Problem: You are given two positive integers a and b. There are two possible operations: 

  1. multiply one of the numbers by some prime p; 
  2. divide one of the numbers on its prime factor p. 



What is the minimum number of operations required to obtain two integers having the same number of divisors? You are given several such pairs, you need to find the answer for each of them.

Input

The first line contains a single integer t (1 ≤ t ≤ 10^5) — the number of pairs of integers for which you are to find the answer.

Each of the next t lines contain two integers a_i and b_i (1 ≤ a_i, b_i ≤ 10^6).

Output

Output t lines — the i-th of them should contain the answer for the pair a_i, b_i.

Example

Input

8
9 10
100 17
220 70
17 19
4 18
32 20
100 32
224 385


Output

1
3
1
0
1
0
1
1

Note

These are the numbers with equal number of divisors, which are optimal to obtain in the sample test case: 

  * (27, 10), 4 divisors 
  * (100, 1156), 9 divisors 
  * (220, 140), 12 divisors 
  * (17, 19), 2 divisors 
  * (12, 18), 6 divisors 
  * (50, 32), 6 divisors 
  * (224, 1925), 12 divisors 



Note that there can be several optimal pairs of numbers.

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
template <typename T, typename U>
std::istream& operator>>(std::istream& i, pair<T, U>& p) {
  i >> p.first >> p.second;
  return i;
}
template <typename T>
std::istream& operator>>(std::istream& i, vector<T>& t) {
  for (auto& v : t) {
    i >> v;
  }
  return i;
}
template <typename T, typename U>
std::ostream& operator<<(std::ostream& o, const pair<T, U>& p) {
  o << p.first << ' ' << p.second;
  return o;
}
template <typename T>
std::ostream& operator<<(std::ostream& o, const vector<T>& t) {
  if (t.empty()) o << '\n';
  for (size_t i = 0; i < t.size(); ++i) {
    o << t[i] << " \n"[i == t.size() - 1];
  }
  return o;
}
template <typename T>
using minheap = priority_queue<T, vector<T>, greater<T>>;
template <typename T>
using maxheap = priority_queue<T, vector<T>, less<T>>;
template <typename T>
bool in(T a, T b, T c) {
  return a <= b && b < c;
}
unsigned int logceil(int first) {
  return first ? 8 * sizeof(int) - __builtin_clz(first) : 0;
}
namespace std {
template <typename T, typename U>
struct hash<pair<T, U>> {
  hash<T> t;
  hash<U> u;
  size_t operator()(const pair<T, U>& p) const {
    return t(p.first) ^ (u(p.second) << 7);
  }
};
}  // namespace std
template <typename T, typename F>
T bsh(T l, T h, const F& f) {
  T r = -1, m;
  while (l <= h) {
    m = (l + h) / 2;
    if (f(m)) {
      l = m + 1;
      r = m;
    } else {
      h = m - 1;
    }
  }
  return r;
}
template <typename F>
double bshd(double l, double h, const F& f, double p = 1e-9) {
  unsigned int r = 3 + (unsigned int)log2((h - l) / p);
  while (r--) {
    double m = (l + h) / 2;
    if (f(m)) {
      l = m;
    } else {
      h = m;
    }
  }
  return (l + h) / 2;
}
template <typename T, typename F>
T bsl(T l, T h, const F& f) {
  T r = -1, m;
  while (l <= h) {
    m = (l + h) / 2;
    if (f(m)) {
      h = m - 1;
      r = m;
    } else {
      l = m + 1;
    }
  }
  return r;
}
template <typename F>
double bsld(double l, double h, const F& f, double p = 1e-9) {
  unsigned int r = 3 + (unsigned int)log2((h - l) / p);
  while (r--) {
    double m = (l + h) / 2;
    if (f(m)) {
      h = m;
    } else {
      l = m;
    }
  }
  return (l + h) / 2;
}
template <typename T>
T gcd(T a, T b) {
  if (a < b) swap(a, b);
  return b ? gcd(b, a % b) : a;
}
template <typename T>
class vector2 : public vector<vector<T>> {
 public:
  vector2() {}
  vector2(size_t a, size_t b, T t = T())
      : vector<vector<T>>(a, vector<T>(b, t)) {}
};
template <typename T>
class vector3 : public vector<vector2<T>> {
 public:
  vector3() {}
  vector3(size_t a, size_t b, size_t c, T t = T())
      : vector<vector2<T>>(a, vector2<T>(b, c, t)) {}
};
template <typename T>
class vector4 : public vector<vector3<T>> {
 public:
  vector4() {}
  vector4(size_t a, size_t b, size_t c, size_t d, T t = T())
      : vector<vector3<T>>(a, vector3<T>(b, c, d, t)) {}
};
template <typename T>
class vector5 : public vector<vector4<T>> {
 public:
  vector5() {}
  vector5(size_t a, size_t b, size_t c, size_t d, size_t e, T t = T())
      : vector<vector4<T>>(a, vector4<T>(b, c, d, e, t)) {}
};
class TaskD {
 public:
  vector<int> P;
  void fact(int a, vector<int>& f) {
    while (a != 1) {
      int b = P[a], c = 0;
      while (P[a] == b) {
        c++;
        a /= b;
      }
      f.push_back(c + 1);
    }
    sort(f.begin(), f.end());
    reverse(f.begin(), f.end());
  }
