Compilare: main.cpp: In function 'void dfs(int, std::vector<std::vector<int> >&, std::vector<int>&, std::vector<int>&)': main.cpp:19:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'std::vector<int> solve(int, std::vector<int>, std::vector<std::vector<int> >, std::vector<int>)': main.cpp:37:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ord.size(); i++) { ~~^~~~~~~~~~~~ main.cpp:39:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dp[node] < perm.size() && v[node] == perm[dp[node]]) main.cpp:41:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0;h < g[node].size(); h++) ~~^~~~~~~~~~~~~~~~ main.cpp:43:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(dp[node] == perm.size()) main.cpp: In function 'int main()': main.cpp:67:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sol.size(); i++) ~~^~~~~~~~~~~~