Cod sursa(job #2550020)

Utilizator Theo20067Cismaru Theodor-Alexe Theo20067 Data 18 februarie 2020 11:22:19
Problema Buline Scor 100
Compilator cpp-64 Status done
Runda Arhiva de probleme Marime 0.76 kb
#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("buline.in");
ofstream fout("buline.out");
long long n,i,x,b,maxim,S,k, p, u;
long long V[500001], D[500001];
int main()
{
    fin>>n;
    for(i=1; i<=n; i++)
    {
        fin>>x>>b;
        if(b==0)
            x=-x;
        V[i]=V[i-1]+x;
        V[i+n]=x;

    }
    for(i=n+1;i<=2*n;i++)
        V[i]=V[i]+V[i-1];
    p=1;
    D[++u]=0;
    for(i=1;i<=n*2;i++)
    {
        while(p<=u&&V[i]<V[D[u]])
            u--;
        D[++u]=i;
        if (i-D[p]-1==n)
            p++;
        if (V[i]-V[D[p]]>maxim)
        {
            maxim=V[i]-V[D[p]];
            S=D[p];
            k=i-S;
        }
    }
    fout<<maxim<<" "<<S+1<<" "<<k;
    return 0;
}