  void solve(istream& cin, ostream& cout) {
    P.assign(1e6 + 5, 0);
    for (int i = 2; i < 1e6 + 3; ++i) {
      if (P[i] == 0) {
        for (int j = i; j < 1e6 + 3; j += i) P[j] = i;
      }
    }
    map<vector<int>, int> IDX{{{}, 0},
                              {{2}, 1},
                              {{2, 2}, 2},
                              {{2, 2, 2}, 3},
                              {{2, 2, 2, 2}, 4},
                              {{2, 2, 2, 2, 2}, 5},
                              {{2, 2, 2, 2, 2, 2}, 6},
                              {{2, 2, 2, 2, 2, 2, 2}, 7},
                              {{3}, 8},
                              {{3, 2}, 9},
                              {{3, 2, 2}, 10},
                              {{3, 2, 2, 2}, 11},
                              {{3, 2, 2, 2, 2}, 12},
                              {{3, 2, 2, 2, 2, 2}, 13},
                              {{3, 3}, 14},
                              {{3, 3, 2}, 15},
                              {{3, 3, 2, 2}, 16},
                              {{3, 3, 2, 2, 2}, 17},
                              {{3, 3, 2, 2, 2, 2}, 18},
                              {{3, 3, 3}, 19},
                              {{3, 3, 3, 2}, 20},
                              {{3, 3, 3, 2, 2}, 21},
                              {{3, 3, 3, 2, 2, 2}, 22},
                              {{3, 3, 3, 3}, 23},
                              {{3, 3, 3, 3, 2}, 24},
                              {{4}, 25},
                              {{4, 2}, 26},
                              {{4, 2, 2}, 27},
                              {{4, 2, 2, 2}, 28},
                              {{4, 2, 2, 2, 2}, 29},
                              {{4, 2, 2, 2, 2, 2}, 30},
                              {{4, 3}, 31},
                              {{4, 3, 2}, 32},
                              {{4, 3, 2, 2}, 33},
                              {{4, 3, 2, 2, 2}, 34},
                              {{4, 3, 2, 2, 2, 2}, 35},
                              {{4, 3, 3}, 36},
                              {{4, 3, 3, 2}, 37},
                              {{4, 3, 3, 2, 2}, 38},
                              {{4, 3, 3, 3}, 39},
                              {{4, 3, 3, 3, 2}, 40},
                              {{4, 4}, 41},
                              {{4, 4, 2}, 42},
                              {{4, 4, 2, 2}, 43},
                              {{4, 4, 2, 2, 2}, 44},
                              {{4, 4, 3}, 45},
                              {{4, 4, 3, 2}, 46},
                              {{4, 4, 3, 2, 2}, 47},
                              {{4, 4, 3, 3}, 48},
                              {{4, 4, 4}, 49},
                              {{4, 4, 4, 2}, 50},
                              {{5}, 51},
                              {{5, 2}, 52},
                              {{5, 2, 2}, 53},
                              {{5, 2, 2, 2}, 54},
                              {{5, 2, 2, 2, 2}, 55},
                              {{5, 2, 2, 2, 2, 2}, 56},
                              {{5, 3}, 57},
                              {{5, 3, 2}, 58},
                              {{5, 3, 2, 2}, 59},
                              {{5, 3, 2, 2, 2}, 60},
                              {{5, 3, 2, 2, 2, 2}, 61},
                              {{5, 3, 3}, 62},
                              {{5, 3, 3, 2}, 63},
                              {{5, 3, 3, 2, 2}, 64},
                              {{5, 3, 3, 3}, 65},
                              {{5, 4}, 66},
                              {{5, 4, 2}, 67},
                              {{5, 4, 2, 2}, 68},
                              {{5, 4, 2, 2, 2}, 69},
                              {{5, 4, 3}, 70},
                              {{5, 4, 3, 2}, 71},
                              {{5, 4, 3, 2, 2}, 72},
                              {{5, 4, 3, 3}, 73},
                              {{5, 4, 4}, 74},
                              {{5, 4, 4, 2}, 75},
                              {{5, 5}, 76},
                              {{5, 5, 2}, 77},
                              {{5, 5, 2, 2}, 78},
                              {{5, 5, 2, 2, 2}, 79},
                              {{5, 5, 3}, 80},
                              {{5, 5, 3, 2}, 81},
                              {{5, 5, 4}, 82},
                              {{5, 5, 5}, 83},
                              {{6}, 84},
                              {{6, 2}, 85},
                              {{6, 2, 2}, 86},
                              {{6, 2, 2, 2}, 87},
                              {{6, 2, 2, 2, 2}, 88},
                              {{6, 2, 2, 2, 2, 2}, 89},
