feat(challenges): add triangle-type

challenges/triangle-type/test/1/input.txt

@@ -0,0 +1,3 @@
+2
+2
+2

challenges/triangle-type/test/1/output.txt

@@ -0,0 +1 @@
+equilateral

challenges/triangle-type/test/10/input.txt

@@ -0,0 +1,3 @@
+7
+3
+2

challenges/triangle-type/test/10/output.txt

@@ -0,0 +1 @@
+impossible

challenges/triangle-type/test/11/input.txt

@@ -0,0 +1,3 @@
+10
+1
+3

challenges/triangle-type/test/11/output.txt

@@ -0,0 +1 @@
+impossible

challenges/triangle-type/test/12/input.txt

@@ -0,0 +1,3 @@
+97
+97
+97

challenges/triangle-type/test/12/output.txt

@@ -0,0 +1 @@
+equilateral

challenges/triangle-type/test/2/input.txt

@@ -0,0 +1,3 @@
+10
+10
+10

challenges/triangle-type/test/2/output.txt

@@ -0,0 +1 @@
+equilateral

challenges/triangle-type/test/3/input.txt

@@ -0,0 +1,3 @@
+3
+4
+4

challenges/triangle-type/test/3/output.txt

@@ -0,0 +1 @@
+isosceles

challenges/triangle-type/test/4/input.txt

@@ -0,0 +1,3 @@
+4
+3
+4

challenges/triangle-type/test/4/output.txt

@@ -0,0 +1 @@
+isosceles

challenges/triangle-type/test/5/input.txt

@@ -0,0 +1,3 @@
+10
+10
+2

challenges/triangle-type/test/5/output.txt

@@ -0,0 +1 @@
+isosceles

challenges/triangle-type/test/6/input.txt

@@ -0,0 +1,3 @@
+3
+4
+5

challenges/triangle-type/test/6/output.txt

@@ -0,0 +1 @@
+scalene

challenges/triangle-type/test/7/input.txt

@@ -0,0 +1,3 @@
+10
+11
+12

challenges/triangle-type/test/7/output.txt

@@ -0,0 +1 @@
+scalene

challenges/triangle-type/test/8/input.txt

@@ -0,0 +1,3 @@
+5
+4
+2

challenges/triangle-type/test/8/output.txt

@@ -0,0 +1 @@
+scalene

challenges/triangle-type/test/9/input.txt

@@ -0,0 +1,3 @@
+1
+1
+3

challenges/triangle-type/test/9/output.txt

@@ -0,0 +1 @@
+impossible