10878 - Decode the tape

[Roby]

Can someone reply me how's the "morse code" would be? Here's my discovery for that problem, is it right or is there something missing?

Code: Select all

a  00**.**0    A  0***.**0
b  00**.*0*    B  0***.*0*
c  00**.*00    C  0***.*00
d  00**.0**    D  0***.0**
e  00**.0*0    E  0***.0*0
f  00**.00*    F  0***.00*
g  00**.000    G  0***.000

h  00*0.***    H  0**0.***
i  00*0.**0    I  0**0.**0
j  00*0.*0*    J  0**0.*0*
k  00*0.*00    K  0**0.*00
l  00*0.0**    L  0**0.0**
m  00*0.0*0    M  0**0.0*0
n  00*0.00*    N  0**0.00*
o  00*0.000    O  0**0.000

p  000*.***    P  0*0*.***
q  000*.**0    Q  0*0*.**0
r  000*.*0*    R  0*0*.*0*
s  000*.*00    S  0*0*.*00
t  000*.0**    T  0*0*.0**
u  000*.0*0    U  0*0*.0*0
v  000*.00*    V  0*0*.00*
w  000*.000    W  0*0*.000

x  0000.***    X  0*00.***
y  0000.**0    Y  0*00.**0
z  0000.*0*    Z  0000.*0*

_  *0**.***
.  *0*0.00*
\n ***0.*0*

[misof]

The code are just normal ASCII values. On the first sight, your value for capital Z is wrong.

[Roby]

how to know and convert the ASCII value to tape's "morse" code? I really don't understand. Those are my guessing only especially for the quotation and upper case letters.

About the Z, I've typed mistake. thanks for your help.

[Cho]

There is nothing related to morse code.
Ignore the columns of '|' and '.' There is eight characters in each row. They form a 8-bit code. 'o' is 1 and space is 0. So the first row of the sample means 01000001 which is 65 and it is the ascii value of 'A'.

[mamun]

There is nothing related to morse code.
Ignore the columns of '|' and '.' There is eight characters in each row. They form a 8-bit code. 'o' is 1 and space is 0. So the first row of the sample means 01000001 which is 65 and it is the ascii value of 'A'.

Thanks to Cho. Without any explanation of the code in the problem, it was almost meaningless!

[jjtse]

Hey Guys,

I'm so stumped. I bet you the reason my program is getting WA is because I'm using something that isn't available in the judge's version of the compiler.

I ran this, and it works fine. I even modified my codes to ignore '|' and '.', just in case they stuck them in there. Can anyone see what's wrong with my codes?:

Code: Select all


#include <iostream>
#include <string>

using namespace std;

int binToI(string s){
  int i;
  int value = 0;
  int n = 128;

  for (i=0; i<s.length(); i++)
    {
      while (s[i] == '|' || s[i] == '.')
        i++;
      if (s[i] == 'o'){
        value = value + n;
      }
      n=n/2;
    }

  return value;
}


int main(){

  int i;
  char c;
  int val;
  string s;


  getline(cin, s);
  while (!cin.eof()){
    val = binToI(s);
    c = (char)val;
    cout<<c;
    getline(cin, s);
  }

  return 0;
}



Thanks

[Martin Macko]

Hey Guys,

I'm so stumped. I bet you the reason my program is getting WA is because I'm using something that isn't available in the judge's version of the compiler.

I ran this, and it works fine. I even modified my codes to ignore '|' and '.', just in case they stuck them in there. Can anyone see what's wrong with my codes?:

The input begins with line "___________" that your method decodes to 0. You shouldn't write this 0 to the output.

[vinit_iiita]

Code: Select all

code removed after AC

plz give the test cases for which it is incorret or point out mistakes...
plz help me out...

[Martin Macko]

plz give the test cases for which it is incorret or point out mistakes...
plz help me out...

You output garbage (namely ASCII 0x00) after the last character.

[vinit_iiita]

hi plz tell me how can i avoid that. i could not figure out how...

[vinit_iiita]

i would like to know its elobaration...

[Martin Macko]

hi plz tell me how can i avoid that. i could not figure out how...

You are getting the ASCII symbol 0x00 from the last input line '___________'. Make sure, your program doesn't try to translate this line.

[vinit_iiita]

thanks a lot martin...i got ac now...

