Submission #2535935

Source Code Expand

#include<iostream>
#include<cstdio>
#include<cmath>
#include<cstring>
#include<algorithm>
#define ll long long
using namespace std;
int read()
{
	char ch=getchar();int f=0,x=1;
	while(ch<'0'||ch>'9'){if(ch=='-') x=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){f=(f<<1)+(f<<3)+ch-'0';ch=getchar();}
	return f*x;
}
int a[200005],n,b[200005];
int main()
{
	n=read();
	for(int i=1;i<=n;i++) a[i]=read(),b[a[i]]=i;
	int now=0,ans=0;
	for(int i=1;i<=n;i++)
	{
		if(b[i]>b[i-1])
		{
			now++;
		}
		else now=1;
		ans=max(ans,now);
	}
	cout<<n-ans;
}

Submission Info

Submission Time
Task B - Backfront
User mengbierr
Language C++14 (GCC 5.4.1)
Score 500
Code Size 571 Byte
Status AC
Exec Time 13 ms
Memory 1792 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 28
Set Name Test Cases
Sample s1.txt, s2.txt, s3.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, s1.txt, s2.txt, s3.txt
Case Name Status Exec Time Memory
01.txt AC 13 ms 1792 KiB
02.txt AC 13 ms 1792 KiB
03.txt AC 13 ms 1792 KiB
04.txt AC 13 ms 1792 KiB
05.txt AC 13 ms 1792 KiB
06.txt AC 13 ms 1792 KiB
07.txt AC 12 ms 1792 KiB
08.txt AC 12 ms 1792 KiB
09.txt AC 12 ms 1792 KiB
10.txt AC 12 ms 1792 KiB
11.txt AC 13 ms 1792 KiB
12.txt AC 13 ms 1792 KiB
13.txt AC 13 ms 1792 KiB
14.txt AC 13 ms 1792 KiB
15.txt AC 13 ms 1792 KiB
16.txt AC 13 ms 1792 KiB
17.txt AC 13 ms 1792 KiB
18.txt AC 13 ms 1792 KiB
19.txt AC 12 ms 1792 KiB
20.txt AC 12 ms 1792 KiB
21.txt AC 13 ms 1792 KiB
22.txt AC 12 ms 1792 KiB
23.txt AC 1 ms 256 KiB
24.txt AC 1 ms 256 KiB
25.txt AC 1 ms 256 KiB
s1.txt AC 1 ms 256 KiB
s2.txt AC 1 ms 256 KiB
s3.txt AC 1 ms 256 KiB