Submission #1246565

#	Time	Username	Problem	Language	Result	Execution time	Memory
1246565		aykhn	Game (IOI13_game)	C++20	0 / 100	0 ms	328 KiB

game

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

using namespace std;

const int MXN = 2e3 + 5;

int n, m;
int t[MXN << 2][MXN << 2];

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

int sum_y(int vx, int vy, int tly, int try_, int ly, int ry) {
    if (ly > ry) 
        return 0;
    if (ly == tly && try_ == ry)
        return t[vx][vy];
    int tmy = (tly + try_) / 2;
    return gcd(sum_y(vx, vy*2, tly, tmy, ly, min(ry, tmy)), sum_y(vx, vy*2+1, tmy+1, try_, max(ly, tmy+1), ry));
}

int sum_x(int vx, int tlx, int trx, int lx, int rx, int ly, int ry) {
    if (lx > rx)
        return 0;
    if (lx == tlx && trx == rx)
        return sum_y(vx, 1, 0, m-1, ly, ry);
    int tmx = (tlx + trx) / 2;
    return gcd(sum_x(vx*2, tlx, tmx, lx, min(rx, tmx), ly, ry), sum_x(vx*2+1, tmx+1, trx, max(lx, tmx+1), rx, ly, ry));
}
void update_y(int vx, int lx, int rx, int vy, int ly, int ry, int x, int y, int new_val) {
    if (ly == ry) {
        if (lx == rx)
            t[vx][vy] = new_val;
        else
            t[vx][vy] = gcd(t[vx*2][vy], t[vx*2+1][vy]);
    } else {
        int my = (ly + ry) / 2;
        if (y <= my)
            update_y(vx, lx, rx, vy*2, ly, my, x, y, new_val);
        else
            update_y(vx, lx, rx, vy*2+1, my+1, ry, x, y, new_val);
        t[vx][vy] = gcd(t[vx][vy*2], t[vx][vy*2+1]);
    }
}

void update_x(int vx, int lx, int rx, int x, int y, int new_val) {
    if (lx != rx) {
        int mx = (lx + rx) / 2;
        if (x <= mx)
            update_x(vx*2, lx, mx, x, y, new_val);
        else
            update_x(vx*2+1, mx+1, rx, x, y, new_val);
    }
    update_y(vx, lx, rx, 1, 0, m-1, x, y, new_val);
}
void update(int P, int Q, long long K) {
  update_x(1, 0, n - 1, P, Q, K);
}

long long calculate(int P, int Q, int U, int V) {
  return sum_x(1, 0, n - 1, P, U, Q, V);
}

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