This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
int n,s,v[100005];
int main()
{
ios::sync_with_stdio(false);
cin.tie(0);
cin>>n>>s;
for(int i=1;i<=n;i++)
{
cin>>v[i];
}
if(s==1)
{
vector<pair<int,int>> rez;
for(int i=1;i<=n;i++)
{
int poz = i;
while(poz>1 && v[poz]<v[poz-1])
{
rez.push_back({poz,poz-1});
v[poz]^=v[poz-1];
rez.push_back({poz-1,poz});
v[poz-1]^=v[poz];
rez.push_back({poz,poz-1});
v[poz]^=v[poz-1];
--poz;
}
}
cout<<rez.size()<<'\n';
for(auto it : rez)
{
cout<<it.first<<' '<<it.second<<'\n';
}
return 0;
}
else
{
///meci mai cox
}
return 0;
}
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