#include <iostream>
using namespace std;


int main() {
    int a, b, c;
    cin >> a >> b >> c;
    int x = abs(b - c) + c;
    
    if(a < x) {
        cout << 1;
    }
    else if(x < a) {
        cout << 2;
    }
    else {
        cout << 0;
    }
    return 0;
}