SIGSEGV error

[noobcoder123_sof]

I am getting runtime error (SIGSEGV)on spoj whereas my code runs absolutely fine on ideone.Here is the link to the problem-http://www.spoj.com/problems/WSCIPHER/
Here is my code in C++

#include<bits/stdc++.h>
using namespace std;
int i;
 string rotate(string s,int k,int n,int A[])
  {
    char temp[n];int c=0;
    for(i=n-k;i<n;i++)
	 {
	 temp[c]=s[A[i]];
	 c++;
	 } 
    for(i=n-k-1;i>=0;i--)
     s[A[i+k]]=s[A[i]];
    for(i=0;i<c;i++)
     s[A[i]]=temp[i];
    return s;	
 } 
 int main()
  {
    int p,k1,k2,k3;
	for(p=0;;p++)
	 {
		scanf("%d%d%d",&k1,&k2,&k3);
		string s;
		if(k1==0&&k2==0&&k3==0)
		 break;
		cin >> s;
		int n=s.length();
		int A1[n];
		int A2[n];
		int A3[n];
		int c1=0,c2=0,c3=0;	
		for(i=0;i<s.length();i++)
		 {
			if((int)s[i]>=97 && (int)s[i] <=105)
			 {
				A1[c1]=i;
				c1++;
			 }
			if((int)s[i]>=106 && (int)s[i] <=114)
			 {
				A2[c2]=i;
				c2++;
			 }   
			if((int)s[i]>114 ||(int)s[i]==95)
			 {
				A3[c3]=i;
				c3++;
			 }   	   
		 }
		string r=rotate(s,k1,c1,A1);
		r=rotate(r,k2,c2,A2);
		r=rotate(r,k3,c3,A3);
		cout << r << endl;
	}
	return 0;
}

Thanks in advance

[noobcoder123_sof]

Solved]