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Cod sursa(job #797952)
#include <fstream>
#include <algorithm>
using namespace std;
ifstream f("buline.in");
ofstream g("buline.out");
int n, s, se, v[400010], c, x, maxim, l, p, i, m, lm, pm, a[400010];
int main(){
f>>n;
for(i=1; i<=n; i++)
{
f>>x>>c;
if(c==0)
{
v[i]-=x;
se-=x;
}
else
{
v[i]=x;
se+=x;
}
}
for(i=1; i<n; i++)
v[i+n]=v[i];
m=n+n-1;
maxim=v[1];
p=1;
pm=1;
l=1;
lm=1;
s=v[1];
if(s<0)
s=0;
/*for(i=2; i<=m; i++)
{
if(s==0)
{
s=v[i];
if(s>maxim)
{
maxim=s;
l=1;
p=i;
}
}
else
{
s+=v[i];
l++;
if(s>maxim)
{
maxim=s;
lm=l;
pm=p;
}
}
if(s<0)
{
l=1;
s=0;
p=i+1;
}
}*/
for(i=2; i<=m; i++)
{
a[i]=max(v[i], a[i-1]+v[i]);
if(a[i]>a[i-1])
l++;
if(a[i]>maxim)
{
maxim=a[i];
lm=l;
pm=p;
}
if(a[i]<0)
{
l=1;
p=i+1;
}
}
g<<maxim<<' '<<pm<<' '<<lm<<"\n";
g.close();
return 0;
}