OI-Codes/sssss...n 的积.cpp
2023-02-25 22:09:40 +08:00

15 lines
157 B
C++

#include <iostream>
using namespace std;
int main(){
int a;
int sum;
cin >>a;
for(sum=1;a>0;a--){
sum*=a;
}
cout <<sum;
return 0;
}