#include using namespace std; using LL = long long int; #define incID(i, l, r) for(int i = (l) ; i < (r); ++i) #define decID(i, l, r) for(int i = (r) - 1; i >= (l); --i) #define incII(i, l, r) for(int i = (l) ; i <= (r); ++i) #define decII(i, l, r) for(int i = (r) ; i >= (l); --i) #define inc(i, n) incID(i, 0, n) #define dec(i, n) decID(i, 0, n) #define inc1(i, n) incII(i, 1, n) #define dec1(i, n) decII(i, 1, n) #define inID(v, l, r) ((l) <= (v) && (v) < (r)) #define inII(v, l, r) ((l) <= (v) && (v) <= (r)) #define PB push_back #define EB emplace_back #define MP make_pair #define MT make_tuple #define FI first #define SE second #define FR front() #define BA back() #define ALL(v) v.begin(), v.end() #define RALL(v) v.rbegin(), v.rend() auto setmin = [](auto & a, auto b) { return (b < a ? a = b, true : false); }; auto setmax = [](auto & a, auto b) { return (b > a ? a = b, true : false); }; auto setmineq = [](auto & a, auto b) { return (b <= a ? a = b, true : false); }; auto setmaxeq = [](auto & a, auto b) { return (b >= a ? a = b, true : false); }; #define SI(v) static_cast(v.size()) #define RF(e, v) for(auto & e: v) #define until(e) while(! (e)) #define if_not(e) if(! (e)) #define ef else if #define UR assert(false) #define IN(T, ...) T __VA_ARGS__; IN_(__VA_ARGS__); void IN_() { }; template void IN_(T & a, U & ... b) { cin >> a; IN_(b ...); }; template void OUT(T && a ) { cout << a << endl; } template void OUT(T && a, U && ... b) { cout << a << " "; OUT(b ...); } // ---- ---- template istream & operator>>(istream & s, vector & v) { RF(e, v) { s >> e; } return s; } template ostream & operator<<(ostream & s, vector const & v) { inc(i, SI(v)) { s << (i == 0 ? "" : " ") << v[i]; } return s; } int main() { IN(int, n, p, q); vector a(n); cin >> a; auto ok = [&]() { OUT( a); exit(0); }; auto ng = [&]() { OUT(-1); exit(0); }; if_not(next_permutation(ALL(a))) { ng(); } int P = find(ALL(a), p) - a.begin(); int Q = find(ALL(a), q) - a.begin(); if(P < Q) { ok(); } set se = { n + 1 }; bool has_q = false; inc(i, n) { int x = a.BA; a.pop_back(); if(x == q) { has_q = true; } else { se.insert(x); } int y = * se.upper_bound(x); if(has_q && y <= n) { se.erase(n + 1); se.erase(y); a.PB(y); if(se.count(p) == 0) { se.insert(q); } until(se.empty()) { int z = * se.begin(); se.erase(z); a.PB(z); if(z == p) { se.insert(q); } } assert(SI(a) == n); ok(); } } ng(); }