Go: package main
// 三角形の形は辺の長さで決まる． 順番に３つの正整数が与えられたとき， 辺の長さがそれらの値と一致する三角形が存在するかどうかを調べ,
//  存在するなら鋭角三角形，直角三角形，鈍角三角形のいずれかを判定し， 次の入力へ進む． 三角形が存在しないとき， それまでに入力された，
// 三角形，直角三角形，鋭角三角形，鈍角三角形の 個数を空白で区切って出力し， それ以降の入力は無視して終了する
// 入力の中には必ず三角形が存在しないようなものがある と仮定してよい. 入力の行数は判らないが各行には３つの正整数が空白で区切って書かれている．
//  ただし，各整数は100 以下とする.

// return
// 三角形 直角三角形　鈍角三角形 鈍角三角形
import (
	"os"
	"fmt"
	"bufio"
)


var sc = bufio.NewScanner(os.Stdin)

func max(a, b, c int) (int, int, int) {
	if a > b {
		if b > c {
			return a, b, c
		} else {
			return c, a, b
		}
	} else {
		if b > c {
			return b, a, c
		} else {
			return c, b, a
		}
	}
}

func find_trianges(a, b, c int) string {
	a, b, c = max(a, b, c)
	r := b*b + c*c
	if a*a > r {
		return "obtuse_triangle"
	} else if a*a < r {
		return "sharped_triangle"
	} else {
		return "right_triangle"
	}
}

func main() {
	s := bufio.NewScanner(os.Stdin)
	var t, r_t, s_t, o_t int = 0, 0, 0, 0
	for s.Scan() {
		var a, b, c int
		fmt.Sscan(s.Text(), &a, &b, &c)
			a, b, c = max(a, b, c)
			if (a < b + c) {
				r := find_trianges(a, b, c)
				switch r {
				case "right_triangle":
					r_t++
				case "sharped_triangle":
					s_t++
				case "obtuse_triangle":
					o_t++
				}
				t++
			}	else {
				break
			}
			
	}
	fmt.Println(t, r_t, s_t, o_t)
}

Python: import sys
import fileinput
import math
from collections import Counter
from decimal import Decimal

RADIAN180 = math.pi
ANGLE90 = 90

counter = Counter()


def is_triangle(edges):
    return edge[0] + edge[1] > edge[2] and \
           edge[1] + edge[2] > edge[0] and \
           edge[2] + edge[0] > edge[1]


def calculate_radian(edges):
    edge.sort()
    radian = []

    s = sum(edge) / 2
    s = math.sqrt(s * (s - edge[0]) * (s - edge[1]) * (s - edge[2]))
    h = 2 * s / edge[2]

    radian.append(math.asin(h / edge[0]))
    radian.append(math.asin(h / edge[1]))

    radian.append(RADIAN180 - sum(radian))

    return radian


for input_list in fileinput.input():

    edge = [int(item) for item in input_list.split(" ")]

    if is_triangle(edge):

        counter["ALL"] = counter["ALL"] + 1

        radian = calculate_radian(edge)

        max_radian = max(radian)
        max_angle = math.degrees(max_radian)

        if max_angle < ANGLE90:
            counter["ACUTE"] += 1
        elif max_angle == ANGLE90:
            counter["RIGHT"] += 1
        else:
            counter["OBTUSE"] += 1
    else:
        for garbage in sys.stdin:
            pass
        break

print(counter['ALL'], counter["RIGHT"], counter["ACUTE"], counter["OBTUSE"])

Python: def checkTriangle(a, b, c):
    if a + b > c and a + c > b and b + c > a:
        return True
    return False


def checkOct(a, b, c):
    a, b, c = [i * i for i in [a, b, c]]
    if a + b == c or a + c == b or b + c == a:
        return 0
    elif c < a + b or b < a + c or a < b + c:
        return 1
    else:
        return 2

for i in range(5):
    a, b, c = map(int, input())
    result = [0] * 3
    if checkTriangle(a, b, c):
        result[checkOct(a, b, c)] += 1
print(sum(result),*result)

Python: chokkaku,eikaku,donkaku = 0,0,0
while 1:
    abc = sorted((map(int,input().split())))
    a,b,c = abc[0],abc[1],abc[2]
    if a+b <= c:
        print(chokkaku+eikaku+donkaku,chokkaku,eikaku,donkaku)
        break
    elif a**2+b**2 > c**2:
        eikaku += 1
    elif a**2+b**2 < c**2:
        donkaku += 1
    else:
        chokkaku += 1

Python: r=a=o=0
while 1:
 l,m,n=sorted(list(map(int,input().split())))
 if l+m<=n:break
 c=l*l+m*m-n*n
 if c>0:a+=1
 elif c<0:o+=1
 else:r+=1
print(r+a+o,r,a,o)

