oj.uz

Submission #365144

# Submission time Handle Problem Language Result Execution time Memory
365144 2021-02-11T02:52:09 Z mohamedsobhi777 Money (IZhO17_money) C++14
0 / 100
 4 ms 4204 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

#pragma GCC optimize("-Ofast")
//#pragma GCC optimize("trapv")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,sse4.2,popcnt,abm,mmx,avx2,tune=native")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-funroll-loops")

using namespace std;
using namespace __gnu_pbds;

#define vi vector<int>
#define vll vector<ll>
#define vii vector<pair<int, int>>
#define vvi vector<vi>
#define vvii vector<vii>
#define pii pair<int, int>
#define pll pair<ll, ll>
#define loop(_) for (int __ = 0; __ < (_); ++__)
#define forn(i, n) for (int i = 0; i < n; ++i)
#define pb push_back
#define f first
#define s second
#define sz(_) ((int)_.size())
#define all(_) _.begin(), _.end()
#define uni(_) unique(_)
#define lb lower_bound
#define ub upper_bound
#define si set<int>
#define ms multiset<int>
#define qi queue<int>
#define pq prioriry_queue<int>
#define mi map<int, int>
#define inc(i, l, r) for (int i = l; i <= r; i++)
#define dec(i, l, r) for (int i = l; i >= r; i--)

using lll = __int128;
using ll = long long;
using ld = long double;

const int N = 1e6 + 7;
const ll mod = 1e9 + 7;
const ll inf = 2e18;

auto ra = [] {char *p = new char ; delete p ; return ll(p) ; };
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count() * (ra() | 1));
typedef tree<pii, null_type, less<pii>, rb_tree_tag, tree_order_statistics_node_update> os;

int n;
int a[N] ; 

struct fenwick
{
       int bit[N];
       fenwick()
       {
              memset(bit, 0, sizeof bit);
       }
       void add(int x, int v)
       {
              for (; x < N; x += x & -x)
                     bit[x] += v;
       }
       int upto(int x)
       {
              int ret = 0;
              for (; x; x -= x & -x)
                     ret += bit[x];
              return ret;
       }
       inline int get(int l, int r) { return upto(r) - upto(l - 1); }
} sum;

int main()
{
       ios_base::sync_with_stdio(0);
       cin.tie(0);
#ifndef ONLINE_JUDGE
#endif

       cin >> n;
       for (int i = 0; i < n; ++i)
       {
              cin >> a[i];
       }
       int ans = 0;

       for (int i = 0; i < n;)
       {
              int j = i;
              int lst = a[i];
              while (j + 1 < n && a[j + 1] >= lst && sum.get(a[i], lst) == 0)
              {
                     ++j;
                     lst = a[j];
              }
              ans++;
              while (i <= j)
              {
                     sum.add(a[i], 1);
                     ++i;
              }
       }
       cout << ans;
       return 0;
}

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4204 KB Output is correct
2 Incorrect 3 ms 4204 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4204 KB Output is correct
2 Incorrect 3 ms 4204 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4204 KB Output is correct
2 Incorrect 3 ms 4204 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4204 KB Output is correct
2 Incorrect 3 ms 4204 KB Output isn't correct
3 Halted 0 ms 0 KB -