#include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define REP(i,a,b) for(int i=a;i<(int)b;i++) #define rep(i,n) REP(i,0,n) #define all(c) (c).begin(), (c).end() #define zero(a) memset(a, 0, sizeof a) #define minus(a) memset(a, -1, sizeof a) #define minimize(a, x) a = std::min(a, x) #define maximize(a, x) a = std::max(a, x) typedef long long ll; int const inf = 1<<29; int P; int nA, nB; int const MOD = 1e9+7; ll dp[10010][2][24][2]; int ssize; string S; bool isA; int func(int index = 0, bool giri = true, int mod24 = 0, bool used3 = false) { if(index >= ssize) { if(giri && isA) { return 0; } return ((mod24 % 3 == 0) || used3) && (mod24 % 8); } auto& ret = dp[index][giri][mod24][used3]; if(ret + 1) { return ret; } ret = 0; int digit = S[index] - '0'; int mx = giri ? digit + 1 : 10; rep(i, mx) { ret += func(index + 1, giri && (i == digit), (mod24 * 10 + i) % 24, used3 || (i == 3)); if(ret >= MOD) ret -= MOD; } return ret; } int main() { string A, B; cin >> A >> B; S = B; ssize = S.size(); isA = false; minus(dp); int ans = func(); S = A; ssize = S.size(); isA = true; minus(dp); ans -= func(); ans += MOD; if(ans >= MOD) ans -= MOD; cout << ans << endl; }