Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:53:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp:60:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = fPos + 1; i < G[node].size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:98:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0, q; j + 1 < indexList[i].size(); j++) { ~~~~~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:98:24: warning: unused variable 'q' [-Wunused-variable] for(int j = 0, q; j + 1 < indexList[i].size(); j++) { ^