#include using namespace std; typedef signed long long ll; #define _P(...) (void)printf(__VA_ARGS__) #define FOR(x,to) for(x=0;x<(to);x++) #define FORR(x,arr) for(auto& x:arr) #define FORR2(x,y,arr) for(auto& [x,y]:arr) #define ALL(a) (a.begin()),(a.end()) #define ZERO(a) memset(a,0,sizeof(a)) #define MINUS(a) memset(a,0xff,sizeof(a)) template bool chmax(T &a, const T &b) { if(a bool chmin(T &a, const T &b) { if(a>b){a=b;return 1;}return 0;} //------------------------------------------------------- int N; const ll mo=998244353; const int NUM_=400001; static ll fact[NUM_+1],factr[NUM_+1],inv[NUM_+1]; unordered_set M[21]; int add(int mask,int v) { int i; FOR(i,31) if(mask&(1<>N; M[0].insert((1<<9)-1); FOR(i,N) { int C[6]; FOR(j,6) { cin>>C[j]; C[j]--; } FORR(a,M[i]) { FOR(j,6) M[i+1].insert(add(a,C[j])); } } ll ret=0; FORR(m,M[N]) { ll v=fact[N]; int cur=0; FOR(i,31) { if(m&(1<