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;
}1635B - Avoid Local Maximums | 20A - BerOS file system |
1637A - Sorting Parts | 509A - Maximum in Table |
1647C - Madoka and Childish Pranks | 689B - Mike and Shortcuts |
379B - New Year Present | 1498A - GCD Sum |
1277C - As Simple as One and Two | 1301A - Three Strings |
460A - Vasya and Socks | 1624C - Division by Two and Permutation |
1288A - Deadline | 1617A - Forbidden Subsequence |
914A - Perfect Squares | 873D - Merge Sort |
1251A - Broken Keyboard | 463B - Caisa and Pylons |
584A - Olesya and Rodion | 799A - Carrot Cakes |
1569B - Chess Tournament | 1047B - Cover Points |
1381B - Unmerge | 1256A - Payment Without Change |
908B - New Year and Buggy Bot | 979A - Pizza Pizza Pizza |
731A - Night at the Museum | 742A - Arpa’s hard exam and Mehrdad’s naive cheat |
1492A - Three swimmers | 1360E - Polygon |