Cod sursa(job #767753)

Utilizator SteveStefan Eniceicu Steve Data 14 iulie 2012 18:24:01
Problema Buline Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.19 kb
#include <fstream>
#include <queue>

using namespace std;

int N, S = -20000, poz, poz2;
int v[400005];
deque <pair <int, int> > dq;

void Citire () {
    int a;
    ifstream fin ("buline.in");
    fin >> N;
    for (int i = 0; i < N; i++)
    {
        fin >> v[i] >> a;
        v[i] = (a ? v[i] : -v[i]);
        v[i + N] = v[i];
        if (S < v[i])
        {
            S = v[i];
            poz = i;
            poz2 = i;
        }
    }
    for (int i = 1; i < N << 1; i++)
        v[i] += v[i - 1];
    fin.close ();
}

void Business () {
    for (int i = 0; i < N + N; i++)
    {
        if (!dq.empty () && i - dq.front ().second > N) dq.pop_front ();
        while (!dq.empty () && dq.back ().first > v[i]) dq.pop_back ();
        dq.push_back (make_pair (v[i], i));
        if (v[i] - dq.front ().first > S)
        {
            S = v[i] - dq.front ().first;
            poz = dq.front ().second;
            poz2 = i;
        }
    }
}

void Scriere () {
    ofstream fout ("buline.out");
    fout << S << " " << poz + 2 << " " << poz2 - poz;
    fout.close ();
}

int main () {
    Citire ();
    Business ();
    Scriere ();
    return 0;
}