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Cod sursa(job #423758)
#include<stdio.h>
int n,k,a[10000],nr,nr2=0;
bool ok(int x)
{
nr=0;
for(int i=1;i<=n;i++)
if(nr+a[i]>x)
{
nr=a[i];
nr2++;
}
else
nr+=a[i];
if(nr2>k)
return false;
return true;
}
int bs()
{
int i,pas=1<<19;
for(i=0;pas;pas>>=1)
if(ok(i+pas))
i+=pas;
return i;
}
int main()
{
freopen("transport.in","r",stdin);
freopen("transport.out","w",stdout);
scanf("%d%d",&n,&k);
for(int i=1;i<=n;i++)
scanf("%d",&a[i]);
printf("%d",bs());
return 0;
}