Compilare: main.cpp: In function 'int main()': main.cpp:103:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=1;i<L[lg].size();i++){ ~^~~~~~~~~~~~~ main.cpp:110:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<L[lg].size()-1;i++){ ~^~~~~~~~~~~~~~~ main.cpp:115:66: warning: narrowing conversion of 'val' from 'int' to 'long long unsigned int' inside { } [-Wnarrowing] L[lg+1].push_back({x,y,lng,get_max2(val),val}); ^