#include "bits/extc++.h"
using namespace std;
template <typename T>
void dbgh(const T& t) {
cerr << t << endl;
}
template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
cerr << t << " | ";
dbgh(u...);
}
#ifdef DEBUG
#define dbg(...) \
cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]: "; \
dbgh(__VA_ARGS__);
#else
#define dbg(...)
#define cerr \
if (false) \
cerr
#endif
#define endl "\n"
#define long long long
#define sz(x) int((x).size())
const int maxn = 105;
long arr[maxn][maxn];
extern "C" void init(int, int) {}
extern "C" void update(int x, int y, long v) {
arr[x][y] = v;
}
extern "C" long calculate(int x1, int y1, int x2, int y2) {
long ans = 0;
for (int i = x1; i <= x2; i++) {
for (int j = y1; j <= y2; j++) {
ans = gcd(ans, arr[i][j]);
}
}
return ans;
}
