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# your code goes here#include "bits/stdc++.h"
using namespace std;
 
int n;
int a[100005];
pair<int,int> p[100005];
int maxi[100005];
 
int main()
{
    scanf("%d",&n);
    for(int  i = 1 ; i <= n ; i++)
    {
        scanf("%d",&a[i]);
        p[i]={a[i],i};
    }
    sort(p+1,p+n+1);
    maxi[n] = p[n].second;
    for(int i = n - 1 ; i >= 1 ; i--)
    {
        maxi[i] = max(maxi[i+1], p[i].second);
    }
    int ans = -1;
    for(int i = 1 ; i < n ; i++)
    {
        if(maxi[i+1]>p[i].second)
            ans=max(ans,maxi[i+1]-p[i].second);
    }
    cout<<ans;
    return 0;
}

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python2.7/py_compile.py", line 117, in compile
    raise py_exc
py_compile.PyCompileError:   File "prog.py", line 2
    using namespace std;
                  ^
SyntaxError: invalid syntax

Standard output is empty