Submission #501658

#	Time	Username	Problem	Language	Result	Execution time	Memory
501658		shmad	Money (IZhO17_money)	C++17	100 / 100	981 ms	55224 KiB

money

#include <bits/stdc++.h>

#define int long long
#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvi = vt< vt<int> >;

const int N = 1e6 + 5, mod = 1e9 + 7, inf = 1e18 + 7, B = 500, LIM = (1ll << 60);
const double eps = 1e-6;

int n;

void solve () {
	cin >> n;
	vt<int> a(n + 1);
	for (int i = 1; i <= n; i++) cin >> a[i];
	int l = 1, r = 1, ans = 0;
	set<int> v;
	v.insert(N);
	while (r <= n) {
		v.insert(a[r]);
		auto x = v.upper_bound(a[r]);
		l = r;
		while (l + 1 <= n && a[l + 1] >= a[l] && a[l + 1] <= *x) v.insert(a[++l]);
		r = l + 1;
		ans++;			
	}
	cout << ans;
	cout << '\n';
}

bool testcases = 0;
                  
signed main() {
    cin.tie(0) -> sync_with_stdio(0);
    int test = 1;
    if (testcases) cin >> test;
    for (int cs = 1; cs <= test; cs++) {
        solve();
    }
}

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