Compilare: main.cpp:2:2: warning: #import is a deprecated GCC extension [-Wdeprecated] #import<bits/stdc++.h> ^~~~~~ main.cpp:4:39: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] std::ofstream b("permutari.out");main(){int i,n,v[]={1,2,3,4,5,6,7,8};std::ifstream("permutari.in")>>n;do{for(i=0;i<n;)b<<v[i++]<<' ';b<<'\n';}while(std::next_permutation(v,v+n));} ^