d-gdc, 97 bytes

Result

AC

Duration

1642ms

Code [DL]

import std.stdio;void main(){char c;for(int x;readf!"%s"(c);write(c|=x<1))x=c&4?0:-~x%51-c%2*51;}

stdin

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    K                                             

stdout

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    K!!!!!!!!!!!!!!!                              

stderr

strace