#include #include using namespace std; using namespace atcoder; typedef long long int ll; typedef long double ld; typedef vector vi; typedef vector vvi; typedef vector vvvi; typedef vector vvvvi; typedef pair pi; typedef pair ppi; typedef pair pppi; typedef pair ppppi; #define FOR(i,l,r) for(ll i=l;i=l;i--) #define RREP(i,n) RFOR(i,0,n) #define ALL(x) x.begin(),x.end() #define F first #define S second #define BS(A,x) binary_search(ALL(A),x) #define LB(A,x) (ll)(lower_bound(ALL(A),x)-A.begin()) #define UB(A,x) (ll)(upper_bound(ALL(A),x)-A.begin()) #define COU(A,x) (UB(A,x)-LB(A,x)) #define sz(c) ((ll)(c).size()) templateusing min_priority_queue=priority_queue,greater>; templateostream&operator<<(ostream&os,pair&p){os<istream&operator>>(istream&is,pair&p){is>>p.F>>p.S;return is;} templateostream&operator<<(ostream&os,vector&v){REP(i,sz(v))os<istream&operator>>(istream&is,vector&v){for(T&in:v)is>>in;return is;} templatebool chmax(T&a,T b){if(abool chmin(T&a,T b){if(b vm; typedef vector vvm; typedef vector vvvm; typedef vector vvvvm; ostream&operator<<(ostream&os,mint&a){os<>_; while(_--){ ll N;cin>>N; string S;cin>>S; S+=S[0];S+=S[1]; bool ans=0; REP(x,4)if(same(S[0],x%2+'0')&&same(S[1],x/2+'0')){ vector>DP(N+1,vector(4)); DP[0][x]=1; REP(i,N)REP(j,4)if(same(S[i+1],j%2+'0')&&same(S[i+2],j/2+'0')){ ll k=j%2*2; if(DP[i][k])if(k/2!=0||j%2!=j/2)DP[i+1][j]=1; if(DP[i][k+1])if(k/2!=1||j%2!=j/2)DP[i+1][j]=1; } if(DP[N][x])ans=1; } cout<<(ans?"Yes":"No")<