Compilare: main.cpp: In function 'int main()': main.cpp:18:6: warning: unused variable 'a' [-Wunused-variable] int a; ^ main.cpp:27:9: warning: unused variable 'lo' [-Wunused-variable] double lo = 0, hi = 2e12; ^~ main.cpp:27:17: warning: unused variable 'hi' [-Wunused-variable] double lo = 0, hi = 2e12; ^~ main.cpp: In function 'std::vector<long long int> dfs(int, int)': main.cpp:37:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) { ~~^~~~~~~~~~~~~~~ main.cpp:46:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(levelsSum[i].size() > maxSize) { ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:55:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < levelsSum.size(); i++) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:56:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j-1 < levelsSum[i].size()) { ~~~~^~~~~~~~~~~~~~~~~~~~~