Language: C++

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

using ll=long long;
using int64=int64_t;
const int inf=100000000;

int in(){
  int a;
  cin >> a;
  return a;
}//int型関数の受け取り

void forin(int* x,int y){
  for (int i=0;i<y;i++){
    cin >> x[i];
  }
}//(x,y) int型配列x[y]の受け取り

int intpow(int x,int y){
  double a=x,b=y;
  return pow(a,b);
}//(x,y) xをy乗

int intfabs(int x){
  double a=x;
  return fabs(a);
}//(x) xの絶対値

int fact(int x){
  if (x == 1) return 1;
  return x*fact(x-1);
}//(x) x!

int fib(int x){
  if (x <= 2) return x;
  int a[x];
  a[0]=1;
  a[1]=2;
  for (int i=2;i<x;i++){
    a[i]=a[i-1]+a[i-2];
  }
  return a[x-1];
}//(x) フィボナッチ数列のx番目

int div1(ll x){
  return x%1000000007;
}

bool ana(string x,string y){
    for(int i=0;i<10;i++) if (x[i]!=y[i]) return false;
    return true;
}

main(){
    int64 ans=0,n=in();
    vector<vector<char>> s(vector<int>(n));
    for (int i=0;i<n;i++){
        cin >> s[i];
        sort(s[i].begin,s[i].end);
    }
    for (int i=0;i<n-1;i++){
        for (int i2=i+1;i<n;i++){
            if(ana(s[i],s[i2])) ans++;
        }
    }
    cout << ans << endl;
}

Compiler output:
a.cc:55:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   55 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:57:27: warning: parentheses were disambiguated as a function declaration [-Wvexing-parse]
   57 |     vector<vector<char>> s(vector<int>(n));
      |                           ^~~~~~~~~~~~~~~~
a.cc:57:27: note: replace parentheses with braces to declare a variable
   57 |     vector<vector<char>> s(vector<int>(n));
      |                           ^~~~~~~~~~~~~~~~
      |                           -
      |                           {              -
      |                                          }
a.cc:59:19: warning: pointer to a function used in arithmetic [-Wpointer-arith]
   59 |         cin >> s[i];
      |                   ^
a.cc:59:13: error: no match for 'operator>>' (operand types are 'std::istream' {aka 'std::basic_istream<char>'} and 'std::vector<std::vector<char> >(std::vector<int>)')
   59 |         cin >> s[i];
      |         ~~~ ^~ ~~~~
      |         |         |
      |         |         std::vector<std::vector<char> >(std::vector<int>)
      |         std::istream {aka std::basic_istream<char>}
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:59:19: error: cannot bind non-const lvalue reference of type 'bool&' to a value of type 'std::vector<std::vector<char> > (*)(std::vector<int>)'
   59 |         cin >> s[i];
      |                ~~~^
/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:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'short int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(short int)(s + ((sizetype)i))' to 'short int&'
/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:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'short unsigned int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(short unsigned int)(s + ((sizetype)i))' to 'short unsigned int&'
/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:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(int)(s + ((sizetype)i))' to 'int&'
/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:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'unsigned int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(unsigned int)(s + ((sizetype)i))' to 'unsigned int&'
/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:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'long int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(long int)(s + ((sizetype)i))' to 'long int&'
/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:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'long unsigned int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(long unsigned int)(s + ((sizetype)i))' to 'long unsigned int&'
/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:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'long long int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(long long int)(s + ((sizetype)i))' to 'long long int&'
/usr/include/c++/14/istream:203:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(long long unsigned int&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  203 |       operator>>(unsigned long long& __n)
      |       ^~~~~~~~
/usr/include/c++/14/istream:203:7: note:   conversion of argument 1 would be ill-formed:
a.cc:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'long long unsigned int' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(long long unsigned int)(s + ((sizetype)i))' to 'long long unsigned int&'
/usr/include/c++/14/istream:328:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(void*&) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  328 |       operator>>(void*& __p)
      |       ^~~~~~~~
/usr/include/c++/14/istream:328:7: note:   conversion of argument 1 would be ill-formed:
a.cc:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'void*' [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |                   std::vector<std::vector<char> > (*)(std::vector<int>)
a.cc:59:19: error: cannot bind rvalue '(void*)(s + ((sizetype)i))' to 'void*&'
/usr/include/c++/14/istream:122:7: note: candidate: 'std::basic_istream<_CharT, _Traits>::__istream_type& std::basic_istream<_CharT, _Traits>::operator>>(__istream_type& (*)(__istream_type&)) [with _CharT = char; _Traits = std::char_traits<char>; __istream_type = std::basic_istream<char>]' (near match)
  122 |       operator>>(__istream_type& (*__pf)(__istream_type&))
      |       ^~~~~~~~
/usr/include/c++/14/istream:122:7: note:   conversion of argument 1 would be ill-formed:
a.cc:59:19: error: invalid conversion from 'std::vector<std::vector<char> > (*)(std::vector<int>)' to 'std::basic_istream<char>::__istream_type& (*)(std::basic_istream<char>::__istream_type&)' {aka 'std::basic_istream<char>& (*)(std::basic_istream<char>&)'} [-fpermissive]
   59 |         cin >> s[i];
      |                ~~~^
      |                   |
      |