'commit'

C++课程/习题训练/N!问题_1.cpp

@@ -0,0 +1,18 @@
+#include<bits/stdc++.h>
+using namespace std;
+#define MOD 1000000
+int main()
+{
+    int i, j, n, m, S = 0;
+    scanf("%d", &n);
+    for(i = 1; i <= n; i++)
+    {
+        m = 1;
+        for(j = 1; j <= i; j++) m = (m*j) % MOD;
+        S = (S+m) % MOD;
+    }
+    printf("%d\n", S);
+    return 0;
+}
+
+