Compilare: main.cpp:2:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 2 | #import <algorithm> | ^~~~~~ main.cpp:3:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 3 | #import <vector> | ^~~~~~ main.cpp:4:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 4 | #import <map> | ^~~~~~ main.cpp:5:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 5 | #import <deque> | ^~~~~~ main.cpp:6:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 6 | #import <cassert> | ^~~~~~ main.cpp:7:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 7 | #import <cmath> | ^~~~~~ main.cpp: In function 'void bt()': main.cpp:16:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 16 | if(rez.size()==k+1) | ~~~~~~~~~~^~~~~ main.cpp: At global scope: main.cpp:34:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 34 | main() | ^~~~