Compilare: main.cpp: In member function 'bool Query::operator<(Query) const': main.cpp:20:16: warning: statement has no effect [-Wunused-value] 20 | block_l<a2.block_l; | ~~~~~~~^~~~~~~~~~~ main.cpp:21:5: warning: control reaches end of non-void function [-Wreturn-type] 21 | } | ^ main.cpp: In function 'void solve()': main.cpp:64:17: warning: 'r_block' may be used uninitialized [-Wmaybe-uninitialized] 64 | for(int j=r_block+1;j<=query[i].r;j++) { | ^ main.cpp:54:22: note: 'r_block' was declared here 54 | int last_block=0,r_block,mx=0,temp; | ^~~~~~~