Compilare: main.cpp: In function 'std::vector<int> BFS(int, int, std::vector<std::vector<std::pair<int, int> > >&)': main.cpp:25:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'll DFS(int, std::vector<std::vector<int> >&, std::vector<long long int>&)': main.cpp:38:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++) ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'll solve(int, std::vector<int>, std::vector<int>, std::vector<int>)': main.cpp:64:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[i].size(); h++) { ~~^~~~~~~~~~~~~ main.cpp:74:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[i].size(); h++) { ~~^~~~~~~~~~~~~ main.cpp:83:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[i].size(); h++) { ~~^~~~~~~~~~~~~