#include<bits/stdc++.h>
#define A scanf
#define B printf
using namespace std;
int t;
int main(){
	A("%d", &t);
	for(int num = 1;num <= t;num++){
		long long a, b, c;
		A("%lld%lld%lld", &a, &b, &c);
		B("Case %d: ", num);
		if(a + b > c && a + c > b && b + c > a){
			if(a == b || b == c || a == c){
				if(a == b == c)
					B("Equilateral\n");
				else
					B("Isosceles\n");
			}
			else
				B("Scalene\n");
		}
		else
			B("Invalid\n");
	}
	return 0;
}

WA了，各位dalao挑个错QAQ

太弱了怎么小红题还能WA