A62681. 阅读C++程序填写结果#include<bits/stdc++.h>
编程题
知识点
题目描述
阅读C++程序填写结果
#include<bits/stdc++.h>
using namespace std;
int fun2(int num){
if(num <=1)return num;
return fun2(num-1)+ num;
}
int fun(int num){
if(num <=1)return num;
int ans = num -fun(num-1)+fun2(num-2);
return ans;
}
int main(){
int n;
cin >> n;
cout <<fun(n)<< endl;
return 0;
}