Add FZOI Codes

FZOI/亲密数对.cpp

@@ -0,0 +1,37 @@
+#include <iostream>
+
+using namespace std;
+
+int sumOfDivisors(int n) {
+    int sum = 0;
+    for (int i = 2; i * i <= n; i++) {
+        if (n % i == 0) {
+        	if(i * i != n)
+        	{
+        		sum += i;
+            	sum += n / i;
+        	}
+            else{
+            	sum += i;
+            }
+        }
+    }
+    return sum;
+}
+
+int main() {
+    int N;
+    cin >> N;
+
+    for (int i = 2; i <= N; i++) {
+        for(int j = 2; j <= N; ++ j)
+        {
+        	if(sumOfDivisors(i) == j && sumOfDivisors(j) == i && i != j)
+        	{
+        		cout << i << " " << j << endl ;
+        	}
+        }
+    }
+
+    return 0;
+}