criyle/codenet-compile-errors huggingface dataset:
Language: C

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

int main()
{
	string s;
	cin >> s;
	int n=s.size()-1;
	
	if (s[n]=='s')
	{
		s+="es";
	}
	else 
	{
		s+="s";
	}
	
	cout << s << endl;
	return 0;
}

Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;

public class Main{
  public static void main(String args[]){
    Scanner sc=new Scanner(System.in);
    String data=sc.next();
	String last=data.subString(data.length()-1,data.length());
    if(last=="s"){
	  System.out.println(last+"es");
    }else{
      System.out.println(last+"s");
    }
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
	String last=data.subString(data.length()-1,data.length());
	                ^
  symbol:   method subString(int,int)
  location: variable data of type String
1 error
Language: C++

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

int main(){
  string S;
  cin >> S;
  if(S[S.end()] == S)
  cout << S << "es" << endl;
  else cout << S << endl; 
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: no match for 'operator[]' (operand types are 'std::string' {aka 'std::__cxx11::basic_string<char>'} and 'std::__cxx11::basic_string<char>::iterator')
    8 |   if(S[S.end()] == S)
      |       ^
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1247:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::const_reference std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator[](size_type) const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; const_reference = const char&; size_type = long unsigned int]'
 1247 |       operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT
      |       ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:1247:29: note:   no known conversion for argument 1 from 'std::__cxx11::basic_string<char>::iterator' to 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
 1247 |       operator[] (size_type __pos) const _GLIBCXX_NOEXCEPT
      |                   ~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:1265:7: note: candidate: 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::reference std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::operator[](size_type) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; reference = char&; size_type = long unsigned int]'
 1265 |       operator[](size_type __pos)
      |       ^~~~~~~~
/usr/include/c++/14/bits/basic_string.h:1265:28: note:   no known conversion for argument 1 from 'std::__cxx11::basic_string<char>::iterator' to 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'}
 1265 |       operator[](size_type __pos)
      |                  ~~~~~~~~~~^~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define ts  ll t;cin>>t; while(t--)
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL);
#define fr ll n,i;cin>>n; ll a[n+1];for(i=0;i<n;i++)
#define ln cout<<"\n"; 
#define maxn 1000000


int main() {
	fast
	string s;
	cin>>s;
	ll k=s.size();
	if(s[k-1]=='s')cout<<s<<es;
	else cout<<s<<s;
	
	    

	return 0;}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:33: error: 'es' was not declared in this scope; did you mean 's'?
   16 |         if(s[k-1]=='s')cout<<s<<es;
      |                                 ^~
      |                                 s
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
    
  string a;
    

  int b=a.size();
  char c=a.at(b-1);
  if(c=="s")
    cout<<a<<"es";
  else
    cout<<a<<"s";
  
 return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:7: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |   if(c=="s")
      |      ~^~~~~
Language: C++

#include<bots/stdc++.h>
using namespace std;
int main(){string p;cin>>p;char q=p[p.size()];
       cout<<p;if(q=='s')cout<<'e';cout<<'s'<<endl;}
    

Compiler output:
a.cc:1:9: fatal error: bots/stdc++.h: No such file or directory
    1 | #include<bots/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    String s=sc.next();
    char[] c=s.toCharArray();
    if(c[c.length()-1]=='s'){
      System.out.println(s+"es");
    }else{
      System.out.println(s+"s");
    }
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
    if(c[c.length()-1]=='s'){
          ^
  symbol:   method length()
  location: variable c of type char[]
1 error
Language: C++

