Go: package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"sort"
	"strconv"
)

var scanner = bufio.NewScanner(os.Stdin)

func nextString() string {
	scanner.Scan()
	return scanner.Text()
}

func nextInt() int {
	n, err := strconv.Atoi(nextString())
	if err != nil {
		fmt.Printf("strconv.Atoi failed: %v\n", err)
	}
	return n
}

func main() {
	scanner.Split(bufio.ScanWords)

	nQueries := nextInt()
	for i := 0; i < nQueries; i++ {
		lengths := []int{nextInt(), nextInt(), nextInt()}
		sort.Slice(lengths, func(i, j int) bool { return lengths[i] > lengths[j] })
		if math.Pow(float64(lengths[0]), 2) == math.Pow(float64(lengths[1]), 2)+math.Pow(float64(lengths[2]), 2) {
			fmt.Println("YES")
		} else {
			fmt.Println("NO")
		}
	}
}

C++: #include<iostream>
using namespace std;
int main(){
	int a,b,c,n;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>a>>b>>c;
		if((a*a)+(b*b)==(c*c)){
			cout<<"YES"<<endl;
		}
		else if((a*a)+(c*c)==(b*b)){
			cout<<"YES"<<endl;
		}
		else if((b*b)+(c*c)==(a*a)){
			cout<<"YES"<<endl;
		}
		else cout<<"NO"<<endl;
	}

	return 0;
}

C++: #include <iostream>
#include <algorithm>
using namespace std;

int main()
{
	int i,values[3];
	cin >> i;
	for(int j=0 ;j<i;j++)
	{
		cin >> values[0] >> values[1] >> values[2];
		sort(values,values+3);
		if(values[0]*values[0] + values[1]*values[1] == values[2]*values[2])
		{
			cout << "YES" << endl;
		}
		else
		{
			cout << "NO" << endl;
		}
	}
	return 0;
}

C++: #include<stdio.h>
#include<math.h>
int main(void)
{
	int k[1000][3],ct;
	int mem;
	scanf("%d",&ct);
	for(int f1=0;f1<ct;f1++){
		scanf("%d %d %d",&k[f1][0],&k[f1][1],&k[f1][2]);
	}
	for(int f=0;f<ct;f++){
		for(int f1=0;f1<3;f1++){
			for(int f2=0;f2<3;f2++){
				if(k[f][f1]>k[f][f2]){
					mem=k[f][f1];
					k[f][f1]=k[f][f2];
					k[f][f2]=mem;
				}
			}
		}
	}
	for(int f1=0;f1<ct;f1++){
		if(pow((double)k[f1][0],2)==pow((double)k[f1][1],2)+pow((double)k[f1][2],2)){
			printf("YES\n");
		}
		else{
			printf("NO\n");
		}
	}
	return 0;
}

C++: #include <iostream>
using namespace std;

int main(){
    int a, b, c;
    int n,A,B,C;
    cin >> n;
 
    for(int i=0;i<n;i++){
        cin >> a >> b >> c;       
        A = a * a;
        B = b * b;
        C = c * c;
        if(A+B==C||B+C==A||C+A==B){
            cout << "YES" << endl;
        }else{
            cout << "NO" << endl;
        }
    }
}

C++: #include <iostream>
#include <vector>
#include <math.h>

static const int DataMax = 1000;	// Max value of elements

typedef struct _triangle
{
    int count;	// Number of elements
    std::vector<int> vec[DataMax];
} triangle_t;

static void inputData(triangle_t& data, int& num)
{
    int v1, v2, v3;

    if (0x00 == &data) {
        std::cerr << "data is null" << std::endl;
        return;
    }

    std::cin >> num;
    for (int i = 0; i < num; i++) {
        std::cin >> v1 >> v2 >> v3;
        data.vec[data.count].push_back(v1);
        data.vec[data.count].push_back(v2);
	data.vec[data.count].push_back(v3);
        data.count++;
    }
}

static bool isRightTriangle(std::vector<int>& vec)
{
    if (0x00 == &vec) {
        std::cerr << "vec is null" << std::endl;
        return false;
    }

    if ((int)pow((double)vec.at(0), 2.0) + (int)pow((double)vec.at(1), 2.0) == (int)pow((double)vec.at(2), 2.0)) {
        return true;
    }

    return false;
}

int main()
{
    triangle_t triangle = {0};
    int num = 0;

    inputData(triangle, num);
    for (int i = 0; i < num; i++) {
        if (true == isRightTriangle(triangle.vec[i])) {
            std::cout << "YES" << std::endl;
        } else {
            std::cout << "NO" << std::endl;
        }
    }

    return 0;
}

C++: #include <iostream>
#include <algorithm>
using namespace std;

int main()
{
	int nNum=0;
	cin>>nNum;
	int nIn[3]={0};
	while(nNum--)
	{
		cin>>nIn[0]>>nIn[1]>>nIn[2];
		int nMax=max(max(nIn[0],nIn[1]),nIn[2]);
		if(nMax*2*nMax==nIn[0]*nIn[0]+nIn[1]*nIn[2]+nIn[2]*nIn[2])
		{
			cout<<"YES"<<endl;
		}
		else
		{
			cout<<"NO"<<endl;
		}
	}
	return 0;
}