Cod sursa(job #1768438)

Utilizator moise_alexandruMoise Alexandru moise_alexandru Data 30 septembrie 2016 21:09:33
Problema Subsecventa de suma maxima Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.04 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("ssm.in");
ofstream out("ssm.out");
const int inf = (1 << 30);
const int maxn = 6000005;
int maxime[maxn];
int pozmax[maxn];
int sp[maxn];
int main()
{
    int n;
    in >> n;
    for(int i = 1; i <= n; i++)
    {
        int x;
        in >> x;
        sp[i] = sp[i - 1] + x;
    }
    maxime[n + 1] = -inf;
    for(int i = n; i >= 1; i--)
    {
        /*
        if(maxime[i + 1] < sp[i])
            pozmax[i] = i;
        else
            pozmax[i] = pozmax[i + 1];
        */
        maxime[i] = max(maxime[i + 1], sp[i]);
    }
    int mx = -inf;
    int st = -1;
    int dr = 0;
    int pozst = 1;
    int minim = 0;
    for(int i = 1; i <= n; i++)
    {
        if(mx < sp[i] - minim)
        {
            st = pozst + 1;
            dr = i;
        }
        mx = max(mx, sp[i] - minim);
        if(minim > sp[i])
            pozst = i;
        minim = min(minim, sp[i]);
    }
    out << mx << " " << st << " " << dr;
    return 0;
}