Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:14:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<L[nod].size();i++) ^ user.cpp: In function ‘void linie(int)’: user.cpp:32:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i][j]<=a[1][1] && a[i][l]<a[1][1]) ^ user.cpp: In function ‘void coloana()’: user.cpp:44:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[l][j]<=a[1][1] && a[i][j]<=a[1][1]) ^