Problem:
Score : 500 points

Problem Statement

Takahashi has decided to work on K days of his choice from the N days starting with tomorrow.

You are given an integer C and a string S. Takahashi will choose his workdays as follows:

After working for a day, he will refrain from working on the subsequent C days.

If the i-th character of S is x, he will not work on Day i, where Day 1 is tomorrow, Day 2 is the day after tomorrow, and so on.

Find all days on which Takahashi is bound to work.

Constraints

1 \leq N \leq 2 \times 10^5

1 \leq K \leq N

0 \leq C \leq N

The length of S is N.

Each character of S is o or x.

Takahashi can choose his workdays so that the conditions in Problem Statement are satisfied.

Input

Input is given from Standard Input in the following format:

N K C
S

Output

Print all days on which Takahashi is bound to work in ascending order, one per line.

Sample Input 1

11 3 2
ooxxxoxxxoo

Sample Output 1

6

Takahashi is going to work on 3 days out of the 11 days. After working for a day, he will refrain from working on the subsequent 2 days.

There are four possible choices for his workdays: Day 1,6,10, Day 1,6,11, Day 2,6,10, and Day 2,6,11.

Thus, he is bound to work on Day 6.

Sample Input 2

5 2 3
ooxoo

Sample Output 2

1
5

There is only one possible choice for his workdays: Day 1,5.

Sample Input 3

5 1 0
ooooo

Sample Output 3

There may be no days on which he is bound to work.

Sample Input 4

16 4 3
ooxxoxoxxxoxoxxo

Sample Output 4

11
16

Solution in Pascal (FPC 2.6.2) (judge verdict: Accepted)

var
	S:String;
	N,K,C,i,now:Longint;
	L,R:Array[1..200000]of Longint;
begin
	readln(N,K,C);
	readln(S);
	now:=0;i:=1;
	while i<=N do begin
		if S[i]='o'then begin
			inc(now);
			L[i]:=now;
			inc(i,C);
		end;
		inc(i);
	end;
	now:=0;i:=N;
	while i>=1 do begin
		if S[i]='o'then begin
			dec(now);
			R[i]:=now;
			dec(i,C);
		end;
		dec(i);
	end;
	for i:=1 to N do if(L[i]>0)and(R[i]<0)and(L[i]=K+1+R[i])then writeln(i);
end.