伸展树伤不起啊,很容易wa,很容易T,很容易M。

 /* 1890 */
#include <iostream>
#include <string>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <vector>
#include <deque>
#include <algorithm>
#include <cstdio>
#include <cmath>
#include <ctime>
#include <cstring>
#include <climits>
#include <cctype>
#include <cassert>
#include <functional>
#include <iterator>
#include <iomanip>
using namespace std;
//#pragma comment(linker,"/STACK:102400000,1024000") #define sti set<int>
#define stpii set<pair<int, int> >
#define mpii map<int,int>
#define vi vector<int>
#define pii pair<int,int>
#define vpii vector<pair<int,int> >
#define rep(i, a, n) for (int i=a;i<n;++i)
#define per(i, a, n) for (int i=n-1;i>=a;--i)
#define clr clear
#define pb push_back
#define mp make_pair
#define fir first
#define sec second
#define all(x) (x).begin(),(x).end()
#define SZ(x) ((int)(x).size())
#define lson l, mid, rt<<1
#define rson mid+1, r, rt<<1|1
#define grandlson ch[ch[root][1]][0] typedef struct node_t {
int id, val;
node_t() {}
friend bool operator<(const node_t& a, const node_t& b) {
if (a.val != b.val)
return a.val < b.val;
return a.id < b.id;
}
} node_t; const int maxn = 1e5+;
int pre[maxn], ch[maxn][], size[maxn], rev[maxn];
node_t nd[maxn];
int root, tot, n;
int ans[maxn]; void newNode(int& r, int k, int fa) {
r = k;
pre[r] = fa;
ch[r][] = ch[r][] = ;
size[r] = ;
rev[r] = ;
} void PushUp(int r) {
size[r] = size[ch[r][]] + size[ch[r][]] + ;
} void UpdateRev(int r) {
if (r == ) return ; swap(ch[r][], ch[r][]);
rev[r] ^= ;
} void PushDown(int r) {
if (rev[r]) {
UpdateRev(ch[r][]);
UpdateRev(ch[r][]);
rev[r] = ;
}
} void Build(int& rt, int l, int r, int fa) {
if (l > r) return ; int mid = (l + r) >> ;
newNode(rt, mid, fa);
Build(ch[rt][], l, mid-, rt);
Build(ch[rt][], mid+, r, rt);
PushUp(rt);
} void Rotate(int x, int d) {
int y = pre[x];
PushDown(y);
PushDown(x);
ch[y][d^] = ch[x][d];
pre[ch[x][d]] = y;
if (pre[y])
ch[pre[y]][ch[pre[y]][]==y] = x;
pre[x] = pre[y];
ch[x][d] = y;
pre[y] = x;
PushUp(y);
} void Splay(int r, int goal) { PushDown(r);
while (pre[r] != goal) {
if (pre[pre[r]] == goal) {
PushDown(pre[r]);
PushDown(r);
Rotate(r, ch[pre[r]][]==r);
} else {
PushDown(pre[pre[r]]);
PushDown(pre[r]);
PushDown(r);
int y = pre[r];
int d = ch[pre[y]][]==y;
if (ch[y][d] == r) {
Rotate(r, d^);
Rotate(r, d);
} else {
Rotate(y, d);
Rotate(r, d);
}
}
} PushUp(r);
if (goal == )
root = r;
} int kth(int r, int k) {
int sz = size[ch[r][]] + ; PushDown(r);
if (k == sz)
return r;
if (k < sz)
return kth(ch[r][], k);
else
return kth(ch[r][], k-sz);
} int getNext(int rt) {
PushDown(rt);
if (ch[rt][] == ) return -;
rt = ch[rt][];
while (ch[rt][]) {
rt = ch[rt][];
PushDown(rt);
}
return rt;
} void init() {
ch[root][] = ch[root][] = size[root] = rev[root] = ;
newNode(root, n+, );
newNode(ch[root][], n+, root);
Build(grandlson, , n, ch[root][]);
PushUp(ch[root][]);
PushUp(root);
} void inorder(int rt) {
if (rt == ) return ; inorder(ch[rt][]);
printf("rt = %d, lson = %d, rson = %d, fa = %d, sz = %d, rev = %d\n",
rt, ch[rt][], ch[rt][], pre[rt], size[rt], rev[rt]);
inorder(ch[rt][]);
} int main() {
ios::sync_with_stdio(false);
#ifndef ONLINE_JUDGE
freopen("data.in", "r", stdin);
freopen("data.out", "w", stdout);
#endif int r; while (scanf("%d", &n)!=EOF && n) {
rep(i, , n+) {
scanf("%d", &nd[i].val);
nd[i].id = i;
}
init();
sort(nd+, nd++n);
rep(i, , n+) {
r = nd[i].id;
Splay(r, );
ans[i] = size[ch[root][]];
Splay(kth(root, i), );
Splay(getNext(r), root);
UpdateRev(grandlson);
}
rep(i, , n+) {
printf("%d", ans[i]);
if (i == n)
putchar('\n');
else
putchar(' ');
}
} #ifndef ONLINE_JUDGE
printf("time = %d.\n", (int)clock());
#endif return ;
}
05-08 14:59