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 <set> | ^~~~~~ main.cpp:5:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 5 | #import <stack> | ^~~~~~ main.cpp:16:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 16 | main() | ^~~~