Compilare: user.cpp: In function ‘void Dfs(int)’: user.cpp:59:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol.size(); ++ i) ^ user.cpp:62:45: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Sol.size(); ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:93:13: warning: suggest parentheses around ‘+’ inside ‘>>’ [-Wparentheses] in >> b + 1; ^ user.cpp:121:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Ans.size(); ++ i) ^