Language: C++

#include <bits/stdc++.h>
typedef long long LL;
using namespace std;

int main(){
  vector<int> a(3);
  int cnt[4] = {0, 0, 0, 0};
  while (cin >> a[0] >> a[1] >> [2]) {
    if (a[0] + a[1] > a[2] && a[0] + a[2] > a[1] && a[1] + a[2] > a[0]) {
      cnt[0] ++;
      sort(a.begin(), a.end());
      if (a[0] * a[0] + a[1] * a[1] > a[2] * a[2])  cnt[1] ++;
      if (a[0] * a[0] + a[1] * a[1] == a[2] * a[2]) cnt[2] ++;
      if (a[0] * a[0] + a[1] * a[1] < a[2] * a[2])  cnt[3] ++;
    }
  }

  cout << cnt[0];
  cout << " " << cnt[1];
  cout << " " << cnt[2];
  cout << " " << cnt[3];
  cout << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:34: error: expected identifier before numeric constant
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                  ^
a.cc: In lambda function:
a.cc:8:36: error: expected '{' before ')' token
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                    ^
a.cc: In function 'int main()':
a.cc:8:30: error: no match for 'operator>>' (operand types are 'std::basic_istream<char>::__istream_type' {aka 'std::basic_istream<char>'} and 'main()::<lambda()>')
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                              ^~ ~~~
      |                                 |
      |                                 main()::<lambda()>
In file included from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127,
                 from a.cc:1:
/usr/include/c++/14/istream:170:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(bool&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  170 |       operator>>(bool& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:170:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'void (*)()'
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note:   after user-defined conversion: 'constexpr main()::<lambda()>::operator void (*)()() const'
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^
/usr/include/c++/14/istream:174:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(short int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  174 |       operator>>(short& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:174:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: invalid user-defined conversion from 'main()::<lambda()>' to 'short int&' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^
a.cc:8:33: note:   no known conversion from 'void (*)()' to 'short int'
a.cc:8:33: error: invalid conversion from 'void (*)()' to 'short int' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
      |                                 |
      |                                 void (*)()
a.cc:8:33: error: conversion to non-const reference type 'short int&' from rvalue of type 'void (*)()' [-fpermissive]
/usr/include/c++/14/istream:177:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(short unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  177 |       operator>>(unsigned short& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:177:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: invalid user-defined conversion from 'main()::<lambda()>' to 'short unsigned int&' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^
a.cc:8:33: note:   no known conversion from 'void (*)()' to 'short unsigned int'
a.cc:8:33: error: invalid conversion from 'void (*)()' to 'short unsigned int' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
      |                                 |
      |                                 void (*)()
a.cc:8:33: error: conversion to non-const reference type 'short unsigned int&' from rvalue of type 'void (*)()' [-fpermissive]
/usr/include/c++/14/istream:181:7: note: candidate: 'std::basic_istream<_CharT, _Traits>& std::basic_istream<_CharT, _Traits>::operator>>(int&) [with _CharT = char; _Traits = std::char_traits<char>]' (near match)
  181 |       operator>>(int& __n);
      |       ^~~~~~~~
/usr/include/c++/14/istream:181:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: invalid user-defined conversion from 'main()::<lambda()>' to 'int&' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^
a.cc:8:33: note:   no known conversion from 'void (*)()' to 'int'
a.cc:8:33: error: invalid conversion from 'void (*)()' to 'int' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
      |                                 |
      |                                 void (*)()
a.cc:8:33: error: conversion to non-const reference type 'int&' from rvalue of type 'void (*)()' [-fpermissive]
/usr/include/c++/14/istream:184:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  184 |       operator>>(unsigned int& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:184:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: invalid user-defined conversion from 'main()::<lambda()>' to 'unsigned int&' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^
a.cc:8:33: note:   no known conversion from 'void (*)()' to 'unsigned int'
a.cc:8:33: error: invalid conversion from 'void (*)()' to 'unsigned int' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
      |                                 |
      |                                 void (*)()
a.cc:8:33: error: conversion to non-const reference type 'unsigned int&' from rvalue of type 'void (*)()' [-fpermissive]
/usr/include/c++/14/istream:188:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  188 |       operator>>(long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:188:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: invalid user-defined conversion from 'main()::<lambda()>' to 'long int&' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^
a.cc:8:33: note:   no known conversion from 'void (*)()' to 'long int'
a.cc:8:33: error: invalid conversion from 'void (*)()' to 'long int' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
      |                                 |
      |                                 void (*)()
a.cc:8:33: error: conversion to non-const reference type 'long int&' from rvalue of type 'void (*)()' [-fpermissive]
/usr/include/c++/14/istream:192:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  192 |       operator>>(unsigned long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:192:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: invalid user-defined conversion from 'main()::<lambda()>' to 'long unsigned int&' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^
a.cc:8:33: note:   no known conversion from 'void (*)()' to 'long unsigned int'
a.cc:8:33: error: invalid conversion from 'void (*)()' to 'long unsigned int' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
      |                                 |
      |                                 void (*)()
a.cc:8:33: error: conversion to non-const reference type 'long unsigned int&' from rvalue of type 'void (*)()' [-fpermissive]
/usr/include/c++/14/istream:199:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  199 |       operator>>(long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:199:7: note:   conversion of argument 1 would be ill-formed:
a.cc:8:33: error: invalid user-defined conversion from 'main()::<lambda()>' to 'long long int&' [-fpermissive]
    8 |   while (cin >> a[0] >> a[1] >> [2]) {
      |                                 ^~~
a.cc:8:33: note: candidate is: 'constexpr main()::<lambda()>::operator void (*)()() const' (near match)
    8 |   while (cin >> a[0] >> a[1] >> [2