题解 | #杨辉三角的变形#
杨辉三角的变形
https://www.nowcoder.com/practice/8ef655edf42d4e08b44be4d777edbf43
#include <iostream>
using namespace std;
int main() {
int n[4] = {4,2,3,2};
int num;
cin>>num;
if(num<=2){
cout<<-1;
}else{
int wz = (num-2)%4;
cout<<n[wz];
}
}
// 64 位输出请用 printf("%lld")
