Submission #156918

#	Time	Username	Problem	Language	Result	Execution time	Memory
156918		TAISA_	Game (IOI13_game)	C++14	63 / 100	3321 ms	138700 KiB

game

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

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 nx, ny;
vector<vector<ll>> dat;
void upd(int x, int y, ll to) {
    int kx = x + nx, ky = y + ny;
    dat[kx][ky] = to;
    while (kx > 0) {
        if (kx < x + nx) {
            dat[kx][ky] = gcd2(dat[kx << 1][ky], dat[kx << 1 | 1][ky]);
        }
        int k = ky;
        k >>= 1;
        while (k > 0) {
            dat[kx][k] = gcd2(dat[kx][k << 1], dat[kx][k << 1 | 1]);
            k >>= 1;
        }
        kx >>= 1;
    }
}

ll getx(int x1, int y1, int x2, int y2, int ky, int k, int l, int r) {
    if (x2 <= l || r <= x1) {
        return 0;
    }
    if (x1 <= l && r <= x2) {
        return dat[k][ky];
    }
    ll vl = getx(x1, y1, x2, y2, ky, k << 1, l, (l + r) / 2);
    ll vr = getx(x1, y1, x2, y2, ky, k << 1 | 1, (l + r) / 2, r);
    return gcd2(vl, vr);
}

ll gety(int x1, int y1, int x2, int y2, int k, int l, int r) {
    if (y2 <= l || r <= y1) {
        return 0;
    }
    if (y1 <= l && r <= y2) {
        return getx(x1, y1, x2, y2, k, 1, 0, nx);
    }
    ll vl = gety(x1, y1, x2, y2, k << 1, l, (l + r) / 2);
    ll vr = gety(x1, y1, x2, y2, k << 1 | 1, (l + r) / 2, r);
    return gcd2(vl, vr);
}

void init(int R, int C) {
    ++R;
    ++C;
    nx = 1;
    while (nx < R) {
        nx <<= 1;
    }
    ny = 1;
    while (ny < C) {
        ny <<= 1;
    }
    dat.resize(2 * nx);
    for (int i = 0; i < 2 * nx; i++) {
        dat[i].resize(2 * ny);
    }
}

void update(int P, int Q, long long K) { upd(P, Q, K); }

long long calculate(int P, int Q, int U, int V) {
    return gety(P, Q, U + 1, V + 1, 1, 0, ny);
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:18:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^~~

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