Go: package main

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

var (
	sc = bufio.NewScanner(os.Stdin)
)

func main() {
	sc.Scan()
	n, _ := strconv.Atoi(sc.Text())
	for i := 0; i < n; i++ {
		sc.Scan()
		edges := make([]int, 3, 3)
		for i, c := range strings.Split(sc.Text(), " ") {
			edges[i], _ = strconv.Atoi(c)
			edges[i] = int(math.Pow(float64(edges[i]), 2))
		}
		sort.IntSlice(edges).Sort()
		msg := "NO"
		if edges[2] == edges[0]+edges[1] {
			msg = "YES"
		}
		fmt.Println(msg)
	}
}

C++: #include <algorithm>
#include <iostream>
 
using namespace std;
 
int main () {
  int n;
  int a[3];
  cin >> n;
  for (int i = 0; i < n; i++) {
    cin >> a[0] >> a[1] >> a[2];
    sort(a, a + 3);
    if ((a[2] * a[2]) == (a[1] * a[1]) + (a[0] * a[0]))
      cout << "YES" << endl;
    else
      cout << "NO" << endl;
  }
  return 0;
}

C++: #include <iostream>
#include <cmath>
using namespace std;
int main() {
  int n;
  while (cin >> n) {
  for (int i = 0; i < n; ++i) {
    int x, y, z;
    cin >> x >> y >> z;
    int m = max(x, max(y, z));
    if (m == x) {
       if (x > y + z) cout << "YES";
       else cout << "NO";
    } else if (m == y) {
       if (y > x + z) cout << "YES";
       else cout << "NO";
    } else if (m == z) {
       if (z > x + y) cout << "YES";
       else cout << "NO";
    }
    cout << endl;
  }
  }
  return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

int main(){
	int N;
	int l1, l2, l3;
	int answer=0;
	vector<int> lines;
	cin >> N;
	for(int i=0;i<N;i++){
		cin >> l1 >> l2 >> l3;
		lines.push_back(l1);
		lines.push_back(l2);
		lines.push_back(l3);
		while(next_permutation(lines.begin(), lines.end())){
			if(pow(lines[0],2) == pow(lines[1],2) + pow(lines[2],2)) answer = 1;
		}
		if (answer == 1) cout << "YES\n";
		else cout << "NO\n";
		lines.clear();
		answer = 0;
	}
	return 0;
}

C++: #include <bits/stdc++.h>
#define forn(x, n)              for (int x = 0; x < n; x++)
#define forr(x, n)              for (int x = n; x >= 0; x--)
#define fore(x, a, b, c)        for (int x = a; x <= b; x += c)
#define forre(x, a, b, c)       for (int x = a; x >= b; x -= c)
#define clr                     cin.ignore(numeric_limits<streamsize>::max(), '\n')
#define all(container)          (container).begin(), (container).end()
#define rall(container)         (container).rbegin(), (container).rend()
#define FILL(x, val)            memset(x, val, sizeof(x))
#define sz(container)           ((int) (container).size())
#define pb                      push_back
#define eb                      emplace_back
#define fi                      first
#define se                      second
#define mod                     (ll)1000000007
#define INF                     (int)0x3f3f3f3f

using namespace std;

#ifdef LOCAL_DEFINE
    #include "../../CLionProjects/Codeforces/library/DEBUG.hpp"
#endif

template<class T> bool uin(T &a, T b) { return a > b ? (a = b, true) : false; }
template<class T> bool uax(T &a, T b) { return a < b ? (a = b, true) : false; }
int MAX() {return -INF;}
int MIN() {return INF;}
template<typename T, typename... Args>
T MAX(T a, Args... args) {return max(a, MAX(args...));}
template<typename T, typename... Args>
T MIN(T a, Args... args) {return min(a, MIN(args...));}

typedef long long ll; 
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<pair<int, int>> vpii;
typedef vector<pair<long long, long long>> vpll;


int main(void) {    
#ifdef LOCAL_DEFINE
    freopen("in.txt", "r", stdin);
#endif
    
    int t; 
    scanf("%d", &t);
    while (t--) {
        vi sides(3);
        scanf("%d %d %d", &sides[0], &sides[1], &sides[2]);
        sort(all(sides));
        if (sides[2] * sides[2] == sides[1] * sides[1] + sides[0] * sides[0]) printf("YES\n");
        else printf("NO\n");
    }

#ifdef LOCAL_DEFINE
    cerr << "Time elapsed : " << 1.0 * clock() / CLOCKS_PER_SEC << '\n';
#endif
    return 0;
}

