'commit'

TangDou/AcWing/Math/P4549.cpp

@@ -0,0 +1,19 @@
+#include <bits/stdc++.h>
+using namespace std;
+//最大公约数，辗转相除法
+int gcd(int a, int b) {
+    if (b == 0) return a;
+    return gcd(b, a % b);
+}
+
+int main() {
+    int n;
+    scanf("%d", &n);
+    int d = 0, a;
+    for (int i = 1; i <= n; i++) {
+        scanf("%d", &a);
+        d = gcd(d, abs(a));
+    }
+    printf("%d", d);
+    return 0;
+}