Compilare: main.cpp: In function 'void query1(int, int, int, int, int)': main.cpp:63:14: warning: unused variable 'left_node' [-Wunused-variable] node left_node, right_node; ^~~~~~~~~ main.cpp:63:25: warning: unused variable 'right_node' [-Wunused-variable] node left_node, right_node; ^~~~~~~~~~ main.cpp: In function 'void print_arb()': main.cpp:73:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 1; i < arbint.size(); i++ ){ ~~^~~~~~~~~~~~~~~