#define ATCODER #define _USE_MATH_DEFINES #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; using ll = long long; using ld = long double; using pll = pair; using pdd = pair; //template using pq = priority_queue, greater>; #define FOR(i, a, b) for(ll i=(a); i<(b);i++) #define REP(i, n) for(ll i=0; i<(n);i++) #define ROF(i, a, b) for(ll i=(b-1); i>=(a);i--) #define PER(i, n) for(ll i=n-1; i>=0;i--) #define REPREP(i,j,a,b) for(ll i=0;i > #define VV2(type,n,m,val) vector< vector > val;val.resize(n);for(ll i;i #define VEC(type,n,val) vector val;val.resize(n) #define VL vector #define VVL vector< vector > #define VP vector< pair > #define SZ size() #define all(i) begin(i),end(i) #define SORT(i) sort(all(i)) #define BITI(i) (1<>i) & 1) != 0) #define ALLBIT(n) (ll(1)<v?v:n #define MP(a,b) make_pair(a,b) #define DET2(x1,y1,x2,y2) (x1)*(y2)-(x2)*(y1) #define DET3(x1,y1,z1,x2,y2,z2,x3,y3,z3) (x1)*(y2)*(z3)+(x2)*(y3)*(z1)+(x3)*(y1)*(z2)-(z1)*(y2)*(x3)-(z2)*(y3)*(x1)-(z3)*(y1)*(x2) #define INC(a) for(auto& v:a)v++; #define DEC(a) for(auto& v:a)v--; #define SQU(x) (x)*(x) #define L0 ll(0) #ifdef ATCODER #include using namespace atcoder; //using mint = modint1000000007; using mint2 = modint998244353; #endif template vector read(size_t n) { vector ts(n); for (size_t i = 0; i < n; i++) cin >> ts[i]; return ts; } template void read_tuple_impl(TV&) {} template void read_tuple_impl(TV& ts) { get(ts).emplace_back(*(istream_iterator(cin))); read_tuple_impl(ts); } template decltype(auto) read_tuple(size_t n) { tuple...> ts; for (size_t i = 0; i < n; i++) read_tuple_impl(ts); return ts; } using val = ll; using func = ll; val op(val a, val b) { return a + b; } val e() { return 0; } val mp(func f, val a) { return a + f; } func comp(func f, func g) { return f + g; } func id() { return 0; } ll g; bool f(val a) { return a < g; } ll di[4] = { 1,0,-1,0 }; ll dj[4] = { 0,1,0,-1 }; ll si[4] = { 0,3,3,0 }; ll sj[4] = { 0,0,3,3 }; //ll di[4] = { -1,-1,1,1 }; //ll dj[4] = { -1,1,-1,1 }; //ll di8[8] = { 0,-1,-1,-1,0,1,1,1 }; //ll dj8[8] = { -1,-1,0,1,1,1,0,-1 }; void solve() { ll n, m; cin >> n >> m; VL a = read(m); VL b = read(m); DEC(a); DEC(b); bool isOk = true; set ans0; // 使われる機会があるか set ans1; // 逆転の可能性があるか REP(i, m) { ans0.insert(i); } VL p(n); REP(i, n) p[i] = i; do { VL pp = p; REP(i, m) { if (pp[a[i]] > pp[b[i]]) { swap(pp[a[i]], pp[b[i]]); ans0.erase(i); } } REP(i, n - 1) { if (pp[i] > pp[i + 1]) { isOk = false; ans1.insert(i); } } } while (next_permutation(all(p))); if (isOk) { cout << "Yes\n" << ans0.size() << "\n"; for (auto& v : ans0) { cout << v + 1 << " "; } } else { cout << "No\n" << ans1.size() << "\n"; for (auto& v : ans1) { cout << v + 1 << " "; } } cout << "\n"; return; } int main() { ll t = 1; cin >> t; while (t--) { solve(); } return 0; }