Given a sum of $l$ integers $r_1+...+r_k+...+r_l$ and an integer $t$.
Find indices
$1 < p_1 <...< p_h <...< p_{t-1} < l$
such that in sum
$(r_1+...+r_{p_1})+...+(r_{p_{h-1}+1}+...+r_{p_h})+...+(r_{p_{t-1}}+...+r_l)$
sums in brackets have nearly same value.
The criteria "nearly same value" can be defined by some norm over the vector of sums $(R_1,...,R_h,...,R_t)$, where $R_h=(r_{p_{h-1}+1}+...+r_{p_h})$.
Do you know something about this problem? Any similar problems? Any suitable references on such problems? To what problems this can be reduced?
