正解是个搜。
by w23c3c3 @ 2021-09-20 22:53:12
@[w23c3c3](/user/109942) 这是我们学校的比赛题，23:00截止，花了接近一天才算出来。
by qwq___qaq @ 2021-09-20 22:56:38
```cpp
#include<cstdio>
#include <iostream>
using namespace std;
long long a[] = {1,2,4,6,12,24,36,48,60,120,180,240,360,720,840,1260,1680,2520,5040,7560,10080,15120,20160,25200,27720,45360,50400,55440,83160,110880,166320,221760,277200,332640,498960,554400,665280,720720,1081080,1441440,2162160,2882880,3603600,4324320,6486480,7207200,8648640,10810800,14414400,17297280,21621600,32432400,36756720,43243200,61261200,73513440,110270160,122522400,147026880,183783600,245044800,294053760,367567200,551350800,698377680,735134400,1102701600,1396755360};
int n;
int main()
{
cin >> n;
int i = 0;
while(a[i] < n)
i++;
cout << a[i - 1] << endl;
return 0;
}
```
_万能的打表_
by gshgsh @ 2021-11-27 21:36:57