1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
#include<cstring>
#include<iostream>
#include<fstream>
#include<sstream>
#include<cstdlib>
#include<algorithm>
#include<string>
#include<cstdio>
#include<cmath>
#include<ctime>
#include<cstring>
#include<queue>
#include<stack>
#include<set>
#include<vector>
#include<memory>
#include<map>
#include<list>
#include<limits>
#include<deque>
#include<numeric>
#include<hash_map>
#include<bitset>
#include<functional>
using namespace std;
bool isMust[10];
vector<vector<int> > seg(10,vector<int>(10));
int ans=0;
int N;
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX