Submission #1515803

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Source Code Expand

#include "bits/stdc++.h"
using namespace std;

unsigned long xor128() {
        static unsigned long x = 123456789, y = 362436069, z = 521288629, w = 88675123;
        unsigned long t = (x ^ (x << 11));
        x = y; y = z; z = w;
        return (w = (w ^ (w >> 19)) ^ (t ^ (t >> 8)));
}

struct node_t {
        int sz;
        long long val, add, sum;
        shared_ptr<node_t> lchild, rchild;
        node_t(long long val, int sz, long long add, long long sum, shared_ptr<node_t> lchild, shared_ptr<node_t> rchild)
                     : val(val), sz(sz), add(add), sum(sum), lchild(lchild), rchild(rchild) {}
};

using node = shared_ptr<node_t>;

int size(node t) { return !t ? 0 : t->sz; }
long long sum(node t) { return !t ? 0 : t->sum; }

node add(node v, long long a) {
        if (!v) return NULL;
        int sz = v->sz;
        return node(new node_t(v->val, sz, v->add + a, v->sum + a * sz, v->lchild, v->rchild));
}

node new_node(long long val) {
        return node(new node_t(val, 1, 0, val, NULL, NULL));
}

node make_node(long long val, node left, node right, long long a) {
        int sz = size(left) + size(right) + 1;
        return node(new node_t(val, sz, a, sum(left) + sum(right) + val + a * sz, left, right));
}

node merge(node left, node right) {
        if (!left || !right) return !left ? right : left;
        if (int(xor128() % (size(left) + size(right)) < size(left))) {
                if (left->add == 0) { 
                        return make_node(left->val, left->lchild, merge(left->rchild, right), 0);
                }
                node lv = add(left->lchild, left->add);
                node rv = merge(add(left->rchild, left->add), right);
                return make_node(left->val + left->add, lv, rv, 0);
        } else {
                if (right->add == 0) {
                        return make_node(right->val, merge(left, right->lchild), right->rchild, 0);
                }
                node lv = merge(left, add(right->lchild, right->add));
                node rv = add(right->rchild, right->add);
                return make_node(right->val + right->add, lv, rv, 0);
        }
}

pair<node, node> split(node t, int k) { //[0, k), [k, n)
        if (k == 0) return pair<node, node>(NULL, t);
        if (k >= size(t)) return pair<node, node>(t, NULL);
        if (size(t->lchild) >= k) {
                auto left = split(t->lchild, k);
                auto rv = make_node(t->val, left.second, t->rchild, t->add);
                if (t->add == 0) return make_pair(left.first, rv);
                return make_pair(add(left.first, t->add), rv);
        } else {
                auto right = split(t->rchild, k - size(t->lchild) - 1);
                auto lv = make_node(t->val, t->lchild, right.first, t->add);
                if (t->add == 0) return make_pair(lv, right.second);
                return make_pair(lv, add(right.second, t->add));
        }
}

int main() {
        int n, q;
        cin >> n >> q;
        node tree = NULL;
        for (int i = 0; i < n; i ++) {
                int x;
                cin >> x;
                tree = merge(tree, new_node(x));
        }
        while (q --) {
                int type, a, b, c, d, v;
                cin >> type;
                if (type == 1) {
                        cin >> a >> b >> v;
                        auto y = split(tree, b);
                        auto x = split(y.first, a - 1);
                        tree = merge(x.first, merge(add(x.second, v), y.second));
                } else if (type == 2) {
                        cin >> a >> b >> c >> d;
                        auto mid = split(split(tree, d).first, c - 1).second;
                        auto x = split(tree, b);
                        auto left = split(x.first, a - 1).first;
                        auto right = x.second;
                        tree = merge(left, merge(mid, right));
                } else {
                        cin >> a >> b;
                        long long ans = sum(split(split(tree, b).first, a - 1).second);
                        cout << ans << endl;
                }
        }
        return 0;
}

Submission Info

Judge Result