计算阶乘和Sum= 1!+2!+...+n! 对1000000007求模的结果C++

以下是C++计算阶乘和并对1000000007求模的代码实现：

#include <iostream>
using namespace std;

const int MOD = 1000000007;

int main() {
    int n;
    cin >> n;
    long long sum = 0, m = 1;
    for (int i = 1; i <= n; i++) {
        m = (m * i) % MOD;
        sum = (sum + m) % MOD;
    }
    cout << sum << endl;
    return 0;
}