Compilare: main.cpp: In function 'int Distance(int)': main.cpp:50:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:128:10: warning: operation on 'i' may be undefined [-Wsequence-point] i=i>>=1; ~^~~~~~ main.cpp:82:25: warning: unused variable 'st' [-Wunused-variable] int i,x,y,t,c,rez,l,st,dr,mij; ^~ main.cpp:82:28: warning: unused variable 'dr' [-Wunused-variable] int i,x,y,t,c,rez,l,st,dr,mij; ^~ main.cpp:82:31: warning: unused variable 'mij' [-Wunused-variable] int i,x,y,t,c,rez,l,st,dr,mij; ^~~