Thanks:).

#include<iostream.h>

unsigned char n;
char a[200][200];
unsigned char p[200];
char used[200];

void print(unsigned char i, unsigned char meta, unsigned char step)
{
    if (i!=meta) print(p[i],meta, step+1);
             else cout<<(short)step<<" ";
    cout<<(short)(i+1)<<" ";
}

void visit(unsigned char i)
{
unsigned char j;
    if (used[i])
    {
        print(p[i],i,1);
        cout<<endl;
        return;
    }
    used[i]=1;
    for (j=0; j<n; j++)
        if (a[i][j])
        {
            a[i][j]=0;
            a[j][i]=0;
            p[j]=i;
                visit(j);
        }
}

void main()
{
int  i, j, rings, how;
long m;
    cin>>n>>m;
    for (i=0; i<n; i++)
        for (j=0; j<n; j++) a[i][j]=0;
    while (m>0)
    {
        cin>>i>>j;
        --i,--j;
        a[i][j]=1;
        a[j][i]=1;
        --m;
    }
    rings=0;
    for (i=0; i<n; i++)
    {
        how=0;
        for (j=i+1; j<n; j++)
            how+=(short)a[i][j];
        if (how>0) rings=rings+how-1;
    }
    cout<<rings<<endl;
    for (j=0; j<n; j++) used[j]=0;
    for (i=0; i<n; i++)
     if (!used[i])
     {
        for (j=0; j<n; j++) p[j]=-1;
        visit(i);
     }
}

> Thanks:).
>
> #include<iostream.h>
>
> unsigned char n;
> char a[200][200];
> unsigned char p[200];
> char used[200];
>
> void print(unsigned char i, unsigned char meta, unsigned char step)
> {
>     if (i!=meta) print(p[i],meta, step+1);
>              else cout<<(short)step<<" ";
>     cout<<(short)(i+1)<<" ";
> }
>
> void visit(unsigned char i)
> {
> unsigned char j;
>     if (used[i])
>     {
>         print(p[i],i,1);
>         cout<<endl;
>         return;
>     }
>     used[i]=1;
>     for (j=0; j<n; j++)
>         if (a[i][j])
>         {
>             a[i][j]=0;
>             a[j][i]=0;
>             p[j]=i;
>                 visit(j);
>         }
> }
>
> void main()
> {
> int  i, j, rings, how;
> long m;
>     cin>>n>>m;
>     for (i=0; i<n; i++)
>         for (j=0; j<n; j++) a[i][j]=0;
>     while (m>0)
>     {
>         cin>>i>>j;
>         --i,--j;
>         a[i][j]=1;
>         a[j][i]=1;
>         --m;
>     }
>     rings=0;
>     for (i=0; i<n; i++)
>     {
>         how=0;
>         for (j=i+1; j<n; j++)
>             how+=(short)a[i][j];
>         if (how>0) rings=rings+how-1;
>     }
>     cout<<rings<<endl;
>     for (j=0; j<n; j++) used[j]=0;
>     for (i=0; i<n; i++)
>      if (!used[i])
>      {
>         for (j=0; j<n; j++) p[j]=-1;
>         visit(i);
>      }
> }