Compilare: main.cpp: In function 'void sack(int, int)': main.cpp:28:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==d[nod].size()+1) d[nod].push_back(f[nod]); ~~~^~~~~~~~~~~~~~~~~ main.cpp:35:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==d[it].size()+1) d[it].push_back(f[nod]); ~~~^~~~~~~~~~~~~~~~ main.cpp:54:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<d[it].size();i++) d[nod][i]=min(d[nod][i],d[it][i]); ~^~~~~~~~~~~~~ main.cpp:57:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<inv[it].size();i++) inv[nod][i]=min(inv[nod][i],inv[it][i]); ~^~~~~~~~~~~~~~~ main.cpp:62:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz==inv[nod].size()+1) inv[nod].push_back(-f[nod]); ~~~^~~~~~~~~~~~~~~~~~~ main.cpp:64:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol<inv[nod].size()) sol=inv[nod].size(); ~~~^~~~~~~~~~~~~~~~ main.cpp:65:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(sol<d[nod].size()) sol=d[nod].size(); ~~~^~~~~~~~~~~~~~