Compilare: main.cpp: In function 'int main()': main.cpp:18:6: warning: unused variable 'a' [-Wunused-variable] int a; ^ main.cpp: In function 'std::vector<long long int> dfs(int, int)': main.cpp:36:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[nod].size(); i++) { ~~^~~~~~~~~~~~~~~ main.cpp:45:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(levelsSum[i].size() > maxSize) { ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~ main.cpp:54:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < levelsSum.size(); i++) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:55:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (j-1 < levelsSum[i].size()) { ~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:63:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < sums.size(); j++) { ~~^~~~~~~~~~~~~