Problem p00003 (C++)

Buggy submission (status: Time Limit Exceeded):
#include <algorithm>
#include <cassert>
#include <cctype>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <functional>
#include <iostream>
#include <iterator>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#define REP(i, m, n) for (int i = m; i < n; i++)
#define rep(i, n) for (int i = 0; i < n; i++)
#define rp(i, c) rep(i, (int)c.size())
#define fr(i, c)                                                               \
  for (__typeof((c).begin()) i = (c).begin(); i != (c).end(); i++)
#define mp make_pair
#define pb push_back
#define all(c) (c).begin(), (c).end()
#define rall(u) (u).rbegin(), (u).rend()
#define dbg(x) cerr << #x << " = " << (x) << endl
#define v_delete(a, b) (a).erase(remove((a).begin(), (a).end(), b), (a).end())
#define v_unique(a) (a).erase(unique((a).begin(), (a).end()), (a).end())
#define VV(T) vector<vector<T>>
#define init(a, b) memset((a), (b), sizeof((a)))
using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pi;
const int inf = 1 << 28;
const double INF = 1e10, EPS = 1e-9;

template <class T> int SIZE(T a) { return a.size(); }
template <class T> string IntToString(T num) {
  string res;
  stringstream ss;
  ss << num;
  return ss.str();
}
template <class T> T StringToInt(string str) {
  T res = 0;
  for (int i = 0; i < SIZE(str); i++)
    res = (res * 10 + str[i] - '0');
  return res;
}
template <class T> T gcd(T a, T b) {
  if (b == 0)
    return a;
  return gcd(b, a % b);
}
template <class T> T lcm(T a, T b) { return a / gcd(a, b) * b; }

template <class T> void input(T &a, int n) {
  for (int i = 0; i < n; ++i)
    cin >> a[i];
}
template <class T> void input(T *a, int n) {
  for (int i = 0; i < n; ++i)
    cin >> a[i];
}
typedef pair<int, int> pii;

inline bool IN(int x, int y, int w, int h) {
  return 0 <= x && x < w && 0 <= y && y < h;
}

int main() {
  int n;
  while (cin >> n, n) {
    rep(nn, n) {
      int l[3];
      rep(i, 3) { cin >> l[i]; }
      sort(l, l + 3);
      if (pow(l[2], 2.0) == pow(l[1], 2.0) + pow(l[0], 2.0)) {
        cout << "YES" << endl;
      } else {
        cout << "NO" << endl;
      }
    }
  }

  return 0;
}

Fixed submission:
#include <algorithm>
#include <cassert>
#include <cctype>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <deque>
#include <functional>
#include <iostream>
#include <iterator>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#define REP(i, m, n) for (int i = m; i < n; i++)
#define rep(i, n) for (int i = 0; i < n; i++)
#define rp(i, c) rep(i, (int)c.size())
#define fr(i, c)                                                               \
  for (__typeof((c).begin()) i = (c).begin(); i != (c).end(); i++)
#define mp make_pair
#define pb push_back
#define all(c) (c).begin(), (c).end()
#define rall(u) (u).rbegin(), (u).rend()
#define dbg(x) cerr << #x << " = " << (x) << endl
#define v_delete(a, b) (a).erase(remove((a).begin(), (a).end(), b), (a).end())
#define v_unique(a) (a).erase(unique((a).begin(), (a).end()), (a).end())
#define VV(T) vector<vector<T>>
#define init(a, b) memset((a), (b), sizeof((a)))
using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> pi;
const int inf = 1 << 28;
const double INF = 1e10, EPS = 1e-9;

template <class T> int SIZE(T a) { return a.size(); }
template <class T> string IntToString(T num) {
  string res;
  stringstream ss;
  ss << num;
  return ss.str();
}
template <class T> T StringToInt(string str) {
  T res = 0;
  for (int i = 0; i < SIZE(str); i++)
    res = (res * 10 + str[i] - '0');
  return res;
}
template <class T> T gcd(T a, T b) {
  if (b == 0)
    return a;
  return gcd(b, a % b);
}
template <class T> T lcm(T a, T b) { return a / gcd(a, b) * b; }

template <class T> void input(T &a, int n) {
  for (int i = 0; i < n; ++i)
    cin >> a[i];
}
template <class T> void input(T *a, int n) {
  for (int i = 0; i < n; ++i)
    cin >> a[i];
}
typedef pair<int, int> pii;

inline bool IN(int x, int y, int w, int h) {
  return 0 <= x && x < w && 0 <= y && y < h;
}

int main() {
  int n;
  cin >> n;
  rep(nn, n) {
    int l[3];
    rep(i, 3) { cin >> l[i]; }
    sort(l, l + 3);
    if (pow(l[2], 2.0) == pow(l[1], 2.0) + pow(l[0], 2.0)) {
      cout << "YES" << endl;
    } else {
      cout << "NO" << endl;
    }
  }

  return 0;
}