Submission #1128260

#	Time	Username	Problem	Language	Result	Execution time	Memory
1128260		_Temirhan	Money (IZhO17_money)	C++20	100 / 100	867 ms	55224 KiB

money

#include <bits/stdc++.h>

using namespace std;
  
#define int long long
#define pb push_back
#define sz(x) x.size()
#define F first
#define S second
#define nl '\n'

void Tima() 
{
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
}  

const int N = 500 * 500 + 1;
const int inf = 1e12;
const int mod = 1e9 + 7;

signed main() 
{
    // Tima();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin >>n;
    int a[n + 1];
    for( int i = 1; i <= n; ++i )
        cin >>a[i];
    int ans = 0;
    multiset< int >s;
    for( int l = 1; l <= n; )
    {
        ++ans;
        int r = l;
        auto j = s.upper_bound( a[l] );
        while( r < n && a[r] <= a[r + 1] && (s.lower_bound(a[r + 1]) == j || s.upper_bound(a[r + 1]) == j) )
            ++r;
        for( int _i = l; _i <= r; ++_i )
            s.insert( a[_i] );
        l = r + 1;
    }
    cout <<ans;
}

Compilation message (stderr)

money.cpp: In function 'void Tima()':
money.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
money.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55