#include<bits/stdc++.h>
using namespace std;
int main(){ 
	int a,b,c,d;
	cin>>a>>b>>c;
	d=a-(b*c);
	d!=0;
	cout<<d;	
}
/**************************************************************
	Problem: 1599
	User: sucongyi
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/