Compilare: main.cpp: In function 'void sack(int)': main.cpp:25:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<d[it].size();i++){ ~^~~~~~~~~~~~~ main.cpp:26:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d[nod].size()<i+1) d[nod].push_back(d[it][i]); ~~~~~~~~~~~~~^~~~ main.cpp:34:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(d[nod].size()<l-urm[nod]) ~~~~~~~~~~~~~^~~~~~~~~~~ main.cpp:42:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] else if(d[nod].size()<l-val[nod]) ~~~~~~~~~~~~~^~~~~~~~~~~ main.cpp:46:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(l-val[nod]+1>d[nod].size()) d[nod].push_back(d[nod][l-val[nod]-1]); ~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp:51:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d[nod].size()==l) ~~~~~~~~~~~~~^~~