Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:29:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[x].size(); ++i) ^ user.cpp: In function ‘int main()’: user.cpp:94:27: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] fin >> x >> y >> s+1; ^