Submission #790475

#	Time	Username	Problem	Language	Result	Execution time	Memory
790475		Valaki2	Game (IOI13_game)	C++14	63 / 100	5326 ms	256000 KiB

game

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

//#define int long long
#define ll long long
#define pb push_back

#define __gcd gcd2

long long gcd2(long long X, long long Y) {
    long long tmp;
    while (X != Y && Y != 0) {
        tmp = X;
        X = Y;
        Y = tmp % Y;
    }
    return X;
}

int n, m;

unordered_map<ll, unordered_map<ll, ll> > tree;

vector<int> idcs;
void upd(int vx, int vy, int vlx, int vrx, int vly, int vry, int x, int y, ll val) {
    if(vlx == vrx) {
        if(vly == vry) {
            idcs.pb(vy);
            tree[vx][vy] = val;
            return;
        }
        idcs.pb(vy);
        int mid = (vly + vry) / 2;
        if(y <= mid) {
            upd(vx, 2 * vy, vlx, vrx, vly, mid, x, y, val);
        } else {
            upd(vx, 2 * vy + 1, vlx, vrx, mid + 1, vry, x, y, val);
        }
        tree[vx][vy] = __gcd(tree[vx][2 * vy], tree[vx][2 * vy + 1]);
        return;
    }
    int mid = (vlx + vrx) / 2;
    if(x <= mid) {
        upd(2 * vx, vy, vlx, mid, vly, vry, x, y, val);
    } else {
        upd(2 * vx + 1, vy, mid + 1, vrx, vly, vry, x, y, val);
    }
    for(int idx : idcs) {
        tree[vx][idx] = __gcd(tree[2 * vx][idx], tree[2 * vx + 1][idx]);
    }
}

ll que(int vx, int vy, int vlx, int vrx, int vly, int vry, int qlx, int qrx, int qly, int qry) {
    if(vlx == qlx && vrx == qrx) {
        if(vly == qly && vry == qry) {
            return tree[vx][vy];
        }
        if(vly > qry || vry < qly) {
            return 0ll;
        }
        int mid = (vly + vry) / 2;
        return __gcd(que(vx, 2 * vy, vlx, vrx, vly, mid, qlx, qrx, qly, min(qry, mid)), 
                    que(vx, 2 * vy + 1, vlx, vrx, mid + 1, vry, qlx, qrx, max(qly, mid + 1), qry));
    }
    if(vlx > qrx || vrx < qlx) {
        return 0ll;
    }
    int mid = (vlx + vrx) / 2;
    return __gcd(que(2 * vx, vy, vlx, mid, vly, vry, qlx, min(qrx, mid), qly, qry), 
                que(2 * vx + 1, vy, mid + 1, vrx, vly, vry, max(qlx, mid + 1), qrx, qly, qry));
}

void init(signed R, signed C) {
    n = R, m = C;
    //
}

void update(signed P, signed Q, ll K) {
    P++, Q++;
    int x = P, y = Q;
    ll val = K;
    idcs.clear();
    upd(1, 1, 1, n, 1, m, x, y, val);
}

ll calculate(signed P, signed Q, signed U, signed V) {
    P++, Q++, U++, V++;
    int a = P, b = Q, c = U, d = V;
    ll res = 0;
    res = que(1, 1, 1, n, 1, m, a, c, b, d);
    return res;
}

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