Compilare: main.cpp: In function 'void update(long long int, long long int, long long int, long long int, long long int)': main.cpp:20:17: warning: operation on 'arb[nod].maxq::stmax' may be undefined [-Wsequence-point] arb[nod].stmax=arb[nod].smax=arb[nod].stmax=arb[nod].drmax=val; ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'long long int query(long long int, long long int, long long int, long long int, long long int)': main.cpp:51:1: warning: control reaches end of non-void function [-Wreturn-type] } ^