View Compilation Error

0_0_32305866_16910.cpp: In function 'int main()':
0_0_32305866_16910.cpp:137:26: error: invalid operands of types 'void' and 'int' to binary 'operator%'
         trieNode.build()%3
                          ^
0_0_32305866_16910.cpp:137:26: error: expected '}' at end of input
0_0_32305866_16910.cpp:137:26: error: expected '}' at end of input