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Create Sorting Railway Cars #11

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Create Sorting Railway Cars #11

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19 changes: 19 additions & 0 deletions Sorting Railway Cars
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
int pos[100005];
int ans;
int main()
{
int n;
scanf("%d",&n);
ans=INT_MIN;
for(int i=1;i<=n;i++){
int x;
scanf("%d",&x);
pos[x]=pos[x-1]+1;
ans=max(ans,pos[x]);
}
// ans is length of longest segment
cout<<n-ans<<endl;
return 0;