Unusual Graph
Ivan on his birthday was presented with array of non-negative integers $a_1, a_2, \ldots, a_n$. He immediately noted that all $a_i$ satisfy the condition $0 […]
Unusual Graph
Ivan on his birthday was presented with array of non-negative integers $a_1, a_2, \ldots, a_n$. He immediately noted that all $a_i$ satisfy the condition $0 […]