#include <stdio.h> int main () { int a,b,c; scanf("%d %d %d",&a,&b,&c); if(a>=b&&b>=c) {a=b; b=c;} else if(a>=c&&c>=b){ a=b; b=c; } else if(b>=a&&a>=c){ a=a; b=c; } else if(b>=c&&c>=a){ a=a; b=c; } else if(c>=a&&a>=b){ a=a; b=b; } else{ a=a; b=b; } if(0>a&&a>10000||0>b&&b>10000||0>c&&c>10000)return 0; if(a+b<c) { printf("Not triangle"); } else { if(aa+bb==cc) { printf("Right triangle\n"); } if(aa+bb>cc) { printf("Acute triangle\n"); } if(aa+bb<c*c) { printf("Obtuse triangle\n"); } if(a==b) { printf("Isosceles triangle\n"); } if(a==b&&a==c) { printf("Equilateral triangle"); } } return 0; }

#include <stdio.h>
int main () {
	int a,b,c;
	scanf("%d %d %d",&a,&b,&c);
	if(a>=b&&b>=c)
	{a=b;
	b=c;}
	else if(a>=c&&c>=b){
		a=b;
		b=c;
	}
	else if(b>=a&&a>=c){
		a=a;
		b=c;
	}
	else if(b>=c&&c>=a){
		a=a;
		b=c;
	}
	else if(c>=a&&a>=b){
		a=a;
		b=b;
	}
	else{
		a=a;
		b=b;
	}
	if(0>a&&a>10000||0>b&&b>10000||0>c&&c>10000)return 0;
	if(a+b<c) {
		printf("Not triangle");
	} else {
		if(a*a+b*b==c*c) {
			printf("Right triangle\n");
		}
		if(a*a+b*b>c*c) {
			printf("Acute triangle\n");
		}
		if(a*a+b*b<c*c) {
			printf("Obtuse triangle\n");
		}
		if(a==b) {
			printf("Isosceles triangle\n");
		}
		if(a==b&&a==c) {
			printf("Equilateral triangle");
		}
	}
	return 0;
}