Compilare: user.cpp: In function ‘bool bullshit(int, int, int, int, double)’: user.cpp:29:20: warning: unused variable ‘y2’ [-Wunused-variable] double x2=x+K, y2=y-K; ^ user.cpp: In function ‘bool add(int, int, int, int, double)’: user.cpp:35:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0; i<v[X][Y].size(); ++i) ^ user.cpp: In function ‘bool solutie(double)’: user.cpp:60:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0; j<v[X][Y].size(); ++j) { ^ user.cpp:42:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,x,y,X,Y; ^