Code : HEIGHTS
Failing 1 out of 7 test cases.
Please explain me why?
#include <stdio.h>
int main(void) {
int t;
scanf("%d\n",&t);
while(t--)
{
int n;
scanf("%d\n",&n);
int arr[n];
for(int i = 0; i < n; i++)
{
scanf("%d ",&arr[i]);
}
int max = 0;
for(int i = 0; i < n; i++)
{
max=arr[i]>max?arr[i]:max;
}
int len = max+1;
// printf("len : %d",len);
int freq[len];
for(int i = 0; i < len; i++)
{
freq[i]=0;
}
for(int i = 0; i < n; i++)
{
freq[arr[i]]++;
}
int c=0;
for(int i = 0; i < len; i++)
{
if(freq[i]>0)
{
if(freq[i]==1)
c++;
}
}
printf("%d\n",(c+1)/2);
}
return 0;
}
