Submission #756268

#	Time	Username	Problem	Language	Result	Execution time	Memory
756268		alex_2008	Game (IOI13_game)	C++14	63 / 100	1555 ms	256000 KiB

game

#include "game.h"
#include <iostream>
using namespace std;
typedef long long ll;
int n, m;
ll qans;
ll gcd(ll a, ll b) {
    while (a && b) {
        (a > b) ? a %= b : b %= a;
    }
    return a + b;
}
struct Nodex {
    int left;
    int right;
    Nodex* ls;
    Nodex* rs;
    ll val;
};
struct Nodey {
    int left;
    int right;
    Nodey* ls;
    Nodey* rs;
    Nodex* root;
};
Nodey* Root;
void queryX(Nodex* v, int C1, int C2) {
    if (v->right < C1 || v->left > C2) return;
    if (v->left >= C1 && v->right <= C2) {
        qans = gcd(qans, v->val);
        return;
    }
    if (v->ls == nullptr) {
        qans = gcd(qans, v->val);
        return;
    }
    queryX(v->ls, C1, C2);
    queryX(v->rs, C1, C2);
}
void queryY(Nodey* v, int R1, int C1, int R2, int C2) {
    if (v->left > R2 || v->right < R1) {
        return;
    }
    if (v->left >= R1 && v->right <= R2) {
        if (v->root == nullptr) {
            Nodex* rt = new Nodex{ 1, m, nullptr, nullptr, 0 };
            v->root = rt;
        }
        queryX(v->root, C1, C2);
        return;
    }
    if (v->ls == nullptr) {
        int mid = (v->left + v->right) / 2;
        Nodey* ls = new Nodey{ v->left, mid, nullptr, nullptr, nullptr };
        Nodey* rs = new Nodey{ mid + 1, v->right, nullptr, nullptr, nullptr };
        v->ls = ls;
        v->rs = rs;
    }
    queryY(v->ls, R1, C1, R2, C2);
    queryY(v->rs, R1, C1, R2, C2);
}
void Updatex(Nodex* v, int C, ll val) {
    if (v->left > C || v->right < C) return;
    if (v->left == v->right) {
        v->val = val;
        return;
    }
    if (v->ls == nullptr) {
        int mid = (v->left + v->right) / 2;
        Nodex* ls = new Nodex{ v->left, mid, nullptr, nullptr, v->val };
        Nodex* rs = new Nodex{ mid + 1, v->right, nullptr, nullptr, v->val };
        Updatex(ls, C, val);
        Updatex(rs, C, val);
        v->val = gcd(ls->val, rs->val);
        v->ls = ls;
        v->rs = rs;
        return;
    }
    Updatex(v->ls, C, val);
    Updatex(v->rs, C, val);
    v->val = gcd(v->ls->val, v->rs->val);
    return;
}
void Updatey(Nodey* v, int R, int C, ll val) {
    if (v->root == nullptr) {
        v->root = new Nodex{ 1, m, nullptr, nullptr, 0 };
    }
    if (v->left > R || v->right < R) return;
    if (v->left == v->right) {
        Updatex(v->root, C, val);
        return;
    }
    if (v->ls == nullptr) {
        int mid = (v->left + v->right) / 2;
        Nodey* ls = new Nodey{ v->left, mid, nullptr, nullptr, nullptr };
        Nodey* rs = new Nodey{ mid + 1, v->right, nullptr, nullptr, nullptr };
        Updatey(ls, R, C, val);
        Updatey(rs, R, C, val);
        v->ls = ls;
        v->rs = rs;
    }
    Updatey(v->ls, R, C, val);
    Updatey(v->rs, R, C, val);
    qans = 0;
    queryX(v->ls->root, C, C);
    queryX(v->rs->root, C, C);
    Updatex(v->root, C, qans);
}
void init(int R, int C) {
    n = R;
    m = C;
    Root = new Nodey{ 1, n, nullptr, nullptr, nullptr };
}
void update(int R, int Q, long long K) {
    Updatey(Root, R + 1, Q + 1, K);
}
long long calculate(int P, int Q, int U, int V) {
    qans = 0;
    queryY(Root, P + 1, Q + 1, U + 1, V + 1);
    return qans;
}

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