Submission #416719

#	Time	Username	Problem	Language	Result	Execution time	Memory
416719		Tangent	Game (IOI13_game)	C++17	63 / 100	13077 ms	59036 KiB

game

#include "game.h"
#include "bits/stdc++.h"

using namespace std;

typedef long long ll;
typedef vector<ll> vll;
typedef vector<int> vii;
typedef vector<vll> vvll;
typedef vector<vii> vvii;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<pll> vpll;
typedef vector<pii> vpii;
typedef vector<vpll> vvpll;
typedef vector<vpii> vvpii;

#define ffor(i, a, b) for (ll i = a; i < b; i++)
#define rep(i, n) ffor(i, 0, n)
#define forin(x, a) for (auto &x: a)
#define all(x) x.begin(), x.end()

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;
}

ll r, c;
unordered_map<ll, ll> t;

ll gett(int y, int x) {
    ll k = 4 * r * y + x;
    if (t.find(k) == t.end()) {
        return 0;
    }
    return t[k];
}

void sett(int y, int x, ll v) {
    ll k = 4 * r * y + x;
    if (v) {
        t[k] = v;
    } else {
        t.erase(k);
    }
    // cout << y << ' ' << x << ' ' << v << '\n';
}

void init(int R, int C) {
    r = R;
    c = C;
}



void upd2(int y, int x, long long v, int y1, int y2, int x1, int x2, int yt, int xt) {
    if (y1 == y2) {
        if (x1 == x2) {
            sett(y, x, v);
        } else {
            sett(y, x, gcd2(gett(y, 2 * x), gett(y, 2 * x + 1)));
        }
    } else {
        int my = (y1 + y2) / 2;
        if (yt <= my) {
            upd2(y * 2, x, v, y1, my, x1, x2, yt, xt);
        } else {
            upd2(y * 2 + 1, x, v, my + 1, y2, x1, x2, yt, xt);
        }
        sett(y, x, gcd2(gett(y * 2, x), gett(y * 2 + 1, x)));
    }
}

void upd(int y, int x, long long v, int y1, int y2, int x1, int x2, int yt, int xt) {
    if (x1 != x2) {
        int mx = (x1 + x2) / 2;
        if (xt <= mx) {
            upd(y, x * 2, v, y1, y2, x1, mx, yt, xt);
        } else {
            upd(y, x * 2 + 1, v, y1, y2, mx + 1, x2, yt, xt);
        }
    }
    upd2(y, x, v, y1, y2, x1, x2, yt, xt);
}

void update(int P, int Q, long long K) {
    upd(1, 1, K, 0, c - 1, 0, r - 1, Q, P);
}

ll query(int y, int x, int y1, int y2, int x1, int x2, int yt1, int xt1, int yt2, int xt2) {
    if (x1 == xt1 && x2 == xt2) {
        if (y1 == yt1 && y2 == yt2) {
            return gett(y, x);
        } else {
            int my = (y1 + y2) / 2;
            ll res = 0;
            if (yt1 <= my) {
                res = gcd2(res, query(y * 2, x, y1, my, x1, x2, yt1, xt1, min(yt2, my), xt2));
            }
            if (yt2 > my) {
                res = gcd2(res, query(y * 2 + 1, x, my + 1, y2, x1, x2, max(yt1, my + 1), xt1, yt2, xt2));
            }
            return res;
        }
    } else {
        int mx = (x1 + x2) / 2;
        ll res = 0;
        if (xt1 <= mx) {
            res = gcd2(res, query(y, x * 2, y1, y2, x1, mx, yt1, xt1, yt2, min(xt2, mx)));
        }
        if (xt2 > mx) {
            res = gcd2(res, query(y, x * 2 + 1, y1, y2, mx + 1, x2, yt1, max(xt1, mx + 1), yt2, xt2));
        }
        return res;
    }
}

long long calculate(int x1, int y1, int x2, int y2) {
    return query(1, 1, 0, c - 1, 0, r - 1, y1, x1, y2, x2);
}

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