#include <bits/stdc++.h>
#define nl endl
#define dbg(a) cout << #a << "=" << a << endl
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define ll long long
#define md 1000000007

using namespace std;

int solve()
{
    string s;
    cin>>s;
    if(s.back()=='s') 
    {
        s+="es";
    }
    else s.pb('s');
    cout<<s<<endl;
    return;
}

int main()
{
    fast;
    solve();
    return 0;
}

Compiler output:
a.cc: In function 'int solve()':
a.cc:18:12: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'pb'
   18 |     else s.pb('s');
      |            ^~
a.cc:20:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
   20 |     return;
      |     ^~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
	string a;
	cin>>a;
	int l=strlen(a);
	cout<<a;
	if(a[l-1]!='s'){
		cout<<'s';
	}
	else{
		cout<<"es";
	}
	return 0;
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:6:22: error: cannot convert 'std::string' {aka 'std::__cxx11::basic_string<char>'} to 'const char*'
    6 |         int l=strlen(a);
      |                      ^
      |                      |
      |                      std::string {aka std::__cxx11::basic_string<char>}
In file included from /usr/include/c++/14/cstring:43,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:121,
                 from a.cc:1:
/usr/include/string.h:407:35: note:   initializing argument 1 of 'size_t strlen(const char*)'
  407 | extern size_t strlen (const char *__s)
      |                       ~~~~~~~~~~~~^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
 
int man()
{
  string str;
  cin>>str;
  int n = str.size();
  if(str[n-1] == 's')
  {
    str += "es";
  }
  else
  {
    str += "s";
  }
  cout<<str<<"\n";
  return 0;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

import sys

def dump(x):
    print(x, file=sys.stderr)


s = input()
if s[-1] == 's' :
    print(s + 'es')
else:
    print(s+'s')







Compiler output:
a.cc:9:15: warning: multi-character character constant [-Wmultichar]
    9 |     print(s + 'es')
      |               ^~~~
a.cc:1:1: error: 'import' does not name a type
    1 | import sys
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

//#include "/Users/HIMANSHU PANDEY/Desktop/coding/stdc++.h"
#include<bits/stdc++.h>
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define mp make_pair
#define ins insert
#define sb substr
#define con continue
#define ub upper_bound
#define lb lower_bound
#define sp fixed<<setprecision
#define bp __builtin_popcountll
#define pll pair<ll,ll>
#define pld pair<ld,ld>
using namespace std;
 
ll power(ll x, ll y);
ll mpower(ll x, ll y, ll p);
ll modInv(ll a, ll m);
ll gcdExtended(ll a, ll b, ll *x, ll *y);
bool isPrime(ll n);
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    ll t,i,j,k,l,h,p,q,r,x,y,z,a,b,c,d,f,n,m,M=1000000007;
    char ch,ch2,ch3;
    string s,s1,s2,s3;
     t=1;
    //cin>>t;
    while(t--)
    {
        vector<ll> v,w;
        unordered_map<ll,ll> N;
        set<ll> S,SS;
		cin>>s;
		n=s.length();
		if(s[n-1]=='s')
		{
		    s.push_back('e');
		    s.pb('s')
		}
		else
		{
		    s.pb('s');
		}
		cout<<s;
    }
    return 0;
}
 
ll modInv(ll a, ll m)
{
    ll x, y;
    ll g = gcdExtended(a, m, &x, &y);
    ll res = (x%m + m) % m;
    return res;
}
 
ll gcdExtended(ll a, ll b, ll *x, ll *y){
    if (a == 0){
        *x = 0, *y = 1;
        return b;
    }
    ll x1, y1;
    ll gcd = gcdExtended(b%a, a, &x1, &y1);
    *x = y1 - (b/a) * x1;
    *y = x1;
    return gcd;
}
 
ll mpower(ll x, ll y, ll p){
    ll res = 1;
    x = x % p;
    while(y > 0){
        if(y & 1) res = (res*x) % p;
        y = y>>1;
        x = (x*x) % p;
    }
    return res;
}
 
ll power(ll x, ll y){
    ll res = 1;
    while (y > 0){
        if (y & 1) res = res*x;
        y = y>>1;
        x = x*x;
    }
    return res;
}
 
