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#include <fstream>
#include <iostream>
using namespace std;
ifstream fin("transport.in");
ofstream fout("transport.out");
int n,k,maxim,st,dr,rasp,v[16003],suma;
bool ok(int candidat) {
int sum=0,nr=1;
for(int i=0; i<n; i++) {
if(sum+v[i]>candidat) {
nr++;
sum=v[i];
} else {
sum+=v[i];
}
if(nr>k) return false;
}
return true;
}
void cautbin() {
dr=suma;
st=maxim;
while(st<=dr) {
int mij=(st+dr)/2;
cout<<st<<" "<<mij<<" "<<dr<<"\n";
if(ok(mij)) {
dr=mij-1;
rasp=mij;
} else st=mij+1;
}
}
int main() {
fin>>n>>k;
for(int i=0; i<n; i++) {
fin>>v[i];
maxim=max(maxim,v[i]);
suma+=v[i];
}
cautbin();
fout<<rasp;
return 0;
}