05AB1E , 37 바이트

¶¡ð«ć'.ksvU…/ \yXD>‚èJD„\/Qiõqëнk<X+]>

여러 줄 문자열로 입력하십시오. \/볼이 붙어 있으면 출력 합니다.

온라인으로 시도 하거나 모든 테스트 사례를 확인하십시오 .

설명:

¶¡                       # Split the (implicit) input-string on newlines
                         # (work-around instead of `|`, because it will stop at empty lines)
  ð«                     # Add a trailing space to each line (work-around because indexing
                         # -1 in 05AB1E will wrap around to the other side)
    ć                    # Extract head; pop and push the remainder-lines and first line
                         # separated to the stack
     '.k                '# Get the 0-based index of "." in this first line
s                        # Swap to get the remainder-list of lines
v                        # Loop over each line `y`:
 U                       #  Pop and store the top value (the index) in variable `X`
       X                 #  Push the current index `X`
        D>               #  Duplicate it, and increase the copy by 1
          ‚              #  Pair to [X, X+1]
      y    è             #  Index both of those into the current line `y`
            JD           #  Join the two characters together, and duplicate it
              „\/Qi      #  If it's equal to "\/":
                   q     #   Stop the program
                         #   (after which the string is output implicitly as result)
                  ë      #  Else:
                   н     #   Only leave the first character (at index `X`)
  …/ \              k    #   Get its 0-based index in string "/ \"
                     <   #   Decrease it by 1
                      X+ #   And add it to `X`
]                        # After the loop:
 >                       # Increase the top of the stack (`X`) by 1
                         # (after which it's output implicitly as result)

답변

qN/('.#)\_:,0+:e>f{' e]" /"f#0\+}{1$1$=\@2$-_@=@[\]$[W1]#/z}/

qN/('.#)\_:,:e>f{' e]" /"f#0\+0+}{1$=-}/

s->{int r=s.indexOf('.'),c;for(var x:s.split("\n")){for(;r>x.length()-2;x+=" ");c=x.charAt(r);if(c==46)continue;r/=c>47&x.charAt(r+1)==47?0:1;r+=c<33?0:c<48?-1:1;if(r<0)return 0;}return-~r;}

s->{                             // Method with String parameter and integer return-type
  int r=s.indexOf('.'),          //  Get the index of the dot on the first line
      c;                         //  Temp integer
  for(var x:s.split("\n")){      //  Split the input by newlines, and loop over the lines:
    for(;r>x.length()-2;x+=" "); //   Append trailing spaces if necessary
    c=x.charAt(r);               //   Get the character at the current index of this line
    if(c==46)                    //   If this is the first line (the char is the dot)
      continue;                  //    Continue to the next iteration of the loop
    r/=c>47&x.charAt(r+1)==47?   //   If we're stuck in a `\/`
        0                        //    Divide by 0 to exit the function with an error
       :1;                       //   Else: divide by 1 as no-op
    r+=c<33?                     //   If the current character is a space:
        0                        //    `r` remains at the same index
       :c<48?                    //   Else if it's a `/`:
        -1                       //    Index `r` is decreased by 1
       :                         //   Else (if it's a `\`):
        1;                       //    Index `r` is increased by 1
    if(r<0)                      //   If `r` is now -1:
      return 0;}                 //    Return 0
  return-~r;}                    //  After the loop: return the index `r` + 1

import sys
for l in sys.stdin:i=('.'in l)*l.find('.')or(i<0)*i-2*('\\/'in l[i-1:i+2])or' \\'.find((l+i*' ')[i])+i
print(i+1)

for l in sys.stdin:i=          # Change value i for each line in the input
('.'in l)*l.find('.')          # Set i to (0-indexed) dot position if present
or(i<0)*i                      # Keep i fixed if it is below zero
-2*('\\/'in l[i-1:i+2])        # Set i to -2 if \/ trap is encountered
or' \\'.find((l+i*' ')[i])+i   # Else: move position based on character
print(i+1)                     # Print final 1-indexed position

[:>[:(<"1@|.@}.([:(1&{+_*0>[:*/2-/\])(]+{~ ::])^:(<3))&.>/@,2<@i.~{.)[:(0,'/ \'<:@i.]);._1 LF,]