[rafi6047]

pls help me. i dont know y im getting WA. this is my code:


#include<iostream.h>
#include<stdio.h>
#include<string.h>

int main()
{
char start[20],end[20], middle[1000][20];
int i,j,k,l;

while(gets(start))
{

i=0;

while(gets(middle[i++]))
{
if(!strcmp("| o. o |",middle[i-1])) break;
}

gets(end);

for(j=0;j<i;j++)
{

if(!strcmp(middle[j],"| oo . o|")) cout<<"a";
else if(!strcmp(middle[j],"| o . o|")) cout<<"A";
else if(!strcmp(middle[j],"| o . |")) cout<<" ";

else if(!strcmp(middle[j],"| ooo . o|")) cout<<"q";
else if(!strcmp(middle[j],"| o o . o|")) cout<<"Q";
else if(!strcmp(middle[j],"| ooo .o o|")) cout<<"u";
else if(!strcmp(middle[j],"| o o .o o|")) cout<<"U";
else if(!strcmp(middle[j],"| oo o. o|")) cout<<"i";
else if(!strcmp(middle[j],"| o o. o|")) cout<<"I";
else if(!strcmp(middle[j],"| oo . oo|")) cout<<"c";
else if(!strcmp(middle[j],"| o . oo|")) cout<<"C";
else if(!strcmp(middle[j],"| oo o. oo|")) cout<<"k";
else if(!strcmp(middle[j],"| o o. oo|")) cout<<"K";

else if(!strcmp(middle[j],"| oo . o |")) cout<<"b";
else if(!strcmp(middle[j],"| o . o |")) cout<<"B";
else if(!strcmp(middle[j],"| ooo . o |")) cout<<"r";
else if(!strcmp(middle[j],"| o o . o |")) cout<<"R";
else if(!strcmp(middle[j],"| oo o.ooo|")) cout<<"o";
else if(!strcmp(middle[j],"| o o.ooo|")) cout<<"O";
else if(!strcmp(middle[j],"| ooo .ooo|")) cout<<"w";
else if(!strcmp(middle[j],"| o o .ooo|")) cout<<"W";
else if(!strcmp(middle[j],"| oo o.oo |")) cout<<"n";
else if(!strcmp(middle[j],"| o o.oo |")) cout<<"N";

else if(!strcmp(middle[j],"| oo .oo |")) cout<<"f";
else if(!strcmp(middle[j],"| o .oo |")) cout<<"F";
else if(!strcmp(middle[j],"| oooo. |")) cout<<"x";
else if(!strcmp(middle[j],"| o oo. |")) cout<<"X";

else if(!strcmp(middle[j],"| oo o. o |")) cout<<"j";
else if(!strcmp(middle[j],"| o o. o |")) cout<<"J";
else if(!strcmp(middle[j],"| ooo .o o|")) cout<<"u";
else if(!strcmp(middle[j],"| o o .o o|")) cout<<"U";
else if(!strcmp(middle[j],"| oo o.o o|")) cout<<"m";
else if(!strcmp(middle[j],"| o o.o o|")) cout<<"M";
else if(!strcmp(middle[j],"| ooo . |")) cout<<"p";
else if(!strcmp(middle[j],"| o o . |")) cout<<"P";
else if(!strcmp(middle[j],"| ooo . oo|")) cout<<"s";
else if(!strcmp(middle[j],"| o o . oo|")) cout<<"S";


else if(!strcmp(middle[j],"| ooo .oo |")) cout<<"v";
else if(!strcmp(middle[j],"| o o .oo |")) cout<<"V";
else if(!strcmp(middle[j],"| oo .o o|")) cout<<"e";
else if(!strcmp(middle[j],"| o .o o|")) cout<<"E";
else if(!strcmp(middle[j],"| ooo . o |")) cout<<"r";
else if(!strcmp(middle[j],"| o o . o |")) cout<<"R";

else if(!strcmp(middle[j],"| ooo .o |")) cout<<"t";
else if(!strcmp(middle[j],"| o o .o |")) cout<<"T";
else if(!strcmp(middle[j],"| oo o. |")) cout<<"h";
else if(!strcmp(middle[j],"| o o. |")) cout<<"H";


else if(!strcmp(middle[j],"| oo o.o |")) cout<<"l";
else if(!strcmp(middle[j],"| o o.o |")) cout<<"L";
else if(!strcmp(middle[j],"| oooo. o |")) cout<<"z";
else if(!strcmp(middle[j],"| o oo. o |")) cout<<"Z";
else if(!strcmp(middle[j],"| oooo. o|")) cout<<"y";
else if(!strcmp(middle[j],"| o oo. o|")) cout<<"Y";

else if(!strcmp(middle[j],"| oo .o |")) cout<<"d";
else if(!strcmp(middle[j],"| o .o |")) cout<<"D";
else if(!strcmp(middle[j],"| oo .ooo|")) cout<<"g";
else if(!strcmp(middle[j],"| o .ooo|")) cout<<"G";
else if(!strcmp(middle[j],"| o o.oo |")) cout<<".";
else if(!strcmp(middle[j],"| o.oo |")) cout<<",";
else if(!strcmp(middle[j],"| o. o |")) cout<<"\n";



}

}

return 0;
}

[rio]

Search about ascii, and you well get it.