百练4090:超级备忘录

传送门：http://bailian.openjudge.cn/practice/4090/

【题解】

垃圾题目暴力能过？？？

splay，那个revolve相当于交换区间，瞎搞搞。

就这垃圾题目还tm卡常真是没话说了

加一坨rg和st，把回收队列改成自己写的栈就过了。。

6s-》4s

pkusc如果有这种题记得卡卡常。

# include <queue>
# include <stdio.h>
# include <string.h>
# include <iostream>
# include <algorithm>
// # include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
const int M = 2e5 + 10;
const int mod = 1e9+7;

# define RG register
# define ST static

ST int n;

ST int a[M], id[M], m;

namespace Splay {
    ST int ch[M][2], fa[M], s[M], v[M], sz[M];
    ST bool rev[M]; ST int tag[M], siz, rt;    
    ST int re[M], rn;
    
    inline void clear() {
        siz = rn = 0;
    }
    
    # define ls ch[x][0]
    # define rs ch[x][1]
    inline void up(int x) {
        if(!x) return ;
        s[x] = v[x];
        if(ls) s[x] = min(s[x], s[ls]);
        if(rs) s[x] = min(s[x], s[rs]);
        sz[x] = sz[ls] + sz[rs] + 1;
    }
    inline void pushrev(int x) {
        if(!x) return ;
        swap(ch[x][0], ch[x][1]);
        rev[x] ^= 1;
    }
    inline void pushtag(int x, int t) {
        tag[x] += t;
        s[x] += t, v[x] += t;
    }
    inline void down(int x) {
        if(!x) return ;
        if(rev[x]) {
            pushrev(ls); pushrev(rs);
            rev[x] ^= 1;
        }
        if(tag[x]) {
            pushtag(ls, tag[x]); pushtag(rs, tag[x]);
            tag[x] = 0;
        }
    }
    # undef ls
    # undef rs
    inline void rotate(int x, int &rt) {
        int y = fa[x], z = fa[y], ls = ch[y][1] == x, rs = ls^1;
        if(y == rt) rt = x;
        else ch[z][ch[z][1] == y] = x;
        fa[ch[x][rs]] = y, fa[y] = x, fa[x] = z;
        ch[y][ls] = ch[x][rs]; ch[x][rs] = y;
        up(y), up(x);
    }
    int st[M];
    inline void splay(int x, int &rt) {
        int stn = 0, tx = x;
        while(tx != rt) {
            st[++stn] = tx;
            tx = fa[tx];
        }
        st[++stn] = tx;
        for (int i=stn; i; --i) down(st[i]);
        while(x != rt) {
            int y = fa[x], z = fa[y];
            if(y != rt) {
                if((ch[y][0] == x) ^ (ch[z][0] == y)) rotate(x, rt);
                else rotate(y, rt);
            }
            rotate(x, rt);
        }
    }
    
    inline int find(int x, int rnk) {
        down(x);
        if(sz[ch[x][0]] + 1 == rnk) return x;
        if(sz[ch[x][0]] + 1 < rnk) return find(ch[x][1], rnk-sz[ch[x][0]]-1);
        else return find(ch[x][0], rnk);
    }
    
    // [u+1, v+1]
    inline int split(int u, int v) {
        int x = find(rt, u), y = find(rt, v+2);
        splay(x, rt); splay(y, ch[x][1]);
        return ch[y][0];
    }
    
    inline void add(int u, int v, int d) {
        int x = split(u, v), y = fa[x];
        pushtag(x, d);
        up(y), up(fa[x]);
    }
    
    inline void reverse(int u, int v) {
        int x = split(u, v), y = fa[x];
        pushrev(x);
        up(y), up(fa[x]);
    }
    
    inline void gmin(int u, int v) {
        int x = split(u, v);
        printf("%d
", s[x]);
    }
    
    inline void revolve(int u, int v, int T) {
        T = T % (v-u+1);
        if(T == 0) return ;
        int x, y, xx, yy;
        // (u, v-T) (v-T+1, v)
        x = split(u, v-T), y = fa[x];
        ch[y][0] = 0, fa[x] = 0; up(y); up(fa[y]);
        
        xx = find(rt, u+T), yy = find(rt, u+T+1);
        splay(xx, rt); splay(yy, ch[xx][1]);
        ch[yy][0] = x, fa[x] = yy;
        up(yy); up(fa[yy]);
    }
    
    inline void build(int l, int r, int f) {
        if(l>r) return;
        int mid = l+r>>1;
        int x = id[mid], lst = id[f];
        if(l == r) {
            sz[x] = 1;
            v[x] = s[x] = a[l];
            fa[x] = 0, ch[x][0] = ch[x][1] = 0;
            rev[x] = 0, tag[x] = 0;
        } else build(l, mid-1, x), build(mid+1, r, x);
        v[x] = a[mid]; fa[x] = lst; up(x); ch[lst][mid >= f] = x;
    }
    
    inline void insert(int u, int d) {
        int x;
        if(!rn) x = ++siz;
        else x = re[rn--];
        v[x] = s[x] = d; sz[x] = 1;
        fa[x] = 0, ch[x][0] = ch[x][1] = 0;
        rev[x] = 0, tag[x] = 0;
        int X = find(rt, u+1), Y = find(rt, u+2);
        splay(X, rt); splay(Y, ch[X][1]);
        ch[Y][0] = x; fa[x] = Y; up(Y); up(X);
//        printf("%d
", sz[X]);
    }

    inline void del(int u) {
        int x = split(u, u), y = fa[x];
        re[++rn] = x;
        ch[y][0] = 0; fa[x] = 0;
        sz[x] = s[x] = v[x] = rev[x] = tag[x] = 0;
        ch[x][0] = ch[x][1] = 0;
        up(y), up(fa[y]);
//        printf("%d
", sz[fa[y]]);
    }
}

int main() {
    ST int q, x, y, d;
    ST char str[23]; 
    Splay::clear();
    cin >> n;
    for (RG int i=2; i<=n+1; ++i) scanf("%d", a+i), id[i] = i;
    id[1] = 1, id[n+2] = n+2;
    a[1] = a[n+2] = 23333333;
    Splay::siz = n+2;
    Splay::build(1, n+2, 0);
    Splay::rt = n+3>>1;
    cin >> q;
    while(q--) {
        scanf("%s", str);
        if(!strcmp(str, "ADD")) {
            scanf("%d%d%d", &x, &y, &d);
            Splay::add(x, y, d);
        }
        if(!strcmp(str, "REVERSE")) {
            scanf("%d%d", &x, &y);
            Splay::reverse(x, y);
        }
        if(!strcmp(str, "REVOLVE")) {
            scanf("%d%d%d", &x, &y, &d);
            Splay::revolve(x, y, d);
        }
        if(!strcmp(str, "INSERT")) {
            scanf("%d%d", &x, &d);
            Splay::insert(x, d);
        }
        if(!strcmp(str, "DELETE")) {
            scanf("%d", &x);
            Splay::del(x);
        }
        if(!strcmp(str, "MIN")) {
            scanf("%d%d", &x, &y);
            Splay::gmin(x, y);
        }
    }
    return 0;
}