Cod sursa(job #961772)

Utilizator misinoonisim necula misino Data 12 iunie 2013 20:39:02
Problema Cuburi2 Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.28 kb
#include<fstream>
#include<cstdio>
#define N  251000
#define D 1000000
using namespace std;
long long i,n,poz=D+1,m,x,y,p,a[N],dr[N],st[N],d[N],s[N];
char buf[D+10];
inline int bsearch(int li,int ls)
{
    int mij,sol=li;
    while(li<=ls)
    {
        mij=(li+ls)>>1;
        if(st[mij-1]-st[x-1]<st[y]-st[mij-1])
        {
            li=mij+1;
            sol=mij;
        }
        else
        ls=mij-1;
    }
    return sol;
}
inline unsigned int ianr()
{
    unsigned int nr=0;
    while(buf[poz]<'0'||buf[poz]>'9')
    if(++poz>=D)
    fread(buf,D,1,stdin),poz=0;
    while('0'<=buf[poz]&&buf[poz]<='9')
    {
        nr=nr*10+buf[poz]-'0';
        if(++poz>=D)
        fread(buf,D,1,stdin),poz=0;
    }
    return nr;
}

int main()
{
    freopen("cuburi2.in","r",stdin);
    freopen("cuburi2.out","w",stdout);
    n=ianr();
    m=ianr();
    for(i=1;i<=n;++i)
    {
        a[i]=ianr();
        st[i]=st[i-1]+a[i];
        s[i]=s[i-1]+st[i-1];
    }
    for(i=n;i;--i)
    {
        dr[i]=dr[i+1]+a[i];
        d[i]=d[i+1]+dr[i+1];
    }
    for(i=1;i<=m;++i)
    {
        x=ianr();
        y=ianr();
        p=bsearch(x,y);
        printf("%lld %lld\n",p,s[p]-s[x-1]-st[x-1]*(p-x+1)+d[p]-d[y+1]-dr[y+1]*(y-p+1));
    }
    return 0;
}