start = input()
end = input()
start = (ord(start[0]) - ord('a'), int(start[1]) - 1)
end = (ord(end[0]) - ord('a'), int(end[1]) - 1)
dx = end[0] - start[0]
dy = end[1] - start[1]
print(max(abs(dx), abs(dy)))
while dx or dy:
move = ""
if dx > 0:
dx -= 1
move += "R"
if dx < 0:
dx += 1
move += "L"
if dy > 0:
dy -= 1
move += "U"
if dy < 0:
dy += 1
move += "D"
print(move)#include <bits/stdc++.h>
using namespace std;
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
string s,t;
cin >> s >> t;
cout << max(abs(s[0]-t[0]),abs(s[1]-t[1])) << "\n";
while(s!=t){
if(s[0]<t[0]){
cout << 'R';
s[0]++;
}
else if(s[0]>t[0]){
cout << 'L';
s[0]--;
}
if(s[1]<t[1]){
cout << 'U';
s[1]++;
}
else if(s[1]>t[1]){
cout << 'D';
s[1]--;
}
cout << "\n";
}
return 0;
}80A - Panoramix's Prediction | 1354B - Ternary String |
122B - Lucky Substring | 266B - Queue at the School |
1490A - Dense Array | 1650B - DIV + MOD |
1549B - Gregor and the Pawn Game | 553A - Kyoya and Colored Balls |
1364A - XXXXX | 1499B - Binary Removals |
1569C - Jury Meeting | 108A - Palindromic Times |
46A - Ball Game | 114A - Cifera |
776A - A Serial Killer | 25B - Phone numbers |
1633C - Kill the Monster | 1611A - Make Even |
1030B - Vasya and Cornfield | 1631A - Min Max Swap |
1296B - Food Buying | 133A - HQ9+ |
1650D - Twist the Permutation | 1209A - Paint the Numbers |
1234A - Equalize Prices Again | 1613A - Long Comparison |
1624B - Make AP | 660B - Seating On Bus |
405A - Gravity Flip | 499B - Lecture |