Cod sursa(job #1666277)

Utilizator narcios_neculaNarcis Necula narcios_necula Data 27 martie 2016 20:49:50
Problema Cuburi2 Scor 36
Compilator cpp Status done
Runda Arhiva de probleme Marime 1 kb
#include <fstream>
using namespace std;
ifstream f("cuburi2.in");
ofstream g("cuburi2.out");
int n,m,i,sol,p,u,mij,sum,x,y;
long long st[250003],dr[250003],v[250003];
int main()
{
    f >> n >> m;
    f >> v[1];
    st[1] = v[1];
    for(i = 2; i <= n; ++i)
    {
        f >> v[i];
        v[i] += v[i - 1];
        st[i] = v[i] + st[i - 1];
    }
    for(i = n; i >= 1; --i)
        dr[i] = v[n] - v[i - 1] + dr[i + 1];
    for(i = 1; i <= m; ++i)
    {
        f >> x >> y;
        p = x;
        u = y;
        while(p <= u)
        {
            mij = (p + u) / 2;
            if(v[mij] - v[x - 1] > v[y] - v[mij])
            {
                sol = mij;
                u = mij - 1;
            }
            else
                p = mij + 1;
        }
        g << sol << " ";
        sum = st[sol - 1] - st[x - 1] - (v[x - 1] * (sol - x));
        sum += dr[sol + 1] - dr[y + 1] - (v[n] - v[y]) * (y - sol);
        g << sum << '\n';
    }
    return 0;
}