Can someone tell me where my solution is wrong for PAINT THE WALL | Problem Code: PNTWLL

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#include<stdio.h>
int isInVisibleArr(int k,int a[], int size)
{ int i=0,ans=0;
for(i=0;i<=size;i++)
{
if(k==a[i])
{
ans=1;
}
}
return ans;
}
int main()
{
int t;
scanf("%d",&t);

	while(t--)
	{
		//INPUT
		int N,M;
		scanf("%d %d",&N,&M);
		int Harr[N];//height array
		int Carr[N];//Color array
		int i=0;
		while(i<N)
		{	scanf("%d",&Harr[i]);
			i++;
		}
		i=0;
		while(i<N)
		{	scanf("%d",&Carr[i]);
			i++;
		}

		//Processing:
		int vi=0;
		int vColor[N]; //stores visible array;
		i=N-1-1;
		int count=1;
		vColor[vi++]=Carr[N-1];
		int currVisHt=N-1;
		while(i>=0)
		{	if(Harr[i]>Harr[currVisHt])
			{
				if(isInVisibleArr(Carr[i],vColor,vi)==0)
				{
					count++;
					vColor[vi++]=Carr[i];
					currVisHt=i;
				}
			}

			i--;
		}

		printf("\n%d",count);
	}
}
//