题解 | 阶乘

#include<iostream>
using namespace std;

//计算阶乘
int ans(int n){
	int temp = 1;
	for(int i = 1;i<=n;i++){
		temp*=i;
	}
	return temp;
}

/*
 *阶乘
 * */
int main(){
	int n;
	while(cin>>n){
		int y1 = 0,y2 = 0;
		for(int i = 1;i<=n;i++){
			if(i%2==0){
				y1 += ans(i);
			}else{
				y2 += ans(i);
			}
		}
		cout<<y2<<" "<<y1<<endl;		
	}
}