#include using namespace std; int main(void){ int t; cin>>t; while(t--){ int n; cin>>n; int flag=1; for(int i=0;i>a[j]; } if(!(a[0]==a[2]&&a[1]==a[3]&&a[1]==a[4]&&a[0]!=a[1]))flag=0; } cout<<(flag?"Yes":"No")<