int main()
{int a = 0;int b = 0;int c = 0;scanf("%d%d%d", &a, &b, &c);if ((a+b>c)&&(a+c>b)&&(b+c>a)){if (a == b && b == c){printf("等边三角形\n");}else if ((a == b && b != c) || (a == c && c != b) || (b == c && c != a)){printf("等腰三角形\n");}elseprintf("普通三角形\n");}else{printf("不是三角形\n");}return 0;
}