#define _USE_MATH_DEFINES

#include <iostream>
#include <iomanip>

#include <algorithm>
#include <cmath>

#include <string>
#include <list>
#include <queue>
#include <vector>
#include <complex>
#include <set>

/////////
#define REP(i, x, n) for(int i = x; i < n; i++)
#define rep(i,n) REP(i,0,n)
#define P(p) cout<<(p)<<endl;
/////////
typedef long long LL;
typedef long double LD;
/////////
using namespace::std;
/////////

const LL mod = 1000003;

LL gcd(LL m,LL n){
	if( m<n ) return gcd(n,m);
	LL r = m % n;
	if( r == 0) return n;
	return gcd(n,r);
}

int main(void){
    std::cin.tie(0); 
    std::ios::sync_with_stdio(false);
    std::cout << std::fixed;//
    //cout << setprecision(6);//
	
	LL L;
	cin>>L;
	LL Len = L/4;
	LL ans = 0;
	for(int n=1;;++n){
		if( 2*(n+1)*(2*n+1) > Len){
			break;
		}
		for(int m=n+1;;++m){
			if( 2*m*(m+n)<=Len ){
				if( (m-n)%2==1 && gcd(m,n) == 1 ){
					++ans;
					ans %= mod;
				}
			}else{
				break;
			}
		}
	}
	P(ans%mod);
    return 0;
}