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#include <iostream>
#include <fstream>
using namespace std;
int v[16001];
int transport(int x, int n){
int i, s=0, k=0;
for(i=0;i<n;i++){
if(v[i]+s<=x){
s+=v[i];
}
else{
s=v[i];
k++;
k+=(i==n-1);
}
}
return k;
}
int main()
{
ifstream fin("transport.in");
ofstream fout("transport.out");
int i, n, k, st=0, dr=0, mij, x;
fin>>n>>k;
for(i=0;i<n;i++){
fin>>v[i];
st=max(st,v[i])-1;
dr+=v[i];
}
dr++;
while(st+1<dr){
mij=(st+dr)/2;
x=transport(mij,n);
cout<<x<<' '<<mij<<' '<<st<<' '<<dr<<'\n';
if(x<=k){
dr=mij;
}
else{
st=mij;
}
}
fout<<dr<<'\n';
return 0;
}