Submission #937949

#	Time	Username	Problem	Language	Result	Execution time	Memory
937949		Muaath_5	Game (IOI13_game)	C++17	63 / 100	1445 ms	256000 KiB

game

#include "game.h"
#define ll long long
#define OUT 0ll

ll gcd2(ll x, ll y) {
    if (y == 0) return x;
    return gcd2(y, x % y);
}

#define merge gcd2
using namespace std;

static int R = 1, C = 1;

struct ynode {
    ll val = OUT;
    ynode* left = nullptr, * right = nullptr;
};

struct xnode {
    xnode* left = nullptr, * right = nullptr;
    ynode* yy = nullptr;
};

ll query_y(const int& qy1, const int& qy2, ynode* node, int l = 0, int r = C - 1)
{
    if (node == nullptr || r < qy1 || qy2 < l) return OUT;
    if (qy1 <= l && r <= qy2) return node->val;
    const int mid = (l + r) / 2;
    return merge(
        query_y(qy1, qy2, node->left, l, mid),
        query_y(qy1, qy2, node->right, mid + 1, r)
    );
}

ll query_x(const int& qx1, const int& qy1, const int& qx2, const int& qy2, xnode* node, int l = 0, int r = R - 1)
{
    if (node == nullptr || r < qx1 || qx2 < l) return OUT;
    if (qx1 <= l && r <= qx2) return query_y(qy1, qy2, node->yy);
    const int mid = (l + r) / 2;
    return merge(
        query_x(qx1, qy1, qx2, qy2, node->left, l, mid),
        query_x(qx1, qy1, qx2, qy2, node->right, mid + 1, r)
    );
}


void update_y(const int& qy, const ll& val, ynode* node, int l = 0, int r = C - 1)
{
    if (l == r) {
        node->val = val;
        return;
    }
    const int mid = (l + r) / 2;
    if (qy <= mid) {
        if (!node->left) node->left = new ynode();
        update_y(qy, val, node->left, l, mid);
    }
    else {
        if (!node->right) node->right = new ynode();
        update_y(qy, val, node->right, mid + 1, r);
    }
    ll m1 = OUT, m2 = OUT;
    if (node->left) m1 = node->left->val;
    if (node->right) m2 = node->right->val;
    node->val = merge(m1, m2);
}

void update_x(const int& qx, const int& qy, const ll& val, xnode* node, int l = 0, int r = R - 1)
{
    if (!node->yy) node->yy = new ynode();
    if (l == r) {
        update_y(qy, val, node->yy);
        return;
    }
    const int mid = (l + r) / 2;
    if (qx <= mid) {
        if (!node->left) node->left = new xnode();
        update_x(qx, qy, val, node->left, l, mid);
    }
    else {
        if (!node->right) node->right = new xnode();
        update_x(qx, qy, val, node->right, mid + 1, r);
    }
    update_y(qy, merge(
        (node->left && node->left->yy ? query_y(qy, qy, node->left->yy) : OUT),
        (node->right && node->right->yy ? query_y(qy, qy, node->right->yy) : OUT)
    ), node->yy);
}


xnode* root;

void init(int r, int c) { R = r, C = c, root = new xnode(); }
void update(int x, int y, long long k) { update_x(x, y, k, root); }
long long calculate(int x1, int y1, int x2, int y2) { return query_x(x1, y1, x2, y2, root); }

• Subtask 1: 10 / 10
• Subtask 2: 27 / 27
• Subtask 3: 26 / 26
• Subtask 4: 0 / 17
• Subtask 5: 0 / 20