Submission #342962

#	Time	Username	Problem	Language	Result	Execution time	Memory
342962		David_M	Money (IZhO17_money)	C++14	0 / 100	1 ms	364 KiB

money

#include <bits/stdc++.h> 
using namespace std;
const int N=1000006;
int i,n,s,a[N],l[N],r[N],ans,x;
pair<int, int> p[N];
int main(){
	cin>>n;
	for (i=1; i<=n; i++)cin>>a[i],p[i]={a[i],i};
	sort(p+1, p+n+1);
	for (i=1; i<=n; i++)r[p[i].second]=p[i+1].first,l[p[i].second]=p[i-1].first;
	for (i=n; i>=2; i--)ans+=(l[i]!=a[i-1]),x=l[i],l[i]=a[r[i]],r[i]=a[x];
	cout<<ans;
}

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