Compilare: main.cpp: In function 'int main()': main.cpp:190:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<muchii.size(); i++) ~^~~~~~~~~~~~~~ main.cpp:215:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<muchii_e.size(); i++) ~^~~~~~~~~~~~~~~~ main.cpp:187:19: warning: unused variable 'dif' [-Wunused-variable] int nrk=0,dif; ^~~ main.cpp:136:11: warning: unused variable 'j' [-Wunused-variable] int i,j,c,obs; ^ main.cpp:136:13: warning: unused variable 'c' [-Wunused-variable] int i,j,c,obs; ^