Compilare: user.cpp:9:38: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] int p,n,j,c,m,ln,al,lin,col,gal,MIN=1<<31-1,o,u,cn,z,t,soll,solc,l[201][201],a[201][201],dl[]={-1,0,0,1},dc[]={0,-1,1,0},li,ci,k,x,y,r,b[201][201],i; ^ user.cpp: In function ‘void eulerian()’: user.cpp:26:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<v[nu].size();j++) ^ user.cpp: In function ‘int main()’: user.cpp:80:19: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] a[i][j]=1<<31-1; ^