Submission #88178

#	Time	Username	Problem	Language	Result	Execution time	Memory
88178		turbat	Money (IZhO17_money)	C++14	100 / 100	493 ms	17080 KiB

money

#include<bits/stdc++.h> 
using namespace std;
int n, a[1000005], ans, fen[1000005], b;
void upd(int x){
    while (x <= 1e6){
        fen[x]++;
        x += x & -x;
    }
}
int get(int x){
    int s = 0;
    while (x){
        s += fen[x];
        x -= x & -x;
    }
    return s;
}
int main(){
    cin >> n;
    for(int i = 0;i < n;i++) cin >> a[i];
    for (int i = 0;i < n;i++){
        b = i;
        ans++;
        while (i + 1 < n && a[i] <= a[i + 1] && (get(a[i + 1] - 1) - get(a[b])) <= 0)
            i++;
        for (int j = b;j <= i;j++) upd(a[j]);
    }
    cout << ans;
} 

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