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18 lines
406 B
C++
18 lines
406 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 1e5 + 50;
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typedef long long ll;
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ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b, a % b); }
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int a[N];
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int main()
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{
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int n, x;
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scanf("%d%d", &n, &x);
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for (int i = 0; i < n; i++)
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scanf("%d", a + i), a[i] = abs(a[i] - x);
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int g = *a;
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for (int i = 0; i < n; i++)
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g = gcd(g, a[i]);
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printf("%d", g);
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return 0;
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} |