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

C++: #include<iostream>
#include<algorithm>

using namespace std;

int n;
int x[3];
bool ans;

int main(){
	cin >> n;
	while (n--){
		cin >> x[0] >> x[1] >> x[2];
		sort(x, x + 3);
		(x[0] * x[0] + x[1] * x[1] == x[2] * x[2]) ? cout << "YES\n" : cout << "NO\n";
	}
}

C++: #include<iostream>
#include<stdio.h>
#include<math.h>
#include<vector>
#include<algorithm>
using namespace std;
int main(){
    vector<int> a;
    int n;
    cin>>n;
    while(n--){
        int t;
        for(int i=0;i<3;i++){
            cin>>t;
            a.push_back(t);
        }
        sort(a.begin(),a.end());
        if(a[0]*a[0]+a[1]*a[1]==a[2]*a[2])
            cout<<"YES"<<endl;
        else
            cout<<"NO"<<endl;
        a.clear();
    }
}

C++: #include <iostream>
#include <algorithm>
using namespace std;
int main(){
	static long long a,b[3]={0};
	cin>>a;
	for (int A=0;A<a;A++){
		cin>>b[0]>>b[1]>>b[2];
		sort(b,b+3);
		b[0]*=b[0];
		b[1]*=b[1];
		b[2]*=b[2];
		if (b[2]!=b[0]+b[1]) cout<<"No"<<endl;
		else cout<<"Yes"<<endl;
	}
	return 0;
}

C++: #include <iostream>
#include <algorithm>

using namespace std;

int main() {
  int a[3], n;
  cin >> n;
  for (int i=0; i<n; ++i) {
    cin >> a[0] >> a[1] >> a[2];
    sort(begin(a), end(a));
    if (a[0]*a[0] + a[1]*a[1] == a[2]*a[2]) {
      cout << "YES" << "\n";
    } else {
      cout << "NO" << "\n";
    }
  }
}

C++: #include <cstdio>

int main()
{
	int N, ia, ib, ic;
	int iTrueFlag[1000];

	scanf("%d",&N);

	for( int i=0;i<N;i++ ){
		scanf("%d %d %d",&ia, &ib, &ic);

		if( (ia*ia) + (ib*ib) == (ic*ic) )
			iTrueFlag[i] = 1;
		else
			iTrueFlag[i] = 0;
	}

	for( int i=0;i<N;i++ ){
		if( iTrueFlag[i] == 1)
			printf("YES\n");
		else
			printf("NO\n");
	}

	return 0;
}

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

class Triangle{
public:
	int roop, a, b, c;
	void get();
	int triangle(int, int, int);
};

void Triangle::get(){
	cin >> a >> b >> c;
}

int Triangle::triangle(const int, const int, const int){
	if ((a*a + b*b == c*c) || (a*a + c*c == b*b) || (b*b + c*c == a*a)){
		return (1);
	}
	else{
		return (2);
	}
}

int main(){
	Triangle TR;

	int i, *flag;
	cin >> TR.roop;
	flag = new int[TR.roop];
	for (i = 0; i < TR.roop; i++){
		TR.get();
		flag[i] = TR.triangle(TR.a, TR.b, TR.c);
	}
	for (i = 0; i < TR.roop; i++){
		if (flag[i] == 1){
			cout << "YES" << endl;
		}
		else{
			cout << "NO" << endl;
		}
	}

	return (0);
}

C++: #include <iostream>
#include <fstream>
#include <string>
#include <cmath>
#include <cstdlib>

int main(int argc, char *argv[]){
	//std::ifstream datafile(argv[1]); //input datafile
	std::string str;
	int num[3] = {}; //a, b, c
	int N; //N
	int tmp;

	// if(datafile.fail()){
	// 	std::cout << "error : can't open this file." << std::endl;
	// 	exit(1);
	// }

	//read N
	std::getline(std::cin, str);
	sscanf(str.c_str(), "%d", &N);

	if(N < 0 || N > 1000){
		std::cout << "error : out of constraints" << std::endl;
		exit(1);
	}

	//read dataset
	while(std::getline(std::cin, str)){
		sscanf(str.c_str(), "%d%d%d", &num[0], &num[1], &num[2]);

		for(size_t i = 0; i < 3; i++){
			if(num[i] < 1 || num[i] > 1000){
				std::cout << "error : out of constraints" << std::endl;
				exit(1);
			}
		}

		//bubble sort
		for(size_t i = 0; i < 2; i++){
			for(size_t j = 2; j > i; j--){
				if(num[j-1] > num[j]){
					tmp = num[j-1];
					num[j-1] = num[j];
					num[j] = tmp;
				}
			}
		}

		//Pythagorean theorem
		if(std::pow(num[2], 2) == std::pow(num[0], 2) + std::pow(num[1], 2)){
			std::cout << "YES" << std::endl;
		}else{
			std::cout << "NO" << std::endl;
		}
	}

	return 0;
}