Easy Question - Birthday Candles

for the easy level question Birthday Candles : http://www.codechef.com/problems/CANDLE/ i have tried all the test cases that i could but i m still getting wrong answer. Please tell me the tell case for which my code is failing or tell me the error that i am able to find. Here is the code :

#include<iostream>
#include<math.h>
using namespace std;
int main()
{
    int t;
    cin>>t;
    while(t--)
    {
        int arr[10];
        for(int i=0;i<10;i++)
            cin>>arr[i];
        int min_value=arr[1],min_index=1;
        for(int i=1;i<10;i++)
        {
            if(min_value>arr[i])
            {
                min_value=arr[i];
                min_index=i;
            }
        }
        if(min_value>arr[0])
        {
            min_value=arr[0];
            min_index=0;
        }
        if(min_value==0&&min_index==0)
            cout<<10<<endl;
        else if(min_value==0)
            cout<<min_index<<endl;
        else if(min_index==0)
        {
            int age=1;
            for(int i=0;i<min_value;i++)
                age*=10;
            cout<<age<<endl;
        }
        else
        {
            int age=min_index;
            for(int i=0;i<min_value;i++)
                age=min_index*10+min_index;
            cout<<age<<endl;
        }
    }
}