#include "bits/stdc++.h" using namespace std; using VS = vector; using LL = long long; using VI = vector; using VVI = vector; using PII = pair; using PLL = pair; using VL = vector; using VVL = vector; #define ALL(a) begin((a)),end((a)) #define RALL(a) (a).rbegin(), (a).rend() #define PB push_back #define EB emplace_back #define MP make_pair #define SZ(a) int((a).size()) #define SORT(c) sort(ALL((c))) #define RSORT(c) sort(RALL((c))) #define UNIQ(c) (c).erase(unique(ALL((c))), end((c))) #define FOR(i, s, e) for (int(i) = (s); (i) < (e); (i)++) #define FORR(i, s, e) for (int(i) = (s); (i) > (e); (i)--) #define debug(x) cerr << #x << ": " << x << endl const int INF = 1e9; const LL LINF = 1e16; const LL MOD = 1000000007; const double PI = acos(-1.0); int DX[8] = { 0, 0, 1, -1, 1, 1, -1, -1 }; int DY[8] = { 1, -1, 0, 0, 1, -1, 1, -1 }; /* ----- 2017/11/02 Problem: yukicoder260 / Link: __CONTEST_URL__ ----- */ /* ------問題------ -----問題ここまで----- */ /* -----解説等----- ----解説ここまで---- */ LL N; LL ans = 0LL; LL dp[10004][3][2][8][2]; LL f(string &target, int i, int three = 0, int has = 0, int eight = 0, int less = 0) { if (i == -1) { return (three == 0 || has == 1) && eight != 0; } if (dp[i][three][has][eight][less] != -1 && less == 1)return dp[i][three][has][eight][less]; LL res = 0; int num = target[i] - '0'; int Max = less ? 9 : num; FOR(nx, 0, Max + 1) { res += f(target, i - 1,(three+nx)%3,has||nx==3,(eight*10+nx)%8,less||(nx> A >> B; int i = SZ(A) - 1; while (i >= 0) { if (A[i] == '0') { A[i] = '9'; } else { A[i]--; break; } i--; } if (A[0] == '0')A = A.substr(1); reverse(ALL(A)); reverse(ALL(B)); fill(****dp, ****dp + 10004 * 3 * 2 * 8 * 2, -1); ans = f(B, SZ(B) - 1); ans -= f(A, SZ(A) - 1); cout << ans << "\n"; return 0; }