# Test case 1 - single node
{a}
{1}
# Test case 2 - standard tree
{a{b{c}{d{e}}}{f{g}{h{i{j}{k}}}}{l{m}}}
{26,5,1,2,1,8,1,5,4,1,1,2,1}
# Test case 3 - a path
{{{{{{{{{{{{{{{{{{{{}}}}}}}}}}}}}}}}}}}}
{20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1}
# Test case 4 - right-branch tree
{{}{{}{{}{{}{{}{}}}}}}
{16,1,13,1,10,1,7,1,4,1,1}
# Test case 5 - left-branch tree
{{{{{{}{}}{}}{}}{}}{}}
{36,25,16,9,4,1,1,1,1,1,1}
