https://www.codechef.com/problems/CEQUAL

Why is it giving WA?
Please help

#include <stdio.h>

int main(void) {
int a[100000],t,i,j,n,c=0;
scanf("%d",&t);
while(t>0)
{

scanf("%d",&n);

i=0;
while(i<n)
{
scanf("%d",&a[i]);

   i++;

}

for(i=0;i<n;i++)

 {
    {   for(j=i+1;j<n;j++)
       {
           if(a[i]==a[j])
           {
               c=c+1;
               break;
           }



       }






    }


 }  t--;

if(c==0)
{
printf(“No\n”);
}
else
{
printf(“Yes\n”);
}

}

return 0;

}