                              {{6, 3}, 90},
                              {{6, 3, 2}, 91},
                              {{6, 3, 2, 2}, 92},
                              {{6, 3, 2, 2, 2}, 93},
                              {{6, 3, 3}, 94},
                              {{6, 3, 3, 2}, 95},
                              {{6, 3, 3, 2, 2}, 96},
                              {{6, 3, 3, 3}, 97},
                              {{6, 4}, 98},
                              {{6, 4, 2}, 99},
                              {{6, 4, 2, 2}, 100},
                              {{6, 4, 2, 2, 2}, 101},
                              {{6, 4, 3}, 102},
                              {{6, 4, 3, 2}, 103},
                              {{6, 4, 4}, 104},
                              {{6, 4, 4, 2}, 105},
                              {{6, 5}, 106},
                              {{6, 5, 2}, 107},
                              {{6, 5, 2, 2}, 108},
                              {{6, 5, 2, 2, 2}, 109},
                              {{6, 5, 3}, 110},
                              {{6, 5, 3, 2}, 111},
                              {{6, 5, 4}, 112},
                              {{6, 6}, 113},
                              {{6, 6, 2}, 114},
                              {{6, 6, 2, 2}, 115},
                              {{6, 6, 3}, 116},
                              {{6, 6, 4}, 117},
                              {{7}, 118},
                              {{7, 2}, 119},
                              {{7, 2, 2}, 120},
                              {{7, 2, 2, 2}, 121},
                              {{7, 2, 2, 2, 2}, 122},
                              {{7, 2, 2, 2, 2, 2}, 123},
                              {{7, 3}, 124},
                              {{7, 3, 2}, 125},
                              {{7, 3, 2, 2}, 126},
                              {{7, 3, 2, 2, 2}, 127},
                              {{7, 3, 3}, 128},
                              {{7, 3, 3, 2}, 129},
                              {{7, 3, 3, 3}, 130},
                              {{7, 4}, 131},
                              {{7, 4, 2}, 132},
                              {{7, 4, 2, 2}, 133},
                              {{7, 4, 2, 2, 2}, 134},
                              {{7, 4, 3}, 135},
                              {{7, 4, 3, 2}, 136},
                              {{7, 4, 4}, 137},
                              {{7, 5}, 138},
                              {{7, 5, 2}, 139},
                              {{7, 5, 2, 2}, 140},
                              {{7, 5, 3}, 141},
                              {{7, 5, 3, 2}, 142},
                              {{7, 5, 4}, 143},
                              {{7, 6}, 144},
                              {{7, 6, 2}, 145},
                              {{7, 6, 2, 2}, 146},
                              {{7, 6, 3}, 147},
                              {{7, 7}, 148},
                              {{7, 7, 2}, 149},
                              {{8}, 150},
                              {{8, 2}, 151},
                              {{8, 2, 2}, 152},
                              {{8, 2, 2, 2}, 153},
                              {{8, 2, 2, 2, 2}, 154},
                              {{8, 3}, 155},
                              {{8, 3, 2}, 156},
                              {{8, 3, 2, 2}, 157},
                              {{8, 3, 2, 2, 2}, 158},
                              {{8, 3, 3}, 159},
                              {{8, 3, 3, 2}, 160},
                              {{8, 4}, 161},
                              {{8, 4, 2}, 162},
                              {{8, 4, 2, 2}, 163},
                              {{8, 4, 3}, 164},
                              {{8, 4, 3, 2}, 165},
                              {{8, 4, 4}, 166},
                              {{8, 5}, 167},
                              {{8, 5, 2}, 168},
                              {{8, 5, 2, 2}, 169},
                              {{8, 5, 3}, 170},
                              {{8, 6}, 171},
                              {{8, 6, 2}, 172},
                              {{8, 6, 3}, 173},
                              {{8, 7}, 174},
                              {{8, 7, 2}, 175},
                              {{8, 8}, 176},
                              {{9}, 177},
                              {{9, 2}, 178},
                              {{9, 2, 2}, 179},
                              {{9, 2, 2, 2}, 180},
                              {{9, 2, 2, 2, 2}, 181},
                              {{9, 3}, 182},
                              {{9, 3, 2}, 183},
                              {{9, 3, 2, 2}, 184},
