Compilare: main.cpp: In function 'bool exista_dreptunghi(int)': main.cpp:107:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.size();i++) ~^~~~~~~~~ main.cpp:109:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<b.size();j++) ~^~~~~~~~~ main.cpp:119:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.size() && !gasit;i++) ~^~~~~~~~~ main.cpp:126:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a.size();i++) ~^~~~~~~~~ main.cpp:130:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<b.size();i++) ~^~~~~~~~~