Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] 1 | #import<bits/stdc++.h> | ^~~~~~ main.cpp:2:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | main(){int a,b;(std::ifstream("cmmdc.in"))>>a>>b;int c=std::__gcd(a,b);c*=(c!=1);(std::ofstream("cmmdc.out"))<<c;} | ^~~~