Compilare: main.cpp:1:2: warning: #import is a deprecated GCC extension [-Wdeprecated] #import<bits/stdc++.h> ^~~~~~ main.cpp:2:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main(){int n,v[]={1,2,3,4,5,6,7,8};std::ifstream("permutari.in")>>n;std::ofstream g("permutari.out");do for(int i=0;i<n;++i) g<<v[i]<<' ';while(g<<'\n',std::next_permutation(v,v+n));} ^