                              {{9, 3, 2, 2, 2}, 185},
                              {{9, 3, 3}, 186},
                              {{9, 3, 3, 2}, 187},
                              {{9, 4}, 188},
                              {{9, 4, 2}, 189},
                              {{9, 4, 2, 2}, 190},
                              {{9, 4, 3}, 191},
                              {{9, 4, 4}, 192},
                              {{9, 5}, 193},
                              {{9, 5, 2}, 194},
                              {{9, 5, 2, 2}, 195},
                              {{9, 5, 3}, 196},
                              {{9, 6}, 197},
                              {{9, 6, 2}, 198},
                              {{9, 7}, 199},
                              {{9, 7, 2}, 200},
                              {{9, 8}, 201},
                              {{10}, 202},
                              {{10, 2}, 203},
                              {{10, 2, 2}, 204},
                              {{10, 2, 2, 2}, 205},
                              {{10, 2, 2, 2, 2}, 206},
                              {{10, 3}, 207},
                              {{10, 3, 2}, 208},
                              {{10, 3, 2, 2}, 209},
                              {{10, 3, 3}, 210},
                              {{10, 3, 3, 2}, 211},
                              {{10, 4}, 212},
                              {{10, 4, 2}, 213},
                              {{10, 4, 2, 2}, 214},
                              {{10, 4, 3}, 215},
                              {{10, 5}, 216},
                              {{10, 5, 2}, 217},
                              {{10, 6}, 218},
                              {{10, 6, 2}, 219},
                              {{10, 7}, 220},
                              {{11}, 221},
                              {{11, 2}, 222},
                              {{11, 2, 2}, 223},
                              {{11, 2, 2, 2}, 224},
                              {{11, 3}, 225},
                              {{11, 3, 2}, 226},
                              {{11, 3, 2, 2}, 227},
                              {{11, 3, 3}, 228},
                              {{11, 4}, 229},
                              {{11, 4, 2}, 230},
                              {{11, 4, 2, 2}, 231},
                              {{11, 4, 3}, 232},
                              {{11, 5}, 233},
                              {{11, 5, 2}, 234},
                              {{11, 6}, 235},
                              {{11, 7}, 236},
                              {{12}, 237},
                              {{12, 2}, 238},
                              {{12, 2, 2}, 239},
                              {{12, 2, 2, 2}, 240},
                              {{12, 3}, 241},
                              {{12, 3, 2}, 242},
                              {{12, 3, 2, 2}, 243},
                              {{12, 3, 3}, 244},
                              {{12, 4}, 245},
                              {{12, 4, 2}, 246},
                              {{12, 5}, 247},
                              {{12, 5, 2}, 248},
                              {{12, 6}, 249},
                              {{13}, 250},
                              {{13, 2}, 251},
                              {{13, 2, 2}, 252},
                              {{13, 2, 2, 2}, 253},
                              {{13, 3}, 254},
                              {{13, 3, 2}, 255},
                              {{13, 3, 3}, 256},
                              {{13, 4}, 257},
                              {{13, 4, 2}, 258},
                              {{13, 5}, 259},
                              {{13, 6}, 260},
                              {{14}, 261},
                              {{14, 2}, 262},
                              {{14, 2, 2}, 263},
                              {{14, 2, 2, 2}, 264},
                              {{14, 3}, 265},
                              {{14, 3, 2}, 266},
                              {{14, 4}, 267},
                              {{14, 5}, 268},
                              {{15}, 269},
                              {{15, 2}, 270},
                              {{15, 2, 2}, 271},
                              {{15, 3}, 272},
                              {{15, 3, 2}, 273},
                              {{15, 4}, 274},
                              {{16}, 275},
                              {{16, 2}, 276},
                              {{16, 2, 2}, 277},
                              {{16, 3}, 278},
                              {{16, 4}, 279},
                              {{17}, 280},
