Small Factorials-C code working on PC but not on code chef

helloo......my code is giving correct answer on PC but wrong on Code chef. Someone..please help me out what is wrong with this code.

http://www.codechef.com/viewsolution/3595694

#include<stdio.h>
void main()
{
    int a[200],k,num,b[100],i=0,j,m,n,temp,x,t;
    scanf("%d",&t);
    for(i=0;i<t;i++)
    {
        scanf("%d",&b[i]);
    }
    for(k=0;k<t;k++)
    {
        num=b[k];
        a[0]=1;
        for(i=1,m=1;i<=num;i++)
        {
            for(j=0,temp=0; j<=m-1 ;j++)
            {
                x=a[j]*i+temp;
                a[j]=x%10;
                temp=x/10;
            }
            for(;temp>0;j++,m++,temp/=10)
                a[j]=temp%10;
        }
        for(j=m-1;j>=0;j--)
            printf("%d",a[j]);
        printf("\n");
    }

}