Compilare: main.cpp:2:81: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] 2 | using namespace std;ifstream f("rmq.in");ofstream g("rmq.out");int a[17][1<<17];main(){int n, q;f>>n>>q;for(int i=1;i<=n;i++)f>>a[0][i];for(int j=1;j<17;j++)for(int i=1;i<n;i++)a[j][i]=min(a[j-1][i],a[j-1][i+(1<<(j-1))]);while (q--){int l,r;f>>l>>r;int k=__lg(r-l+1);g<<min(a[k][l],a[k][r-(1<<k)+1])<<'\n';}} | ^~~~