                              {{17, 2}, 281},
                              {{17, 2, 2}, 282},
                              {{17, 3}, 283},
                              {{18}, 284},
                              {{18, 2}, 285},
                              {{19}, 286},
                              {{19, 2}, 287},
                              {{20}, 288}};
    vector<string> DIST{
        "0",
        "10",
        "210",
        "3210",
        "43210",
        "543210",
        "6543210",
        "76543210",
        "211234560",
        "3211234510",
        "43211234210",
        "543211233210",
        "6543211243210",
        "76543211543210",
        "432223452112340",
        "5432223432112310",
        "65432223432112210",
        "765432225432113210",
        "8765432265432143210",
        "65433334432223211230",
        "765433335432223211210",
        "8765433365432243211210",
        "98765433765432543213210",
        "876544446543334322221120",
        "9876544476543354322321110",
        "21012345112345234564567670",
        "321012342112342234534565610",
        "4321012332112322234334545210",
        "54321012432112322233334443210",
        "654321015432114322233334443210",
        "7654321065432154322433344543210",
        "43211234210123112342345452112340",
        "543211233210122112322343432112310",
        "6543211243210132112222333432112210",
        "76543211543210432113222335432113210",
        "876543216543215432143223365432143210",
        "6543222343211221012112323432223211230",
        "76543222543211321012112225432223211210",
        "876543226543214321032112265432243211210",
        "8765433365432243211210111654333432222110",
        "98765433765432543213210217654335432232110",
        "432101233211232223433454521012311234234450",
        "5432101243211232223333444321012211232233410",
        "65432101543211432223333444321013211222233210",
        "765432106543215432243334454321043211322333210",
        "6543211243210132112222333432112210121122321120",
        "76543211543210432113222335432113210121122321110",
        "876543216543215432143223365432143210321224321210",
        "8765432265432143210321122654322432112101143222110",
        "65432101543211432223333444321013211222233210111220",
        "765432106543215432243334454321043211322333210211210",
        "3212345621234523456456767123456234564566734564566560",
        "43212345321234223453456562123451234534556234534554510",
        "543212344321233223433454532123421234234451234234434210",
        "6543212354321243223333444432123321232233421231233233210",
        "76543212654321543224333445432124321232233321221221243210",
        "876543217654326543254334465432154321432334321321221543210",
        "5432234532123421234234545322345123452344523453454452112340",
        "65432234432123321232234344322342123412334223423433432112310",
        "765432235432124321232233354322332123212233223123223432112210",
        "8765432265432154321432233654322432123212243222121225432113210",
        "98765432765432654325432437654325432143232543232123265432143210",
        "765433345432233212321232354333432234123233334234334432223211230",
        "8765433365432243212321222654333432232121243332232335432223211210",
        "98765433765432543214321327654335432232121543332213365432243211210",
        "987654447654335432232122176544454333322125444333244654333432222110",
        "5432123443212332234334545321234212342344512342344342101231123423440",
        "65432123543212432233334444321233212322334212312332332101221123223310",
        "765432126543215432243334454321243212322333212212212432101321122223210",
        "876543217654326543254334465432154321432334321321221543210432113223321"
        "0",
        "7654322354321243212322333543223321232122332231232234321122101211222112"
        "0",
        "8765432265432154321432233654322432123212243222121225432113210121123211"
        "10",
        "9876543276543265432543243765432543214323254323212326543214321032124321"
        "210",
        "9876543376543254321432132765433543223212154333221336543224321121014322"
        "2110",
        "7654321265432154322433344543212432123223332122122124321013211222232101"
        "11220",
        "8765432176543265432543344654321543214323343213212215432104321132233210"
        "211210",
        "6543234554323443234334545432345323452344523453454453212342123423441234"
        "2344340",
        "7654323465432354323433444543234432343233432342343344321233212322332123"
        "12332310",
        "8765432376543265432543344654323543234323343233232235432124321232233212"
        "212212210",
