m" << endl; \ } #else #define dbg(x) #endif using namespace std; using namespace __gnu_pbds; typedef pair<int, int> ii; typedef long long ll; typedef long double ld; typedef pair<ll, ll> llll; typedef vector<int> vi; typedef vector<vi> vvi; typedef vector<pair<int, int>> vii; typedef vector<vii> vvii; typedef vector<ll> vl; typedef vector<vl> vvl; typedef vector<pair<ll, ll>> vll; typedef vector<vll> vvll; typedef vector<bool> vb; template <class type1> using ordered_set = tree<type1, null_type, less<type1>, rb_tree_tag, tree_order_statistics_node_update>; template <typename A, typename B> ostream &operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; } template <typename T_container, typename T = typename enable_if< !is_same<T_container, string>::value, typename T_container::value_type>::type> ostream &operator<<(ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << '}'; } const ll MOD = 1e9 + 7; // const ll MOD = 998244353; const ll INF = 1e9; const ld EPS = 1e-9; struct FT { int n; vl t; void init(int n_) { n = n_; t = vl(n + 1); } void upd(int idx, ll v) { for (idx++; idx<=n; idx += idx & -idx) t[idx] += v; } ll query(int idx) { ll res = 0; for (idx++; idx>0; idx -= idx & -idx) res += t[idx]; return res; } void upd(int l, int r, ll v) { upd(l, v); upd(r + 1, -v); } } ft1, ft2; void solve() { ll n, q, s, t; cin >> n >> q >> s >> t; vl h(n + 1); for (ll &x : h) cin >> x; ft1.init(n + 2); ft2.init(n + 2); for (int i=0; i<=n; i++) ft1.upd(i, i, h[i]); vl temp(n + 1); for (int i=1; i<=n; i++) { if (h[i - 1] < h[i]) temp[i] = temp[i - 1] - (h[i] - h[i - 1]) * s; else temp[i] = temp[i - 1] + (h[i - 1] - h[i]) * t; ft2.upd(i, i, temp[i]); } auto increase = [&](int idx, ll v) { ll ph = ft1.query(idx - 1), ch = ft1.query(idx); ft1.upd(idx, n, v); if (ph <= ch) { ft2.upd(idx, n, -v * s); return; } ll fv = ph - ch; if (v < fv) { ft2.upd(idx, -v * t); return; } ft2.upd(idx, n, -fv * t); ft2.upd(idx, n, -(v - fv) * s); }; auto decrease = [&](int idx, ll v) { ll ph = ft1.query(idx - 1), ch = ft1.query(idx); ft1.upd(idx, n, -v); if (ph >= ch) { ft2.upd(idx, n, v * t); return; } ll fv = ch - ph; if (v < fv) { ft2.upd(idx, v * s); return; } ft2.upd(idx, n, fv * s); ft2.upd(idx, n, (v - fv) * t); }; while (q--) { int l, r; ll d; cin >> l >> r >> d; if (d == 0) { cout << ft2.query(n) << "\n"; continue; } // cerr << "L: " << l << " R: " << r << " D: " << d << "\n"; // cerr << "\tH: {"; for (int i=0; i<=n; i++) cerr << ft1.query(i) << ","; cerr << "}\n"; // cerr << "\tT: {"; for (int i=0; i<=n; i++) cerr << ft2.query(i) << ","; cerr << "}\n"; if (d > 0) { increase(l, d); decrease(r + 1, d); } else { decrease(l, -d); increase(r + 1, -d); } // cerr << "\tNH: {"; for (int i=0; i<=n; i++) cerr << ft1.query(i) << ","; cerr << "}\n"; // cerr << "\tNT: {"; for (int i=0; i<=n; i++) cerr << ft2.query(i) << ","; cerr << "}\n"; cout << ft2.query(n) << "\n"; } } int main() { ios_base::sync_with_stdio(0); cin.tie(NULL); clock_t start = clock(); int test_cases = 1; /* cin >> test_cases; */ while (test_cases--) solve(); #ifdef DEBUG cerr << fixed << setprecision(10) << "\nTime Taken: " << (double)(clock() - start) / CLOCKS_PER_SEC << "s\n"; #endif return 0; }

컴파일 시 표준 에러 (stderr) 메시지

foehn_phenomena.cpp: In function 'int main()':
foehn_phenomena.cpp:195:11: warning: unused variable 'start' [-Wunused-variable]
  195 |   clock_t start = clock();
      |           ^~~~~
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