Decryption

The 3rd test case is wrong.

aabb 2
the first char of the output should be a

i m not able to submit it says... restricted area

i am not able to submit a java solution

@coders_ntu : Only C/CPP codes are allowed for the contest.

// firstapp.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"

#include <string.h>
#include <stdlib.h>

char buf[3000];
char buf1[3000];

int posit(char t[], int len, char a){
int i;
for(i = 0; i < len; i++){
if(t[i] == a) return i;
}
//This case shouldn't occur
return -1;
}

char* match(int pos, int len){
char tmp[3000];
int cnt = 0;
int index = 0;
tmp[index++] = buf[pos];
while(cnt++ < len){
pos = posit(buf, len, buf1[pos]);                   
tmp[index++] = buf[pos];
}
tmp[index - 1] = 0;
return tmp;
}

int cmp(const void* arg1, const void* arg2){
char a = *(char*)arg1;
char b = *(char*)arg2;
return a < b ? 1 : (a == b) ? 0 : -1;
}

int main(){
int n = 0, i, pos, len;
scanf("%dn", &n);
for(i = 0; i < n; i++){
scanf("%s %d", buf, &pos);
len = strlen(buf);
strncpy(buf1, buf, len);
qsort((void*)buf1, len, sizeof(char), cmp);   
printf("%sn", match(pos - 1, strlen(buf)));
}

return 0;
}

sorry!

Why can't I submit?

FDHDFYTF;R57UTFUTIK8I

@digcon9: Have you registered your team for this contest. If yes, login with the team login credentials

I've registerd at itbhu, but not at codechef. Is there any solution to such problem?

i have looged in with my team 3fools but on submitting it shows internal error occured.........

@digcon9: No, you can not particiapte in the contest. Registration at codechef was compulsary as mentioned in the rules section of the event at Codefest ans Codechef website.

You can still try out the problems and get to know new things when the solutions are released.

@titan: have you registered your team for this contest i.e. MANTH10 at Codechef? If not, then you can not participate.

yes i have registered my teamat codechef

team handle "3fools" disply team name "titan"

kindly look into the problem..........

@titan: Kindly, try submitting the code again

forgot my team name... not able to submit.. pls help...

@Cinash: Search your team at http://www.codechef.com/teams/list/MANTH10/

my team name is same as the codechef username... where do i login with my team name?

@codefest again the same problem persists................it says internal error occured on submitting the solution ........

plzzz help............

when i submit the solution, this error is displayed. "contest_problem_id field is required." ... why so ???

what must i do ???

Current ranking is available at http://www.codechef.com/teams/list/MANTH10/

@titan: Does the same problem occur when you try to submit codes for other problem also?

@define:Try submitting the code for some other problem. Let me know of the outcome.

yes the same problem exists while submitting the slution of other problems.......................

I hv registered my team at codefest... but i m not able to register it on codechef... plz hekp me..

I hv registered my team at codefest... but i m not able to register it on codechef... plz help me...

"contest_problem_id field is required." ... the same error display occurs everytime ...

however i see that my solutions were submitted ...:) so as long as it is submitted ... no problemo ...

Those who need solution...

#include<iostream>

using namespace std;

void merge_sort(char x[], int end, int start) {

int j = 0;

const int size = start - end + 1;

int mid = 0;

int mrg1 = 0;

int mrg2 = 0;

char executing[3000];

if(end == start)

return;

mid = (end + start) / 2;

merge_sort(x, end, mid);

merge_sort(x, mid + 1, start);

for(j = 0; j < size; j++)

executing[j] = x[end + j];

mrg1 = 0;

mrg2 = mid - end + 1;

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

if(mrg2 <= start - end)

if(mrg1 <= mid - end)

if(executing[mrg1] < executing[mrg2])

x[j + end] = executing[mrg2++];

else

x[j + end] = executing[mrg1++];

else

x[j + end] = executing[mrg2++];

else

x[j + end] = executing[mrg1++];

}

}

int main()

{

int t;

cin>>t;

cin.ignore('n',10);

char str[3000],str1[3000],result[3000];

int end,pos;

while(t--)

{

cin.getline(str,3000);

end=cin.gcount();

pos=int(str[end-2]-48)-1;

end-=3;

for(int i=0;i<end;i++){

str1[i]=str[i];

}

merge_sort(str1, 0, end-1);

for(int i=0;i<end;i++){

result[i]=str[pos];

str[pos]='@';

for(int j=0;j<end;j++){

if(str[j]==str1[pos]){

pos=j;

break;

}

}

}

result[end]='';

cout<<result<<endl;

}

return 0;

}

which compiler r u using??? y is iostream.h giving compilation error?

