Compilare: main.cpp: In function 'int main()': main.cpp:54:27: warning: statement has no effect [-Wunused-value] for ( start[ node ]; start[ node ] < graph[node].size(); start[ node ]++ ){ ~~~~~~~~~~~~^ main.cpp:54:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( start[ node ]; start[ node ] < graph[node].size(); start[ node ]++ ){ ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ main.cpp:30:18: warning: iteration 11 invokes undefined behavior [-Waggressive-loop-optimizations] if ( gr[i] % 2 != 0 ){ ~~~~^ main.cpp:29:24: note: within this loop for ( int i = 0; i <= DIM; i++ ){ ^