0_0_30015006_30180.cpp: In function 'int main()': 0_0_30015006_30180.cpp:75:12: error: invalid operands of types 'Node* [2]' and 'int' to binary 'operator%' null->ch%5 ^ 0_0_30015006_30180.cpp:75:12: error: expected '}' at end of input