Compilare: main.cpp: In function 'void stronglyConnected(int)': main.cpp:34:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<arcs[current_node].size(); ++i) ~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void stronglyConnectedBackArcs(int)': main.cpp:44:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<back_arcs[current_node].size(); ++i) ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void computeComponents()': main.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<stronglyConnectedOrder.size(); ++j) ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void calculateComponentsDegs()': main.cpp:81:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<arcs[i].size(); ++j) ~^~~~~~~~~~~~~~~ main.cpp: In function 'void componentsBFS()': main.cpp:92:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<allComponents.size(); ++i) ~^~~~~~~~~~~~~~~~~~~~~ main.cpp:99:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<allComponents[current_component].size(); ++i) { ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:106:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0; j<arcs[current_variable].size(); ++j) { ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~