#include<cstdio>
int n,ans,x[210],y[210],f[210];
const int MD=998244353;
int main()
{
    scanf("%d",&n);
    f[0]=1;
    for(int i=1; i<=n; i++)
    {
        scanf("%d%d",&x[i],&y[i]);
        f[i]=1ll*f[i-1]*2%MD;
    }
    ans=f[n]-n-1;
    for(int i=1; i<=n; i++)
    {
        for(int j=i+1; j<=n; j++)
        {
            int d=0;
            for(int k=j+1; k<=n; k++)
            d+=(y[i]-y[j])*(x[i]-x[k])==(y[i]-y[k])*(x[i]-x[j]);
            ans=(ans+MD-f[d])%MD;
        }
    }
    printf("%d\n",ans);
    return 0;
}
