include
using namespace std;
bool ispossible(int arr[],int n,int m,int curr_min)
{
int student_used=1;
int pages_reading=0;
for(int i=0;i<n;i++)
{
if((pages_reading +arr[i])>curr_min)
{
student_used++;
pages_reading=arr[i];
if(student_used>m)
{
return false;
}
}
else{
pages_reading+=arr[i];
}
}
return true;
}
int main() {
int t;
cin>>t;
int n,m;
cin>>n>>m;
int arr[1000];
for(int i=0;i<n;i++)
{
cin>>arr[i];
}
int sum=0;
if(n<m)
{
return -1;
}
for(int i=0;i<n;i++)
{
sum+=arr[i];
}
int s=arr[n-1];
int e=sum;
int ans=INT_MAX;
while(s<=e)
{
int mid=(s+e)/2;
if(ispossible(arr,n,m,mid))
{
ans=min(ans,mid);
e=mid-1;
}
else
{
s=mid+1;
}
}
cout<<ans<<endl;
}
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