Compilare: main.cpp: In function 'void solve(long long int)': main.cpp:15:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void build_lant(long long int, long long int)': main.cpp:34:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(long long i=0;i<v[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:140:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod1].size();i++)if(v[nod1][i]==nod2)conflict[j][k]=1,i=v[nod1].size(); ~^~~~~~~~~~~~~~~ main.cpp:162:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<v[nod1].size();k++) ~^~~~~~~~~~~~~~~ main.cpp:165:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(k=0;k<v[nod2].size();k++) ~^~~~~~~~~~~~~~~