Compilare: main.cpp: In function 'void prt_deques()': main.cpp:40:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<values.size(); i++) ~^~~~~~~~~~~~~~ main.cpp:46:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<sums.size(); i++) ~^~~~~~~~~~~~ main.cpp: In function 'long long int get_min()': main.cpp:61:19: warning: unused variable 'to_return' [-Wunused-variable] long long to_return=values.front(); ^~~~~~~~~ main.cpp:67:19: warning: unused variable 'to_return' [-Wunused-variable] long long to_return=sums.front(); ^~~~~~~~~ main.cpp:74:19: warning: unused variable 'to_return' [-Wunused-variable] long long to_return=values.front(); ^~~~~~~~~ main.cpp:80:19: warning: unused variable 'to_return' [-Wunused-variable] long long to_return=sums.front(); ^~~~~~~~~ main.cpp:56:15: warning: unused variable 'to_return' [-Wunused-variable] long long to_return; ^~~~~~~~~ main.cpp:84:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^