1 序列
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#include <bits/stdc++.h> using namespace std; const int N = 1e5 + 10; int a[N], b[N], c[N]; priority_queue<int, vector<int>, greater<int> > q; priority_queue<int, vector<int>, less<int> > Q; int val1[N], val2[N]; int n; int cost1[N], cost2[N]; void upd(int d[], int l, int r, int val[]) { if (d[l] > l) { int j = r; for (int i = r; i >= l; i -= 2) { while (j >= l && d[j] >= i) Q.push(a[d[j]]), j -= 2; val[i] = Q.top(); Q.pop(); } } else { int j = l; for (int i = l; i <= r; i += 2) { while (j <= r && d[j] <= i) q.push(a[d[j]]), j += 2; val[i] = q.top(); q.pop(); } } } void solve1() { int pos1 = 1, pos2 = 2; for (int i = 1; i <= n; i++) { if (a[i] & 1) { b[pos1] = i; cost1[pos1] = abs(i - pos1); pos1 += 2; } else { b[pos2] = i; cost1[pos2] = abs(i - pos2); pos2 += 2; } } for (int st = 1; st <= 2; st++) { for (int i = st; i <= n; i += 2) { if (b[i] == i) { val1[i] = a[b[i]]; continue; } if (b[i] < i) { int j = i; for (; j <= n && b[j] < j; j += 2) ; upd(b, i, j - 2, val1); i = j - 2; } else { int j = i; for (; j <= n && b[j] > j; j += 2) ; upd(b, i, j - 2, val1); i = j - 2; } } } } void solve2() { int pos1 = 1, pos2 = 2; for (int i = 1; i <= n; i++) { if (a[i] & 1) { c[pos2] = i; cost2[pos2] = abs(i - pos2); pos2 += 2; } else { c[pos1] = i; cost2[pos1] = abs(i - pos1); pos1 += 2; } } for (int st = 1; st <= 2; st++) { for (int i = st; i <= n; i += 2) { if (c[i] == i) { val2[i] = a[c[i]]; continue; } if (c[i] < i) { int j = i; for (; j <= n && c[j] < j; j += 2) ; upd(c, i, j - 2, val2); i = j - 2; } else { int j = i; for (; j <= n && c[j] > j; j += 2) ; upd(c, i, j - 2, val2); i = j - 2; } } } } int main() { cin.tie(0)->sync_with_stdio(0), cout.tie(0); cin >> n; for (int i = 1; i <= n; i++) cin >> a[i]; int cnt = 0; for (int i = 1; i <= n; i++) cnt += a[i] & 1; if (n & 1) { if (n - cnt < cnt) { solve1(); for (int i = 1; i <= n; i++) cout << val1[i] << ' '; } else { solve2(); for (int i = 1; i <= n; i++) cout << val2[i] << ' '; } } else { solve1(); solve2(); long long ans1 = 0, ans2 = 0; for (int i = 1; i <= n; i++) { ans1 += cost1[i]; ans2 += cost2[i]; } int flag = 1; if (ans1 < ans2) flag = 1; else if (ans1 > ans2) flag = 2; else { for (int i = 1; i <= n; i++) { if (val1[i] == val2[i]) continue; else { if (val1[i] < val2[i]) flag = 1; else flag = 2; } } } if (flag == 1) for (int i = 1; i <= n; i++) cout << val1[i] << ' '; else for (int i = 1; i <= n; i++) cout << val2[i] << ' '; } } |
2 灯泡
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// 写不来 |
3 比赛
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// 写不来 |
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