        "9876543287654376543654354765432654325434354324323326543215432143234321"
        "3212213210",
        "8765433465432354323432333654334432343232343342343345432233212321223223"
        "12322321120",
        "9876543376543265432543243765433543234323254333232336543224321232124322"
        "212122321110",
        "8765432376543265432543344654323543234323343233232235432124321232233212"
        "2122122101110",
        "9876543487654376543654354765434654345434354344343346543235432343234323"
        "32322332122110",
        "3212345610123412345345656212345123453455623453455451234562345645663456"
        "456656456756670",
        "4321234521012311234234545211234012342344512342344342123451234534552345"
        "3455453456455610",
        "5432123432101221123223434321123101231233421231233233212342123423441234"
        "23443423453445210",
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        "8765433465432343234334545654334432342344543342344345433453223412333334"
        "2343343345344543223421232344223423342234233123333211231012123112312212"
        "3233012212432232123232232332343123122432343234342343412332322343345223"
        "23334323232543433433454343243232344232323223123233221120",
        "9876543376543254323433444765433543233233454333233336543344322321224333"
        "2232334334233454322332122233322312233223122212224321122101112211201121"
        "2122101121543223212223221223232212112543234323233232321223221254334322"
        "124332322226543433243433321543232333222143222122221321110",
        "8765432365432354334444555654323432343344543232344235432343212322333223"
        "1233233234233443212332233344212323232123232223333210122112223101212121"
        "2232122312432123223332122322232123011543233234343233323332312243234212"
        "2332322312154343233334323224323334423122321222312232101110",
        "9876543476543365434544555765434543344344554343344346543234323432334323"
        "2343233234122354323443233344323423342123232323334321233212223212312210"
        "1121212222543234323333232332122223122654344334344343432332312254323323"
        "23323323120654343434344342154334344332324323323231232122110",
        "5432123443223423345445656321234123453455612343455342123450123423441234"
        "2344342345344532334512343455234534451234343234442123452345456234545423"
        "4454345545212342345452344543453344343323452345453454523443445432345123"
        "342343342334345234434543434343434553423323454564534123434340",
        "6543212354322332334344555432123212342344521232344233212341012312332123"
        "1233231234233443223421232344123423340123232123333212342234345123434312"
        "3343234434321232234341233432342233232322341234342343412332334321234012"
        "2312322312232341233234323234323234423122323434534232123232310",
        "7654321265432243233334445543212321232233432121233124321232101211222112"
        "0122122123122354322332122233212312231012121212224321233223334212323221"
        "2232323323432123223332122323231222121432232123233232321221223232123101"
        "12212112011432321222232121243322233120114323334231232122212210",
        "7654322354321243223233444543223321231233432231233234322342112301223223"
        "1232232234233443212332231233212323231123122223234322342123234223423322"
        "3233123323432232123232232331232123232433332234231233301221223332234112"
        "122232121224323223223432323321222331212243232342323322312232110",
        "8765432265432154322323334654322432122122343222122225432233211210113222"
        "1121223223122354321243222122321212122112011322125432233212223322312232"
        "2122212232543223212223221222121212222543323223122122210112132243223211"
        "0132212111254323221323222224321322221112543232332224322212232110",
        "7654321265432243233334445543212321232233432121233124321232101211222112"
        "0122122123122354323332122233212312231012121212224321233223334212323221"
        "2232223323432123223332122322231232121432232123232232312221223232123101"
        "12212112011432321222232121243232233120114323334231232122212210110",
        "4321012332112322234334545210123112342344501232344233212341234534551234"
        "3455342345454532223423344455223434342345454344542123452345456234545434"
        "5565345545101231234341233432344234342212342345452344434553445332345234"
        "453454453444334345534554545432333442334434344453445234545451233430",
        "5432101243211232223333444321012211232233410121233124321232123423442123"
        "2344232234343443212332233344212323231234343233433212342234345123434323"
        "4454234434210121123230122321233123231321232234341233323442334232234123"