bool isPrime(ll n){
    if (n <= 1)  return false;
    if (n <= 3)  return true;
    if (n%2 == 0 || n%3 == 0) return false;
    ll p=sqrt(n);
    for(int i=5;i<=p;i=i+6)
        if (n%i == 0 || n%(i+2) == 0)
            return false;
    return true;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:45:30: error: expected ';' before '}' token
   45 |                     s.pb('s')
      |                              ^
      |                              ;
   46 |                 }
      |                 ~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  string s;
  cin>>s;
  if(s[s.size]=='s'){
    cout<<s<<"es";}
  else cout<<s<<s;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:7: error: invalid use of non-static member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
    6 |   if(s[s.size]=='s'){
      |       ^
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1076:7: note: declared here
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
Language: Java

import java.util.*;

public class Main{
  public static void main(String args[]){
    Scanner sc=new Scanner(System.in);
    String data=sc.next();
	String last=data.subString(data.length-1,data.length);
    if(last=="s"){
	  System.out.println(last+"es");
    }else{
      System.out.println(last+"s");
    }
  }
}

Compiler output:
Main.java:7: error: cannot find symbol
	String last=data.subString(data.length-1,data.length);
	                               ^
  symbol:   variable length
  location: variable data of type String
Main.java:7: error: cannot find symbol
	String last=data.subString(data.length-1,data.length);
	                                             ^
  symbol:   variable length
  location: variable data of type String
2 errors
Language: C++

#include <bits/stdc++.h>
#include <atcoder/all>
#pragma GCC optimize("Ofast")
#define rep(i,n) for(int i = 0, i_len = n; (i) < (i_len); ++(i))
#define repp(i,n) for(int i = 1, i_len = n; (i) <= (i_len); ++(i))
#define per(i,n) for(int i = n-1; (i) >= 0; --(i))
#define perr(i,n) for(int i = n; (i) > 0; --(i))
#define sz(x) ((int)(x).size())
#define popcnt __builtin_popcount
#define pb push_back
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).begin(),(v).end(),greater<>()
#define debug(x) cerr << #x << ':' << x << '\n'
#define Pi 3.1415926535
#define MOD 1000000007
using namespace std;
using ll = long long;
using pint = pair<int,int>;
using itn = int;
using vint = vector<int>;
template<class T,class S> inline bool chmax(T& a, S b){if(a<b){a = b; return true;} return false;}
template<class T,class S> inline bool chmin(T& a, S b){if(a>b){a = b; return true;} return false;}
template<class T> T gcd(T a, T b){return b?gcd(b,a%b):a;}
template<class T> T lcm(T a, T b){return a*b/gcd(a,b);}
void yes(){cout << "Yes" << '\n';}
void no(){cout << "No" << '\n';}

int solve(){
    string s; cin >> s;
    cout << s << (s[s.size() - 1] == 's' ? "es" : "s") << endl;
    return 0;
}

int main(){
    cin.tie(0);
    cout << fixed << setprecision(10);
    ios::sync_with_stdio(false);
    solve();
    return 0;
}


Compiler output:
a.cc:2:10: fatal error: atcoder/all: No such file or directory
    2 | #include <atcoder/all>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<bits/stdc++.h>
#define LL long long int
using namespace std;
int main()
{
	ios_base::sync_with_stdio(false);
    cin.tie(NULL);
	string s;
	cin>>s;
	if(s[s.length()-1]=="s")
	{
		cout<<s<<"es";
	}
	else
	{
		cout<<s<<"s";
	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:27: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |         if(s[s.length()-1]=="s")
Language: C++


// Problem : A - Plural Form
// Contest : AtCoder - AtCoder Beginner Contest 179
// URL : https://atcoder.jp/contests/abc179/tasks/abc179_a
// Memory Limit : 1024 MB
// Time Limit : 2000 ms
// Powered by CP Editor (https://github.com/cpeditor/cpeditor)


