#include <stdio.h>
int main(void) {
int a, b, c;
scanf("%d%d%d", &a
, &b
, &c
); if (a == b && b == c)
printf("Equilateral Triangle\n"); else if (a == b || b == c || a == c)
printf("Isosceles Triangle\n"); else
return 0;
}
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