#include #include #include #include #include #include #include #include #include #include static const int MOD = 1000000007; using ll = long long; using u32 = unsigned; using u64 = unsigned long long; using namespace std; template constexpr T INF = ::numeric_limits::max()/32*15+208; template vector make_v(U size, const T& init){ return vector(static_cast(size), init); } template auto make_v(U size, Ts... rest) { return vector(static_cast(size), make_v(rest...)); } template void chmin(T &a, const T &b){ a = (a < b ? a : b); } template void chmax(T &a, const T &b){ a = (a > b ? a : b); } template class CHT { using P = pair; deque

lines; public: CHT() = default; int sgn(T x) { return x == 0 ? 0 : (x > 0 ? 1 : -1); } bool check(P l1, P l2, P l3){ if(l1.second == l2.second || l2.second == l3.second){ return sgn(l1.first - l2.first)*sgn(l2.second - l3.second) >= sgn(l2.first - l3.first)*sgn(l1.second - l2.second); }else { return (l1.first - l2.first)*sgn(l2.second - l3.second)/ static_cast(abs(l1.second - l2.second)) >= (l2.first - l3.first)*sgn(l1.second - l2.second)/ static_cast(abs(l2.second - l3.second)); } } void add_line(T a, T b) { // add ax + b if(get_max) a = -a, b = -b; P L(a, b); if(lines.empty()){ lines.emplace_back(L); return; } if(lines.front().first <= a){ if(lines.front().first == a){ if(lines.front().second <= b) return; else lines.pop_front(); } while(lines.size() >= 2 && check(L, lines.front(), lines[1])) lines.pop_front(); lines.emplace_front(L); }else { if(lines.back().first == a){ if(lines.back().second <= b) return; else lines.pop_back(); } while(lines.size() >= 2 && check(lines[lines.size()-2], lines.back(), L)) lines.pop_back(); lines.emplace_back(L); } } T val(const P &L, const T &x) { return L.first * x + L.second; } T query(T x){ int l = -1, r = lines.size() - 1; while(r - l > 1){ int mid = (l+r) >> 1; if(val(lines[mid], x) >= val(lines[mid+1], x)) l = mid; else r = mid; } return get_max ? -val(lines[r], x) : val(lines[r], x); } T query_increase(T x){ while(lines.size() >= 2 && val(lines.front(), x) >= val(lines[1], x)) lines.pop_front(); return get_max ? -val(lines.front(), x) : val(lines.front(), x); } T query_decrease(T x){ while(lines.size() >= 2 && val(lines.back(), x) >= val(lines[lines.size() - 2], x)) lines.pop_back(); return get_max ? -val(lines.back(), x) : val(lines.back(), x); } }; int main() { int n; cin >> n; vector v(n); for (auto &&i : v) scanf("%lld", &i); vector S(n+1); for (int i = 0; i < n; ++i) { S[i+1] = S[i] + v[i]; } auto dp = make_v(n+1, n+1, INF); for (int i = 0; i <= n; ++i) { dp[i][0] = 0; dp[i][i] = S[i]*S[i]; } for (int len = 1; len <= n; ++len) { // len = i-j; CHT cht; for (int j = 1; j + len <= n; ++j) { int i = j + len; cht.add_line(-2*S[i-1], dp[i-2][j-1]+S[i-1]*S[i-1]); dp[i][j] = min(dp[i-1][j], S[i]*S[i] + cht.query_increase(S[i])); } } for (int i = 1; i <= n; ++i) { ll ans = INF; for (int j = 0; j <= n; ++j) { ans = min(ans, dp[j][i]); } cout << ans << "\n"; } return 0; }