Compilare: main.cpp: In function 'void adauga(int)': main.cpp:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < h[p].size(); i++){ ~~^~~~~~~~~~~~~ main.cpp: In function 'int calc(int)': main.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < h[p].size(); i++){ ~~^~~~~~~~~~~~~ main.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type] } ^