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Cod sursa(job #657661)
#include <cstdio>
#include <algorithm>
typedef long long i64;
using namespace std;
i64 n,m,poz,x,y;
i64 v[250001],nl[250001],nr[250001],cl[250001],cr[250001];
inline void bs(int left,int right)
{
int mid;
if (left>right)
return;
mid=(left+right)/2;
if (nl[mid-1]-nl[x-1]<nl[y]-nl[mid-1])
{
poz=mid;
bs(mid+1,right);
}
else
bs(left,mid-1);
}
int main()
{
i64 i,ml,mr;
freopen("cuburi2.in","r",stdin);
freopen("cuburi2.out","w",stdout);
scanf("%I64d %I64d",&n,&m);
for (i=1;i<=n;++i)
{
scanf("%I64d",&v[i]);
nl[i]=nl[i-1]+v[i];
cl[i]=cl[i-1]+nl[i-1];
}
for (i=n;i;--i)
{
nr[i]=nr[i+1]+v[i];
cr[i]=cr[i+1]+nr[i+1];
}
for (;m;--m)
{
scanf("%I64d %I64d",&x,&y);
if (x>y)
swap(x,y);
bs(x,y);
ml=cl[poz]-(poz-x)*nl[x-1]-cl[x];
mr=cr[poz]-(y-poz)*nr[y+1]-cr[y];
printf("%I64d %I64d\n",poz,ml+mr);
}
return 0;
}