Compilare: main.cpp: In function 'void solve(int, int, int)': main.cpp:26:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz1==r[2*nod].size()) ~~~~^~~~~~~~~~~~~~~~~ main.cpp:32:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(poz2==r[2*nod+1].size()) ~~~~^~~~~~~~~~~~~~~~~~~ main.cpp:40:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=poz1;j<r[2*nod].size();j++) ~^~~~~~~~~~~~~~~~