        "3423433423343232344234434343212223312233432333423343234343421223210",
        "6543210154321143222333344432101321122223321011122015432123212322333212"
        "1233123223232354321243223334321222122123232322324321233223334212323232"
        "3343323323321012112221011212122212120432123223332122232332223143223212"
        "23323223122543232333233232343213223211225432434322343233323321221210",
        "6543211243210132112222333432112210121122321120122124321233212312332123"
        "1233233234233432101221122233101212122123232222324321232123234212323222"
        "3343123323321121012121121221232012121432222123232222212331223243223223"
        "232233232333212223312332333210111220112232122231223432323233221222110",
        "6543210154321143222333344432101321122223321011122015432123212322333212"
        "1233123223232343212232233344212223222123232323334321233223334212323232"
        "3343233423321012112221011212122123120432123223332122222332323143212212"
        "232122221224322323322332323321222331212243233342323432333233212212101"
        "0",
        "5432123443223421234234545321234223452344512343454344323452345634552345"
        "4565453456565632334512343455234534453456455234443234562345456345645545"
        "6566345545212342345342344543455344453212342345452344434553445332345345"
        "5634554545543453455456556454334234434453444534545543456455623445412333"
        "0",
        "6543212354322332123223434432123322341233421232343235432343234523443234"
        "3454343345454543223421232344323423342345344123334323453234345234534434"
        "5455234434321232234231233432344233342321232234341233323442334243234234"
        "4523443434443342344345445343223123323342433423434434345344532334321222"
        "10",
        "7654321265432243212322333543212432232122332122232126543234323432334323"
        "2343234334343454322332122233322312233234233212225432344323234323423343"
        "4344323333432123223122122323233322231432123223232122232333223154323323"
        "3432333323354333233434334234322212232231543332343325434433443233232121"
        "210",
        "7654322354321243223212323543223321232232332231233235432344323423433234"
        "2344344345344543212332231233212323233234343223235432343234234323434333"
        "4454234334432232123232232332343123232432232123232232323431223254334323"
        "3433433423343233343234434343212223212232432333323335434343443323332212"
        "2110",
        "5432234532123410123123434432345212341233422342343343223451234523442345"
        "3454453456455621234501232344123423342345344123333234561234345234534434"
        "5455234434212342345232343443454343453101231234341233323442334221234234"
        "4523443434432342344345445343234123323342434523434434456344534444423444"
        "12330",
        "6543223443212321012112323432234211230122332231232234322342123412333234"
        "2343342345344532123410121233212312231234233012224323452123234223423323"
        "4344123323321232234121232332343232342210121123230122212331223132123223"
        "3412332323332231233234334232123012212231323412323324345233443333332333"
        "212210",
        "6543345643234521234234545432345323452344523453454453212342234534551234"
        "3455342345454532234512343455234534453345454234444334562345456345645534"
        "5565345545323453456343454552344344454212342345452344434553445321234234"
        "4523443434432343455345545454345234434343545634545445445344544344334454"
        "2344120",
        "7654334554323432123223434543234322341233432342343344321233223423442123"
        "2344233234343443223421232344323423342234343123335433453234345334534423"
        "4454234434432343345232343441233233343321232234341233323442334232123223"
        "3412332323343232344234434343234123323232434523434334334233443233243343"
        "32332110",
        "6543456743234532345345656321234223453455612343455342101231123423440123"
        "2344231234343432123422343455123434342234343334443223451234345234534423"
        "4454234434323452345452344541233234344212342345452344423443434310123123"
        "3412332323321232344234434343234345534233434534545344334233443233244343"
        "344523120"};
    int T;
    cin >> T;
    for (int t = 0; t < T; ++t) {
      int a, b;
      cin >> a >> b;
      vector<int> F, G;
      fact(a, F);
      fact(b, G);
      int i = IDX[F], j = IDX[G];
      if (i < j) swap(i, j);
      cout << (DIST[i][j] - '0') << '\n';
    }
  }
};
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  cout.tie(nullptr);
  TaskD solver;
  std::istream& in(std::cin);
  std::ostream& out(std::cout);
  solver.solve(in, out);
  return 0;
}