Compilare: user.cpp: In function ‘int main()’: user.cpp:49:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<s.size();i++) ^ user.cpp:86:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<sol.size();i++) ^ user.cpp:41:9: warning: unused variable ‘j’ [-Wunused-variable] int j; ^ user.cpp: In function ‘void umple(int, int)’: user.cpp:18:39: warning: array subscript is above array bounds [-Warray-bounds] if (loc[x][y][1]==0&&loc[x][y+1][4]==0) ^