Submission #962175

#	Time	Username	Problem	Language	Result	Execution time	Memory
962175		Cookie	Money (IZhO17_money)	C++14	100 / 100	963 ms	58060 KiB

money

#include<bits/stdc++.h>
#include<fstream>
using namespace std;
#define sz(a) (int)a.size()
#define ALL(v) v.begin(), v.end()
#define ALLR(v) v.rbegin(), v.rend()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
#define mpp make_pair
const ld PI = 3.14159265359, prec = 1e-9;;
//using u128 = __uint128_t;
//const int x[4] = {1, 0, -1, 0};
//const int y[4] = {0, -1, 0, 1};
const ll mod = 1e9 + 7, pr = 31;
const int mxn = 1e6 + 5, mxq = 1e5 + 5, sq = 450, mxv = 5e4 + 1;
//const int base = (1 <<18);
const ll inf = 1e9 + 5, neg = -69420, inf2 = 1e14;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
// have fun!
// <3;
int n;
int a[mxn + 1];
void solve(){
    cin >> n;
    for(int i = 1; i <= n; i++)cin >> a[i];
    set<int>s;
    int ans = 0;
    for(int i = 1; i <= n; ){
        auto it = s.upper_bound(a[i]);
        int lim;
        if(it == s.end())lim = inf;
        else lim = *it;
        int r = i + 1;
        while(r <= n && a[r] >= a[r - 1] && a[r] <= lim)r++;
        ans++;
        for(int j = i; j < r; j++)s.insert(a[j]);
        i = r;
    }
    cout << ans;
}
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen("netw.inp", "r", stdin);
    //freopen("netw.out", "w", stdout)
    int tt; tt = 1;
    while(tt--){
        solve();
 
    }
    return(0);
}

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