#include<bits/stdc++.h>
#define 	ll		    long long
#define 	rep(i,a,n)  for(int i=a;i<n;i++)
#define		rof(i,a,n)	for(int i=a;i>=n;i--)
#define 	MOD 		1000000007
#define 	ff 			first
#define 	ss 			second
#define 	pb 			push_back
#define 	all(x) 		(x).begin(),(x).end()
#define 	dg(x)		cerr << x << endl;
#define 	endl		"\n"


using namespace std;
const int N = 1e5 + 5;
ll ar[N];

void solve(){
	string str;
	cin >> str;
	
	int ln = str.length();
	if(str[ln -1]) == 's')
		str += "es";
	else
		str += 's';
	cout << str;
}

int main(){

    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t=1;
    //cin>>t;
    while(t--){
        solve();
        cout<<endl;
    }
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:32:24: error: expected primary-expression before '==' token
   32 |         if(str[ln -1]) == 's')
      |                        ^~
Language: C++

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

#define INF_LL (int64)1e18
#define INF (int32)1e9
#define REP(i, n) for(int64 i = 0;i < (n);i++)
#define FOR(i, a, b) for(int64 i = (a);i < (b);i++)
#define all(x) x.begin(),x.end()
#define fs first
#define sc second

using int32 = int_fast32_t;
using uint32 = uint_fast32_t;
using int64 = int_fast64_t;
using uint64 = uint_fast64_t;
using PII = pair<int32, int32>;
using PLL = pair<int64, int64>;

const double eps = 1e-10;

template<typename A, typename B>inline void chmin(A &a, B b){if(a > b) a = b;}
template<typename A, typename B>inline void chmax(A &a, B b){if(a < b) a = b;}

template<typename T>
vector<T> make_v(size_t a){return vector<T>(a);}

template<typename T,typename... Ts>
auto make_v(size_t a,Ts... ts){
	return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));
}

template<typename T,typename U,typename... V>
typename enable_if<is_same<T, U>::value!=0>::type
fill_v(U &u,const V... v){u=U(v...);}

template<typename T,typename U,typename... V>
typename enable_if<is_same<T, U>::value==0>::type
fill_v(U &u,const V... v){
	for(auto &e:u) fill_v<T>(e,v...);
}

struct s1 {
  static int64 op(int64 a, int64 b) { return max(a, b); }
  static int64 e() { return -INF_LL; }
  static int64 mapping(int64 l, int64 r) { return max(l, r); };
  static int64 composition(int64 l, int64 r) { return max(l, r); };
  static int64 id() { return -INF_LL; };
};

int main(void) {
  cin.tie(0);
  ios::sync_with_stdio(false);

//  auto op1 = [](int64 a, int64 b) -> int64 {
//    return max(a, b);
//  };
//  auto e = []() { return -INF_LL; };
//  auto mapping = [](int64 l, int64 r) { return max(l, r); };
//  auto composition = [](int64 l, int64 r) { return max(l, r); };
//  auto id = []() { return -INF_LL; };

  string s;
  cin >> s;
  if (s.back() == 's') s += "es";
  else s += "s";
  cout << s << endl;


}



Compiler output:
a.cc:4:17: error: 'atcoder' is not a namespace-name
    4 | using namespace atcoder;
      |                 ^~~~~~~
Language: C++

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		String f = sc.nextLine();
		if(f.substring(f.length() - 1, f.length()).equals("s")){
			System.out.println(f + "es");
		}else{
			System.out.println(f + "s");
		}
		
		
		
	}
}

Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.util.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: expected unqualified-id before 'public'
    2 | public class Main {
      | ^~~~~~
Language: C

