Cod sursa(job #1738640)

Utilizator ionanghelinaIonut Anghelina ionanghelina Data 7 august 2016 13:09:22
Problema Buline Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.21 kb
#include<bits/stdc++.h>
#define INF LLONG_MAX
#define maxN 400005
using namespace std;
deque<int> q;
int n,x,c,v[maxN],ls,ld,imin,m[maxN];
long long maxim=-INF,s[maxN];
int main()
{
    freopen("buline.in","r",stdin);
    freopen("buline.out","w",stdout);
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    {
        scanf("%d%d",&x,&c);
        if (c) v[i]=x;
            else v[i]=-x;
    }
    for(int i=n+1;i<=2*n;i++)
    {
        v[i]=v[i-n];
    }

    s[0]=0;
    m[0]=0;
    for(int i=1;i<=(2*n);i++) s[i]=s[i-1]+v[i];
    for(int i=1;i<=n;i++)
    {
        if (s[i]<s[m[i-1]])
        {
            m[i]=i;
        }
            else m[i]=m[i-1];
    }
    for(int i=1;i<=(2*n);i++)
    {
        while (!q.empty() && s[q.back()]>=s[i])
        {
            q.pop_back();
        }
        q.push_back(i);
        while (q.front()<=(i-n)) q.pop_front();
        if (i>n)
        {
            m[i]=q.front();
        }
    }
    for(int i=1;i<=(2*n);i++)
    {
        if ((s[i]-s[m[i-1]])>maxim)
        {
            maxim=s[i]-s[m[i-1]];
            ls=m[i-1]+1;
            ld=i;
        }
    }
   int  y=ld-ls+1;
    printf("%lld %d %d\n",maxim,ls,y);
    return 0;
}