#include<fstream.h>
#define endl '\n'

int main(){
ifstream fin("ecu2.IN");
ofstream fout("ecu2.OUT");
int n,a,i,b,c,d;
fin>>n;
for(i=1;i<=n;i++){
									fin>>a>>b>>c;
									d=b*b-4*a*c;
									if(a==0) {
														if(b!=0) fout<<"1\n";
									else if(c!=0) fout<<"0\n";
											else fout<<"INF\n";
									}
									else if(d>0) fout<<"2\n";
									else if(d==0) fout<<"1\n";
									else fout<<"0";
									}

return 0;
}