#include<iostream>

using namespace std;

void merge_sort(char x[], int end, int start) {

int j = 0;

const int size = start - end + 1;

int mid = 0;

int mrg1 = 0;

int mrg2 = 0;

char executing[3000];

if(end == start)

return;

mid = (end + start) / 2;

merge_sort(x, end, mid);

merge_sort(x, mid + 1, start);

for(j = 0; j < size; j++)

executing[j] = x[end + j];

mrg1 = 0;

mrg2 = mid - end + 1;

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

if(mrg2 <= start - end)

if(mrg1 <= mid - end)

if(executing[mrg1] < executing[mrg2])

x[j + end] = executing[mrg2++];

else

x[j + end] = executing[mrg1++];

else

x[j + end] = executing[mrg2++];

else

x[j + end] = executing[mrg1++];

}

}

int main()

{

int t;

cin>>t;

cin.ignore('n',10);

char str[3000],str1[3000],result[3000];

int end,pos;

while(t--)

{

cin.getline(str,3000);

end=cin.gcount();

pos=int(str[end-2]-48)-1;

end-=3;

for(int i=0;i<end;i++){

str1[i]=str[i];

}

merge_sort(str1, 0, end-1);

for(int i=0;i<end;i++){

result[i]=str[pos];

str[pos]='@';

for(int j=0;j<end;j++){

if(str[j]==str1[pos]){

pos=j;

break;

}

}

}

result[end]=NULL;

cout<<result<<endl;

}

return 0;

}

Copy and paste the solution in ur source file...

I logged into my account + I have registerd my team,how to login to my team,how to login from my team account ? Am i need to login in both ?

@nice coder: It was required for you to register both at Codefest and Codechef to participate in the contest.

@Debanjan: Login on codechef website with your team handle and password.

I have registered with the team name CodersOfPhoenix but I forgot my password,what to do ?

@CodeFest But u must had provided the option to register even during the contest is taking place... I hv made the solution but not able to submit it... :-(

@CodeFest i think my solution is correct which i hv provided above...!!!!!!!!

@Debanjan: Logout and when you try to login use the option of forgot password

@nice coder: Rules for registration were clearly mentioned on codechef website. You can still try to solve the problems, this will help you to understand the solutions when they will be released.

why our team is not listed in eligible list? we registered on codefest with same name.

is there no way of submitting the solution ..................................i m constantly getting internal error in system............kindly resolve it

@Musketiri : Eligible team section shows invalid data. All teams registered on Codechef wenbsite and listed at http://www.codechef.com/teams/list/MANTH10/ are eligible for prizes if they form a team for Manthan at Codefest website with same team members. The team names can be different.

@titan: We are trying to resoolve your issue. Please be patient. We will let you know as soon as the problem is resolved.

is anybody dere ??? i m unable 2 submit a single solution..........seems like a dead end.............constantly giving internal system error why so???

@titan: please check your my submissions page. Can you see your submissions on that page?

#include<iostream>

using namespace std;

void merge_sort(char x[], int end, int start) {

int j = 0;

const int size = start - end + 1;

int mid = 0;

int mrg1 = 0;

int mrg2 = 0;

char executing[3000];

if(end == start)

return;

mid = (end + start) / 2;

merge_sort(x, end, mid);

merge_sort(x, mid + 1, start);

for(j = 0; j < size; j++)

executing[j] = x[end + j];

mrg1 = 0;

mrg2 = mid - end + 1;

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

if(mrg2 <= start - end)

if(mrg1 <= mid - end)

if(executing[mrg1] < executing[mrg2])

x[j + end] = executing[mrg2++];

else

x[j + end] = executing[mrg1++];

else

x[j + end] = executing[mrg2++];

else

x[j + end] = executing[mrg1++];

}

}

int main()

{

int t;

cin>>t;

cin.ignore('n',10);

char str[3000],str1[3000],result[3000];

int end,pos;

while(t--)

{

cin.getline(str,3000);

end=cin.gcount();

pos=int(str[end-2]-48)-1;

end-=3;

for(int i=0;i<end;i++){

str1[i]=str[i];

}

merge_sort(str1, 0, end-1);

for(int i=0;i<end;i++){

result[i]=str[pos];

str[pos]='@';

for(int j=0;j<end;j++){

if(str[j]==str1[pos]){

pos=j;

break;

}

}

}

result[end]=NULL;

cout<<result<<endl;

}

return 0;

}

on clicking mysubmission page it says page not found

@Sankalp: We can only help to explain the sample test cases, if required, during the contest.

@titan: Thats a really wierd problem. Codechef guys are currently working on your problem and will let you know as soon as the issue is resolved

hey, i cant submit any solution. there is no submit button for submission although i am logged in. may be this problem is because my profile name is same as my team name. what should i do now???

titan, what is the name of your team?

I also had (well, probably still have) the same problem of not being able to submit solutions and I think the problem could be because of my team name. I entered '.' symbol as my team name (I was surprised that the system allowed me to do that) and I can't submit code or even open team profile page.