Add FZOI Codes

FZOI/取余运算 加强版.cpp

@@ -0,0 +1,20 @@
+#include <bits/stdc++.h>
+#define int long long
+using namespace std;
+
+int m;
+
+int f(int a, int b)
+{
+	if(b == 0) return 1 % m;
+	else if(b % 2 == 1) return (f(a, (b - 1)) * a) % m;
+	return (f(a, b / 2) * f(a, b / 2)) % m;
+}
+
+signed main()
+{
+	int a, b;
+	cin >> a >> b >> m ;
+	cout << a << "^" << b << " mod " << m << "=" << f(a, b) ;
+	return 0;
+}