whats test 8
or whats wrong with that:
#include<iostream>
using namespace std;
int main()
{
    int n;
    cin >> n;
    char a[3]={'a','b','c'};
    if(n*6>10000){ cout<<"TOO LONG" << endl; return 0;}
    if(n==1){ cout << "a\nb\nc\n"; return 0;}
    for(int i=0; i<n; i++)
    {
            cout << a[i%3];
    }
    cout << endl;
    a[0]='a'; a[1]='c'; a[2]='b';
    //////////////////////////////
    for(int i=0; i<n; i++)
    {
            cout << a[i%3];
    }
    cout << endl;
    a[0]='b'; a[1]='a'; a[2]='c';
    //////////////////////////////
    for(int i=0; i<n; i++)
    {
            cout << a[i%3];
    }
    cout << endl;
    a[0]='b'; a[1]='c'; a[2]='a';
    //////////////////////////////
    for(int i=0; i<n; i++)
    {
            cout << a[i%3];
    }
    cout << endl;
    a[0]='c'; a[1]='a'; a[2]='b';
    //////////////////////////////
    for(int i=0; i<n; i++)
    {
            cout << a[i%3];
    }
    cout << endl;
    a[0]='c'; a[1]='b'; a[2]='a';
    //////////////////////////////
    for(int i=0; i<n; i++)
    {
            cout << a[i%3];
    }
    cout << endl;
    return 0;
}

Your problem is that line -

whats wrong with that? If the output exceeds 10000 letters output "TOO LONG" ?!?!

Oh, sorry my bad it's 100 000 not 10 000; AC now



Edited by author 25.11.2009 16:33

Edited by author 25.11.2009 16:33

Edited by author 25.11.2009 16:33

Edited by author 25.11.2009 16:33

Edited by author 25.11.2009 16:33

Btw, instead of copy/pasting code for every permutation you can

    char a[] = "abc";
    do{
      F(i,n) cout << a[i%3]; cout << endl;
    }while(next_permutation(a,a+3));

where F is
#define F(i,n) for(int i = 0; i < n; ++i)