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Cod sursa(job #612202)
#include<fstream>
using namespace std;
int n,a[400010],best[400010],inc[400010];
int summax,incmax,lmax;
void Citire()
{
int i,x,c;
ifstream fin("buline.in");
fin>>n;
for(i=1;i<=n;i++)
{
fin>>x>>c;
if(c==0)
a[i]=a[i+n]=-x;
else
a[i]=a[i+n]=x;
}
fin.close();
}
void Rezolvare()
{
int n1=n+n,i;
best[1]=a[1]; summax=best[1];
inc[1]=1; incmax=1; lmax=1;
for(i=2;i<=n1;i++)
{
if(i-inc[i-1]==n)
{
best[i-1]-=a[inc[i-1]];
inc[i-1]++;
}
if(a[i]<best[i-1]+a[i])
{
best[i]=best[i-1]+a[i];
inc[i]=inc[i-1];
}
else
{
best[i]=a[i];
inc[i]=i;
}
if(summax<best[i])
{
summax=best[i];
lmax=i-inc[i]+1;
incmax=inc[i]; if(incmax>n) incmax-=n;
}
else
if(summax==best[i])
{
if(inc[i]<=n && inc[i]<=incmax)
{
incmax=inc[i];
if(inc[i]==incmax)
{
if(i-inc[i]+1<lmax)
lmax=i-inc[i]+1;
}
else
lmax=i-inc[i]+1;
}
else
if(inc[i]>n && inc[i]-n<=incmax)
{
incmax=inc[i]-n;
if(inc[i]-n==incmax)
{
if(i-inc[i]+1<lmax)
lmax=i-inc[i]+1;
}
else
lmax=i-inc[i]+1;
}
}
}
}
void Afisare()
{
ofstream fout("buline.out");
fout<<summax<<' '<<incmax<<' '<<lmax<<"\n";
fout.close();
}
int main()
{
Citire();
Rezolvare();
Afisare();
return 0;
}