oj.uz

답안 #950534

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
950534 2024-03-20T11:48:12 Z xynex 3단 점프 (JOI19_jumps) C++17
19 / 100
 215 ms 71248 KB 
/**
  * Author: Tenjin
  * Created: 27.04.2022 18:58
  * 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 = 998244353;
const ll INF = 1e14;
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*/

const int N = 5e5 + 5;
const int M = 2e6 + 6;

int a[N], n;
int z[N];
struct seg {
  class Node {
    public:
    int mx, last, sum;
    Node() { last = -MOD, sum = -MOD, mx = 0; }
    Node(int num) { last = -MOD, sum = -MOD, mx = num; }
  } t[N << 2];
  void build(int tl = 1, int tr = n, int v = 1) {
    if(tl == tr) t[v] = *new Node(a[tl]);
    else {
      int mid = (tl + tr) >> 1;
      build(tl, mid, v * 2);
      build(mid + 1, tr, v * 2 + 1);
      t[v] = *new Node(max(t[v * 2].mx, t[v * 2 + 1].mx));
    }
  }
  void push(int tl, int tr, int v) {
    if(!z[v]) return;
    if(tl != tr) {
      z[v * 2] = max(z[v * 2], z[v]);
      z[v * 2 + 1] = max(z[v * 2 + 1], z[v]);
    }
//    print("P", tl, tr, z[v], t[v].last, t[v].sum, t[v].mx);
    t[v].last = max(t[v].last, z[v]);
    t[v].sum = max(t[v].sum, t[v].last + t[v].mx);
//    print("N", t[v].sum);
    z[v] = 0;
  }
  void upd(int l, int r, int val, int tl = 1, int tr = n, int v = 1) {
    push(tl, tr, v);
  //  print("T", l, r, val, tl, tr);
    if(tl > r || tr < l) return;
    if(tl >= l && tr <= r) {
      z[v] = max(z[v], val);
      push(tl, tr, v);
      return;
    }
    int mid = (tl + tr) >> 1;
    upd(l, r, val, tl, mid, v * 2), upd(l, r, val, mid + 1, tr, v * 2 + 1);
    t[v].mx = max(t[v * 2].mx, t[v * 2 + 1].mx);
    t[v].sum = max(t[v * 2].sum, t[v * 2 + 1].sum);
  }
  int get(int l, int r, int tl = 1, int tr = n, int v = 1) {
    push(tl, tr, v);
    if(tl > r || tr < l) return 0;
    if(tl >= l && tr <= r) return t[v].sum;
    int mid = (tl + tr) >> 1;
    return max(get(l, r, tl, mid, v * 2), get(l, r, mid + 1, tr, v * 2 + 1));
  }
} tree;
vt<int> chg[N];
int ans[N];
vt<pr<int, int>> qu[N];
void solve() {
   read(n);
   for(int i = 1; i <= n; ++i) {
      read(a[i]);
   }
   tree.build();
   vt<int> st;
   for(int i = 1; i <= n; ++i) {
      while(!st.empty() && a[st.back()] <= a[i]) {
        chg[st.back()].pb(i);
        st.pop_back();
      }
      if(!st.empty()) {
        chg[st.back()].pb(i);
      }
      st.push_back(i);
   }
   int q; read(q);
   for(int i = 1; i <= q; ++i) {
      int l, r; read(l, r);
      qu[l].pb({r, i});
   }
   for(int i = n; i >= 1; --i) {
      while(!chg[i].empty()) {
        int j = chg[i].back();
        chg[i].pop_back();
        int x = j - i + j;
//        print("CH", x, n, i, j, a[i] + a[j]);
        if(x <= n) {
          tree.upd(x, n, a[i] + a[j]);
        }
      }
      for(auto cur : qu[i]) {
//        print("Q", i, cur.ff);
        ans[cur.ss] = tree.get(i, cur.ff);
      }
   }
   for(int i = 1; i <= q; ++i) print(ans[i]);
}

int main() {
  //srand(time(NULL));
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  //freop("");
  int t = 1;
  //read(t);
  for (int i = 1; i <= t; ++i) {
    //write("Case #" + to_string(i) + ": ");
    solve();
  }
  return 0;
}

Compilation message

jumps.cpp: In function 'void freop(std::string)':
jumps.cpp:71:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
jumps.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 + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 51804 KB Output is correct
2 Correct 12 ms 51800 KB Output is correct
3 Correct 13 ms 51804 KB Output is correct
4 Correct 12 ms 51804 KB Output is correct
5 Correct 12 ms 51684 KB Output is correct
6 Correct 12 ms 51804 KB Output is correct
7 Correct 12 ms 51908 KB Output is correct
8 Correct 13 ms 51912 KB Output is correct
9 Correct 13 ms 51920 KB Output is correct
10 Correct 12 ms 51800 KB Output is correct

Subtask #2
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 51804 KB Output is correct
2 Correct 12 ms 51800 KB Output is correct
3 Correct 13 ms 51804 KB Output is correct
4 Correct 12 ms 51804 KB Output is correct
5 Correct 12 ms 51684 KB Output is correct
6 Correct 12 ms 51804 KB Output is correct
7 Correct 12 ms 51908 KB Output is correct
8 Correct 13 ms 51912 KB Output is correct
9 Correct 13 ms 51920 KB Output is correct
10 Correct 12 ms 51800 KB Output is correct
11 Correct 206 ms 64372 KB Output is correct
12 Correct 215 ms 64044 KB Output is correct
13 Correct 212 ms 64256 KB Output is correct
14 Correct 198 ms 64084 KB Output is correct
15 Correct 206 ms 64332 KB Output is correct
16 Correct 211 ms 63420 KB Output is correct
17 Correct 204 ms 63560 KB Output is correct
18 Correct 201 ms 63604 KB Output is correct
19 Correct 201 ms 64080 KB Output is correct

Subtask #3
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 73 ms 71248 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 51804 KB Output is correct
2 Correct 12 ms 51800 KB Output is correct
3 Correct 13 ms 51804 KB Output is correct
4 Correct 12 ms 51804 KB Output is correct
5 Correct 12 ms 51684 KB Output is correct
6 Correct 12 ms 51804 KB Output is correct
7 Correct 12 ms 51908 KB Output is correct
8 Correct 13 ms 51912 KB Output is correct
9 Correct 13 ms 51920 KB Output is correct
10 Correct 12 ms 51800 KB Output is correct
11 Correct 206 ms 64372 KB Output is correct
12 Correct 215 ms 64044 KB Output is correct
13 Correct 212 ms 64256 KB Output is correct
14 Correct 198 ms 64084 KB Output is correct
15 Correct 206 ms 64332 KB Output is correct
16 Correct 211 ms 63420 KB Output is correct
17 Correct 204 ms 63560 KB Output is correct
18 Correct 201 ms 63604 KB Output is correct
19 Correct 201 ms 64080 KB Output is correct
20 Incorrect 73 ms 71248 KB Output isn't correct
21 Halted 0 ms 0 KB -