# include "bits/stdc++.h" using namespace std; using LL = long long; using ULL = unsigned long long; const double PI = acos(-1); templateconstexpr T INF() { return ::std::numeric_limits::max(); } templateconstexpr T HINF() { return INF() / 2; } template T_char TL(T_char cX) { return tolower(cX); }; template T_char TU(T_char cX) { return toupper(cX); }; const int vy[] = { -1, -1, -1, 0, 1, 1, 1, 0 }, vx[] = { -1, 0, 1, 1, 1, 0, -1, -1 }; const int dx[4] = { -1,0,1,0 }, dy[4] = { 0,-1,0,1 }; int popcnt(unsigned long long n) { int cnt = 0; for (int i = 0; i < 64; i++)if ((n >> i) & 1)cnt++; return cnt; } int d_sum(LL n) { int ret = 0; while (n > 0) { ret += n % 10; n /= 10; }return ret; } int d_cnt(LL n) { int ret = 0; while (n > 0) { ret++; n /= 10; }return ret; } LL gcd(LL a, LL b) { if (b == 0)return a; return gcd(b, a%b); }; LL lcm(LL a, LL b) { LL g = gcd(a, b); return a / g*b; }; # define ALL(qpqpq) (qpqpq).begin(),(qpqpq).end() # define UNIQUE(wpwpw) (wpwpw).erase(unique(ALL((wpwpw))),(wpwpw).end()) # define LOWER(epepe) transform(ALL((epepe)),(epepe).begin(),TL) # define UPPER(rprpr) transform(ALL((rprpr)),(rprpr).begin(),TU) # define FOR(i,tptpt,ypypy) for(LL i=(tptpt);i<(ypypy);i++) # define REP(i,upupu) FOR(i,0,upupu) # define INIT std::ios::sync_with_stdio(false);std::cin.tie(0) # pragma warning(disable:4996) string a, b; LL calc(string s) { LL ret = 0; for (int i = 0; i < s.size() - 2;i++) { if (!i) { if (stoll(s.substr(0, 2)) >= 12) { ret += pow(10, s.size() - 2); } else { if (stoll(s.substr(i, 2)) >= 12) { ret += stoll(s.substr(0, i))*pow(10, s.size() - i - 3); } else { ret += (stoll(s.substr(0, i))-1)*pow(10, s.size() - i - 3); } } } } cout << 1 << endl; for (int i = 1; i <= s.size(); i++) { if (i <= 2)ret++; else if (i <= s.size() - 2)ret += pow(10, s.size() - 2); else { if (s[0] == '1')break; if (s[s.size() - 1] == '1' || s[s.size() - 1] == '2')ret--; ret += stoll(s.substr(1, s.size() - 2)); } } return ret; } LL calc2(string s) { return (s[0] == '2'&&s[s.size() - 1] == '2'); } int main() { REP(i, 100) { cout << i << ":" << calc(to_string(i)) << endl; } cin >> a >> b; cout << calc(b) - calc(to_string(stoi(a)-1)) - calc2(a) << endl; }