#include using namespace std; typedef signed long long ll; #undef _P #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) //------------------------------------------------------- int N; int P[303030]; void solve() { int i,j,k,l,r,x,y; string s; cin>>N; int ret=0; FOR(i,N) { cin>>x; int ma=1; for(j=1;j*j<=x;j++) if(x%j==0) { ma=max(ma,P[j]+1); if(j>1) ma=max(ma,P[x/j]+1); } P[x]=max(P[x],ma); ret=max(ret,ma); } cout<