#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #pragma warning (disable: 4996) using namespace std; using ll = long long; unsigned euclidean_gcd(unsigned a, unsigned b) { if (a < b) return euclidean_gcd(b, a); unsigned r; while ((r = a % b)) { a = b; b = r; } return b; } ll ll_gcd(ll a, ll b) { if (a < b) return ll_gcd(b, a); ll r; while ((r = a % b)) { a = b; b = r; } return b; } struct UnionFind { vector par; vector siz; UnionFind(ll sz_) : par(sz_), siz(sz_, 1LL) { for (ll i = 0; i < sz_; ++i) par[i] = i; } void init(ll sz_) { par.resize(sz_); siz.assign(sz_, 1LL); for (ll i = 0; i < sz_; ++i) par[i] = i; } ll root(ll x) { while (par[x] != x) { x = par[x] = par[par[x]]; } return x; } bool merge(ll x, ll y) { x = root(x); y = root(y); if (x == y) return false; if (siz[x] < siz[y]) swap(x, y); siz[x] += siz[y]; par[y] = x; return true; } bool issame(ll x, ll y) { return root(x) == root(y); } ll size(ll x) { return siz[root(x)]; } }; long long modpow(long long a, long long n, long long mod) { if (n < 0)return 0; long long res = 1; while (n > 0) { if (n & 1) res = res * a % mod; a = a * a % mod; n >>= 1; } return res; } long long modinv(long long a, long long mod) { return modpow(a, mod - 2, mod); } vector tpsort(vector>& G) { int V = G.size(); vector sorted_vertices; queue que; vector indegree(V); for (int i = 0; i < V; i++) { for (int j = 0; j < G[i].size(); j++) { indegree[G[i][j]]++; } } for (int i = 0; i < V; i++) { if (indegree[i] == 0) { que.push(i); } } while (que.empty() == false) { int v = que.front(); que.pop(); for (int i = 0; i < G[v].size(); i++) { int u = G[v][i]; indegree[u] -= 1; if (indegree[u] == 0) que.push(u); } sorted_vertices.push_back(v); } return sorted_vertices; } struct Point { double x; double y; }; struct LineSegment { Point start; Point end; }; double tenkyori(const LineSegment& line, const Point& point) { double x0 = point.x, y0 = point.y; double x1 = line.start.x, y1 = line.start.y; double x2 = line.end.x, y2 = line.end.y; double a = x2 - x1; double b = y2 - y1; double a2 = a * a; double b2 = b * b; double r2 = a2 + b2; double tt = -(a * (x1 - x0) + b * (y1 - y0)); if (tt < 0) return sqrt((x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0)); else if (tt > r2) return sqrt((x2 - x0) * (x2 - x0) + (y2 - y0) * (y2 - y0)); double f1 = a * (y1 - y0) - b * (x1 - x0); return sqrt((f1 * f1) / r2); } void dfs1(vector>& z, ll k, ll oya, ll& ans, vector& b) { for (auto m : z[k]) { if (m != oya)dfs1(z, m, k, ans, b); } vector s; for (auto m : z[k]) { if (m != oya)s.push_back(b[m]); } ll m = b.size() - 1; for (auto d : s) { m -= d; } b[k] = b.size() - m; if (m != 0)s.push_back(m); ll a = modinv(2, 1000000007); for (auto d : s) { a += 1000000007 - modinv(modpow(2, b.size() - d, 1000000007), 1000000007); } a += modinv(modpow(2, b.size(), 1000000007), 1000000007) * (z[k].size() - 1); ans += a; ans %= 1000000007; return; } ll merge_cnt(vector& a) { int n = a.size(); if (n <= 1) { return 0; } ll cnt = 0; vector b(a.begin(), a.begin() + n / 2); vector c(a.begin() + n / 2, a.end()); cnt += merge_cnt(b); cnt += merge_cnt(c); int ai = 0, bi = 0, ci = 0; while (ai < n) { if (bi < b.size() && (ci == c.size() || b[bi] <= c[ci])) { a[ai++] = b[bi++]; } else { cnt += n / 2 - bi; a[ai++] = c[ci++]; } } return cnt; } int main() { ll n; cin >> n; ll s, t; cin >> s >> t; s--; t--; vector z(n); ll u = 1000000000000; ll ans = 0; for (int i = 0; i < n; i++) { cin >> z[i]; ans += z[i]; } for (int i = 0; i < n; i++) { ll a = min({ abs(i - s),abs(n + i - s),abs(n + s - i) }); ll b= min({ abs(i - t),abs(n + i - t),abs(n + t - i) }); if (b < a)ans -= z[i]*2; if (b == a) { if (n % 2 == 0)u = min(u, z[i]); } } if (u != 1000000000000)ans -= u*2; cout << ans << endl; }