Python: A =[] 
while True:
    try:
        A.append(sorted(list(map(int,input().split())),reverse=True))

    except:
        break
        #または、quit(),os.exit()をして止める。


def triangle_types(X):
    print(X)
    num_of_acute = 0
    num_of_right = 0
    num_of_obtuse = 0
    num_of_normal = 0
    for i in range(len(X)):
        a,b,c = [j for j in X[i]]
        ans = b**2 + c**2 - a**2
        if (a < b + c):
            num_of_normal+=1
            if (ans > 0):
                num_of_acute+=1
            elif (ans == 0):
                num_of_right+=1
            elif (ans < 0):
                num_of_obtuse+=1
            else:
                print("{} {} {} {}".format(num_of_normal,num_of_right,num_of_acute,num_of_obtuse))
                return
        else:
            print("{} {} {} {}".format(num_of_normal,num_of_right,num_of_acute,num_of_obtuse))
            return
    
if __name__ == '__main__':
    triangle_types(A)

Python: A =[] 
while True:
    try:
        A.append(sorted(list(map(int,input().split())),reverse=True))

    except:
        break
        #または、quit(),os.exit()をして止める。


def triangle_types(X):
    print(X)
    num_of_acute = 0
    num_of_right = 0
    num_of_obtuse = 0
    num_of_normal = 0
    for i in range(len(X)):
        a,b,c = [j for j in X[i]]
        ans = b**2 + c**2 - a**2
        print("a:{},b+c:{}".format(a,b+c))
        if (a <= b + c and b <= a + c and c <= a + b):
            num_of_normal+=1
            if (ans > 0):
                num_of_acute+=1
            elif (ans == 0):
                num_of_right+=1
            elif (ans < 0):
                num_of_obtuse+=1
            else:
                print("{} {} {} {}".format(num_of_normal,num_of_right,num_of_acute,num_of_obtuse))
                return
        else:
            print("{} {} {} {}".format(num_of_normal,num_of_right,num_of_acute,num_of_obtuse))
            return
    print("{} {} {} {}".format(num_of_normal,num_of_right,num_of_acute,num_of_obtuse))
    return

if __name__ == '__main__':
    triangle_types(A)

Python: #input_f = "3 4 5\n2 1 2\n6 3 4\n1 1 1\n1 2 3"
input_f = input()

counter = [0, 0, 0]

def t_check(a,b,c):
    if a + b > c:
        if b + c > a:
            if a + c > b: return True
    return False



def f_check(a_, b_, c_):
    tmp = []
    tmp.append(a_)
    tmp.append(b_)
    tmp.append(c_)
    sqrts = []
    for i in range(3):
        sqrts.append(tmp[i]**2)
    m = max(sqrts)
    s = sum(sqrts)

    print(m,s)
    
    if m == (s - m): return(0)
    if m > (s - m): return(2)
    if m < (s - m): return(1)
 
    
for i in range(int(len(input_f))):
    t = input_f.split("\n")[i].split()
    fn, sn, tn = int(t[0]),int(t[1]),int(t[2])
    if t_check(fn,sn,tn):
        counter[f_check(fn,sn,tn)] += 1
    else: 
        print(sum(counter),counter[0], counter[1], counter[2])
        break

Python: count = 0
cho,ei,don = 0,0,0
while(True):
    tmp = list(map(int, input().split()))
    tmp.sort()
    a,b,c = tmp[0],tmp[1],tmp[2]
    if a + b <= c:
        break
    else:
        a2 , b2 , c2 = a ** 2, b ** 2, c ** 2
        if a2 + b2 == c2:
            cho += 1
        elif a2 + b2 < c2:
            don += 1
        else:
            ei += 1
ans = str(cho+ei+don) + " " + str(cho) + " " + str(ei) + " " + str(don)+ "\n"
print(ans)

Python: ans = [0,0,0,0]
while True:
    tri = list(map(int,input().split()))
    tri.sort()
    a = tri[0]
    b = tri[1]
    c = tri[2]
    if a + b <= c:
        break
    ans[0] += 1
    if a**2+b**2 == c**2:
        ans[1] += 1
    elif a**2+b**2 < c**2:
        ans[3] += 1
    else:
        ans[2] += 1
print(ans[0],ans[1],ans[2],ans[3])

Python: sank=0
eik=0
tyok=0
donk=0
while True:
    p=[]
    l=input().split()
    p.append(int(l[0]))
    p.append(int(l[1]))
    p.append(int(l[2]))

    a=max(p)
    p.remove(a)
    b=p[0]
    c=p[1]
    if b+c<=a:
        break
    elif b*b+c*c==a*a:
        tyok+=1
        sank+=1
    elif b*b+c*c>a*a:
        eik+=1
        sank+=1
    else:
        sank+=1
        donk+=1

print(str(sank)+" "+str(tyok)+" "+str(eik)+" "+str(donk))