#include "game.h"
#include <bits/stdc++.h>
using namespace std;
vector<long long> tree[2005];
int n, m;
long long nzd(long long a, long long b) {
if (b==0) return a;
return nzd(b, a%b);
}
void updateST(int k, int left, int right, int red, int kol, long long br) {
if (left==right) {
if (left==kol)
tree[red][k]=br;
return;
}
if (left>right||right<kol||left>kol)
return;
int mid=(left+right)/2;
updateST(2*k, left, mid, red, kol, br);
updateST(2*k+1, mid+1, right, red, kol, br);
tree[red][k]=nzd(tree[red][2*k], tree[red][2*k+1]);
}
long long queryST(int k, int left, int right, int red, int l, int r) {
if (left>right||left>r||l>right)
return 0;
if (l<=left&&right<=r)
return tree[red][k];
int mid=(left+right)/2;
long long r1=queryST(2*k, left, mid, red, l, r);
long long r2=queryST(2*k+1, mid+1, right, red, l, r);
return nzd(r1, r2);
}
void init(int r, int c) {
for (int i=0;i<=r;i++)
tree[i].assign(4*c, 0);
n=r, m=c;
}
void update(int r, int c, long long br) {
updateST(1, 0, m-1, r, c, br);
}
long long calculate(int x1, int y1, int x2, int y2) {
long long rez=0;
for (int i=x1;i<=x2;i++)
rez=nzd(rez, queryST(1, 0, m-1, i, y1, y2));
return rez;
}
