Compilare: user.cpp: In function ‘void printAns()’: user.cpp:82:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < E.size() - 1; ++ i) ^ user.cpp:90:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = pos + 1; i < E.size() - 1; ++ i) ^ user.cpp:107:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Ans.size() - 1; ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:115:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^