Cod sursa(job #899700)

Utilizator MagnvsDaniel Constantin Anghel Magnvs Data 28 februarie 2013 15:51:41
Problema Cuburi2 Scor 90
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.02 kb
#include <cstdio>
#include <algorithm>
 
typedef long long ll;
 
using namespace std;
 
ll n,m,poz,x,y;
ll 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()
{
    ll i,ml,mr;
 
    freopen("cuburi2.in","r",stdin);
    freopen("cuburi2.out","w",stdout);
 
    scanf("%lld %lld",&n,&m);
 
    for (i=1;i<=n;++i)
    {
        scanf("%lld",&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("%lld %lld",&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("%lld %lld\n",poz,ml+mr);
    }
 
    return 0;
}