Compilare: main.cpp:4:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 4 | #import <algorithm> | ^~~~~~ main.cpp:5:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 5 | #import <vector> | ^~~~~~ main.cpp:6:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 6 | #import <map> | ^~~~~~ main.cpp:7:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 7 | #import <set> | ^~~~~~ main.cpp:8:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 8 | #import <deque> | ^~~~~~ main.cpp:9:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 9 | #import <queue> | ^~~~~~ main.cpp:10:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 10 | #import <cassert> | ^~~~~~ main.cpp:11:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 11 | #import <cmath> | ^~~~~~ main.cpp:12:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 12 | #import <cstring> | ^~~~~~ main.cpp:13:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 13 | #import <cctype> | ^~~~~~ main.cpp:14:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 14 | #import <cstdlib> | ^~~~~~ main.cpp:15:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 15 | #import <stack> | ^~~~~~ main.cpp: In function 'std::ostream& operator<<(std::ostream&, mod_int)': main.cpp:33:5: warning: no return statement in function returning non-void [-Wreturn-type] 33 | } | ^ main.cpp: In function 'std::istream& operator>>(std::istream&, mod_int&)': main.cpp:37:5: warning: no return statement in function returning non-void [-Wreturn-type] 37 | } | ^ main.cpp: At global scope: main.cpp:55:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 55 | main() | ^~~~