如果是低级错误，望大佬勿喷，本人太弱了，属于做A+B问题都WA的那种

#include <stdio.h>
#include<algorithm>
#include<math.h>
using namespace std;

int main(){
	int n;
	cin >> n;
	int f[n];
	int a[n];
	f[0] = 0;f[1] = 1;f[2] = 2;f[3] = 3;f[4] = 4; f[5] = 5;f[6] = 6;f[7] = 7;f[8] = 8;f[9] = 9;f[9] = 5;f[10] = 10;f[11] = 11;
	if(n > 11){
		for(int i = 1; i <= n; i++){
			a[i] = min(f[i - 1], f[i - 5]);
			f[i] = min(a[i], f[i - 11]);
		}
	}
	cout << f[n];
	
	
	return 0;
}