Submission #1257524

#	Time	Username	Problem	Language	Result	Execution time	Memory
1257524		medaa	Money (IZhO17_money)	C++20	9 / 100	0 ms	328 KiB

money

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl '\n'

const int N = 1e6;
int a[N];
void SOLVE() {
    int n; cin >> n;
    for(int i = 0; i < n; i++) cin >> a[i];
    int counter = 0;
    multiset<pair<int, int>> ms;
    ms.insert({0, 1e7});

    for(int i = 0; i < n;){
        int mn = a[i], j = i;
        auto it = ms.lower_bound({mn, 1e7});
        it--;
        pair<int, int> c = *it;
        while(j + 1 < n && a[j + 1] >= a[j] && a[j + 1] <= c.second){
            j++;
        }
        ms.erase(ms.find(c));
        ms.insert({c.first, a[i]});
        for(int k = i; k < j; k++){
            ms.insert({a[k], a[k + 1]});
        }
        ms.insert({a[j], c.second});
        counter++;
        i = j + 1;
    }
    cout << counter << endl;
}
signed main(){
    ios_base::sync_with_stdio(false); cout.tie(nullptr); cin.tie(nullptr);
    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    int o_o = 1; //cin >> o_o;
    while(o_o --) SOLVE();
    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55