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Cod sursa(job #207017)
/*transport*/
#include<fstream.h>
long v[16005],k,v_max,s,d;
int n;
ifstream fin("transport.in");
ofstream fout("transport.out");
void citire()
{
int i;
fin>>n>>k;
for(i=0;i<n;i++)
{
fin>>v[i];
s+=v[i];
if(v[i]>v_max)
v_max=v[i];
}
}
int verifica()
{
int i;
long sv,cont=0;
for(i=0;i<n&& cont<k;)
{
sv=d;
while(sv-v[i]>=0&&i<n)
{
sv-=v[i];
i++;}
cont++;
}
if(i<n)
return 0;
else
return 1;
}
int main()
{
citire();
if(s%k!=0)
d=s/k+1;
else
d=s/k;
if(d<v_max)
d=v_max;
while(verifica()==0)
d+=2;
fout<<d<<'\n';
fout.close();
return 0;
}