Compilare: user.cpp:38:18: warning: overflow in implicit constant conversion [-Woverflow] const int LINF = 0x3f3f3f3f3f3f3f3f; ^~~~~~~~~~~~~~~~~~ user.cpp:66:6: warning: ISO C++ forbids declaration of ‘main’ with no type [-Wreturn-type] main() ^ user.cpp: In function ‘int main()’: user.cpp:140:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ind.size() - 1; i++) ~~^~~~~~~~~~~~~~~~