oj.uz

Submission #578422

# Submission time Handle Problem Language Result Execution time Memory
578422 2022-06-16T18:40:27 Z Sam_a17 Global Warming (CEOI18_glo) C++14
100 / 100
 490 ms 17948 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;
 
#pragma GCC optimize("Ofast")
 
#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif
 
#define sz(x) (int((x).size()))
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());
 
#define pb push_back
#define popf pop_front
#define popb pop_back
 
void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}
 
template <class T> void print(set <T> v);
template <class T> void print(vector <T> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T, class V> void print(pair <T, V> p);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(unordered_map<T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
 
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'
 
// for grid problems
long long dx[8] = {-1,0,1,0,1,-1,1,-1};
long long dy[8] = {0,1,0,-1,1,1,-1,-1};
 
// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
  fastIO();
 
  if (str != "" && str != "input") {
    freopen((str + ".in").c_str(), "r", stdin);
    freopen((str + ".out").c_str(), "w", stdout);
  }
 
  if(str == "input") {
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
  }
}
 
// Random
mt19937 myrand(chrono::steady_clock::now().time_since_epoch().count());
 
// Indexed Set
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const long long inf = 1e9;
long long n, x;

struct segTree {
  vector<long long> tree;
  int size = 1;

  void init(int s) {
    while(size < s) {
      size *= 2;
    }
    tree.assign(2 * size - 1, 0);
  }

  void upd(int u, long long value, int x, int lx, int rx) {
    if(rx - lx == 1) {
      tree[x] = max(tree[x], value);
      return;
    }

    int mid = (lx + rx) / 2;
    if(u < mid) {
      upd(u, value, 2 * x + 1, lx, mid);
    } else {
      upd(u, value, 2 * x + 2, mid, rx);
    }

    tree[x] = max(tree[2 * x + 1], tree[2 * x + 2]);
  }

  void upd(int u, long long value) {
    upd(u, value, 0, 0, size);
  }

  long long qry(int l, int r, int x, int lx, int rx) {
    if(lx >= r || rx <= l) {
      return 0;
    }

    if(lx >= l && rx <= r) {
      return tree[x];
    }

    int mid = (lx + rx) / 2;
    long long s1 = qry(l, r, 2 * x + 1, lx, mid);
    long long s2 = qry(l, r, 2 * x + 2, mid, rx);
    return max(s1, s2);
  }

  long long qry(int l, int r) {
    return qry(l, r, 0, 0, size);
  }
};

segTree seg;

void solve_() {
  cin >> n >> x;

  vector<long long> a(n);
  vector<long long> val;

  for(int i = 0; i < n; i++) {
    cin >> a[i];
    val.push_back(a[i]);
    val.push_back(a[i] + x);
  }

  sort(all(val));
  uniq(val);

  seg.init(sz(val));
  vector<long long> dpRight(n, 1), dpLeft(n, 1);

  for(int i = n - 1; i >= 0; i--) {
    int id = lower_bound(all(val), a[i]) - val.begin();
    dpRight[i] = 1 + seg.qry(id + 1, sz(val) + 1);

    seg.upd(id, dpRight[i]);
  }

  seg.init(sz(val));

  long long answ = *max_element(all(dpRight));
  for(int i = 0; i < n; i++) {
    int id = lower_bound(all(val), a[i]) - val.begin();
    dpLeft[i] = 1 + seg.qry(0, id);

    if(i) {
      int idi = lower_bound(all(val), a[i] + x) - val.begin();
      answ = max(answ, dpRight[i] + seg.qry(id, idi));
    }

    seg.upd(id, dpLeft[i]);
  }

  answ = max(answ, *max_element(all(dpLeft)));

  printf("%lld\n", answ);
}
 
int main() {
  setIO();
 
  auto solve = [&](int test_case)-> void {
    while(test_case--) {
      solve_();
    }
  };
 
  int test_cases = 1;
  solve(test_cases);
 
  return 0;
}

Compilation message

glo.cpp: In function 'void setIO(std::string)':
glo.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     freopen((str + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:66:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |     freopen((str + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:70:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
glo.cpp:71:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 244 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 212 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 244 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 392 KB Output is correct
24 Correct 2 ms 328 KB Output is correct
25 Correct 1 ms 324 KB Output is correct
26 Correct 2 ms 340 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 365 ms 12268 KB Output is correct
2 Correct 345 ms 12268 KB Output is correct
3 Correct 356 ms 12268 KB Output is correct
4 Correct 340 ms 12308 KB Output is correct
5 Correct 142 ms 10228 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 78 ms 4332 KB Output is correct
2 Correct 107 ms 4352 KB Output is correct
3 Correct 88 ms 4340 KB Output is correct
4 Correct 37 ms 3280 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 39 ms 3596 KB Output is correct
7 Correct 56 ms 4824 KB Output is correct

Subtask #6
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 170 ms 8348 KB Output is correct
2 Correct 173 ms 8328 KB Output is correct
3 Correct 490 ms 16292 KB Output is correct
4 Correct 186 ms 12156 KB Output is correct
5 Correct 110 ms 8348 KB Output is correct
6 Correct 204 ms 15932 KB Output is correct
7 Correct 185 ms 15984 KB Output is correct
8 Correct 131 ms 8268 KB Output is correct

Subtask #7
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 244 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 324 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 2 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 1 ms 392 KB Output is correct
24 Correct 2 ms 328 KB Output is correct
25 Correct 1 ms 324 KB Output is correct
26 Correct 2 ms 340 KB Output is correct
27 Correct 365 ms 12268 KB Output is correct
28 Correct 345 ms 12268 KB Output is correct
29 Correct 356 ms 12268 KB Output is correct
30 Correct 340 ms 12308 KB Output is correct
31 Correct 142 ms 10228 KB Output is correct
32 Correct 78 ms 4332 KB Output is correct
33 Correct 107 ms 4352 KB Output is correct
34 Correct 88 ms 4340 KB Output is correct
35 Correct 37 ms 3280 KB Output is correct
36 Correct 1 ms 324 KB Output is correct
37 Correct 39 ms 3596 KB Output is correct
38 Correct 56 ms 4824 KB Output is correct
39 Correct 170 ms 8348 KB Output is correct
40 Correct 173 ms 8328 KB Output is correct
41 Correct 490 ms 16292 KB Output is correct
42 Correct 186 ms 12156 KB Output is correct
43 Correct 110 ms 8348 KB Output is correct
44 Correct 204 ms 15932 KB Output is correct
45 Correct 185 ms 15984 KB Output is correct
46 Correct 131 ms 8268 KB Output is correct
47 Correct 165 ms 9316 KB Output is correct
48 Correct 173 ms 9308 KB Output is correct
49 Correct 417 ms 17948 KB Output is correct
50 Correct 155 ms 13484 KB Output is correct
51 Correct 184 ms 11160 KB Output is correct
52 Correct 202 ms 13536 KB Output is correct
53 Correct 191 ms 17624 KB Output is correct
54 Correct 207 ms 17908 KB Output is correct
55 Correct 284 ms 17904 KB Output is correct