//jichengqiuhe . 2024.4.11 . liuguancheng .
#include <iostream>

using namespace std;
int main(){
    int n;
    double sum=0,jiecheng=1;
    cout<<"请输入一个正整数:";
    cin>>n;
    if(n<=120){
        for(int i=1;i<=n;i++){
            cout<<"i="<<i<<endl;
            jiecheng=1;
            for(int j=1;j<=i;j++){
                jiecheng=jiecheng*j;
            }
            cout<<"jiecheng="<<jiecheng<<endl;
            sum=jiecheng+sum;
        }
        cout<<"n = "<<n<<" de jie cheng de zong he shi "<<sum<<endl;
    }else{
        cout<<"请输入1~120中的数字。"<<endl;
    }
    return 0;
}