#include<stdio.h>
#include<conio.h>

struct passenger
{
  char name[10];
  int age;
  int isempty=0;        // Declaration missing;
}s[65];

void main()
{
  int total,rows,flag,n,left;
  char ch='y';
  while(ch=='y')
  {
    total=65;
    rows=flag=left=0;
    printf("\nEnter how many seats : ");
    scanf("%d",n);
    while(rows<=13)
     {
     left=5-flag%5;
     if(n<=left)
       {
        allot(s,n,&total,&rows);
        flag+=n;
       }
     else
     {
        rows++;
        allot(s,n,&total,&rows);
        flag+=n;
     }
    }
    printf("\nPress y else any");
   ch=getch();
   }
}

void allot(struct *s,int n,int *total,int *rows)  // expected  {
{
  char NAME[10];
  int AGE,i;
  int loc=find(n);
    if(loc==-1)
    {
    allot(s,n-1,&total,&rows); //to distribute the seats into n-1 and 1 combination
    allot(s,1,&total,&rows);
    return;
    }
  for(i=0;i<n;i++)
  {
    printf("\nNAME : ");
    scanf("%s",NAME);
    printf("\nAGE : ");
    scanf("%d",AGE);
    s[loc+i].name=NAME;
    s[loc+i].age=AGE;
    s[loc+i].isempty=1;
    total--;
    if(total%5==0)
       rows++;
  }
}

//this fucntion find if there are num number of
//consecutive seats and if yes then returns the index
//from where they start;

int find(int num)
{
  int num1=num,i;
  for(i=0;i<65;i++)
    {
    if((i+1)%5==0)
    {
      num1=num;
      continue;
    }
    if(num1==0)
    break;
    if(s[i].isempty==0)
    num1--;
    else
    num1=num;
    }
  if(num1!=0)
    return -1;
  else
    return i-num1;
}

struct passenger
{
  char name[10];
  int age;
  int isempty;
}s[65];