#include <bits/stdc++.h>

using namespace std;

typedef long long ll; 
typedef pair<int, int> pii; 
typedef pair<ll, ll> pll; 

int main() {
    char str[1112];

    scanf("%s", str);

    int tam = strlen(str);

    if (str[tam-1] == 's')
        printf("%ses\n", str);
    else
        printf("%ss\n", str);

    return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define repl(i,l,r) for(int i=l;i<r;i++)
using ll = long long;
const int inf=2e9+10;
const ll MOD=1e9+7;
const ll INF=9e18+10;
const int dx[4]={1,0,-1,0};
const int dy[4]={0,1,0,-1};

int main(){
        string s;cin>>s;
        cout<<s;
        if(s.[s.size()-1]=='s')cout<<"e"
        cout<<endl;
        return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:14: error: expected unqualified-id before '[' token
   15 |         if(s.[s.size()-1]=='s')cout<<"e"
      |              ^
a.cc:15:41: error: expected ';' before 'cout'
   15 |         if(s.[s.size()-1]=='s')cout<<"e"
      |                                         ^
      |                                         ;
   16 |         cout<<endl;
      |         ~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main() {
  String S;
  cin>>S;
  if(S.at(S.size()-1)=='s'){cout<<S<<"es"<<endl;}else{cout<<S<<"s"<<endl;}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'String' was not declared in this scope
    6 |   String S;
      |   ^~~~~~
a.cc:7:8: error: 'S' was not declared in this scope
    7 |   cin>>S;
      |        ^
Language: C++

//Radhe Radhe
#include<bits/stdc++.h>
#define godspeed  ios_base:: sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define mod 1000000007
#define ll long long
#define ld long double
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define en '\n'
#define rep(i,n)    for(ll i=0; i<n; i++)
#define rep1(i,a,b)    for(ll i=a; i<=b; i++)
#define repVect(i,n)    for(ll i=0; i<sum.size(); i++)
#define fixed cout.setf(ios::fixed);
#define Precise cout.precision(7);
#define yes cout<<"YES"<<'\n'
#define no cout<<"NO"<<'\n'
using namespace std;

int main()
{
    godspeed
   // ll  t,n,m,x,i,j,k,l;
    string s;
    cin>>s;
    if(s[s.length()-1]=='s')
        cout<<s.substr(0,s.length()-1)<<"es"<<en;
    else 
    cout<<s<<"s"<<en;
    
    
    
    cout<< <<en;
    /*
    ll a[n],sum=0;
    for(i=0; i<n; i++)
        cin>>a[i];

    for(i=0; i<n-1; i++)
    for(j=i+1; j<n; j++)
   {
       sum+=mulmod(a[i],a[j],mod);
   }
   */


    return 0;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:34:12: error: expected primary-expression before '<<' token
   34 |     cout<< <<en;
      |            ^~
Language: C++

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

int main(){
  #include <bits/stdc++.h>
#define ll long long
using namespace std;

int main(){
    string s;
    cin >> s;
    int n = s.size();

    if(s[n-1] == 's'){
        s += "es";
    } else {
        s += "s";
    }
    cout << s;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:9: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   10 | int main(){
      |         ^~
a.cc:10:9: note: remove parentheses to default-initialize a variable
   10 | int main(){
      |         ^~
      |         --
a.cc:10:9: note: or replace parentheses with braces to value-initialize a variable
a.cc:10:11: error: a function-definition is not allowed here before '{' token
   10 | int main(){
      |           ^
a.cc:21:2: error: expected '}' at end of input
   21 | }
      |  ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
#define fastio() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define loop(i,a,b) for(ll i=a;i<b;i++)
#define loope(i,a,b) for(ll i=a;i<=b;i++)
#define test() ull t;cin>>t;while(t--)
#define pll pair<ll,ll>
#define puu pair<ull,ull>
#define f first
#define s second
#define pb push_back
#define mkp make_pair
#define ins insert
#define Vint vector<int>
#define Vll vector<ll>
#define Vull vector<ull>
#define nl cout<<endl
#define sp cout<<" "
#define MOD 1000000007
#define all(x) x.begin(),x.end()
int dx[] = {1,0,-1,0};
int dy[] = {0,1,0,-1};


int main() 
{
	// ios::sync_with_stdio(0);
	// cin.tie(0);
	// cout.tie(0);
	
	string s;
	cin>>s;
	ll n = s.size();
	if(s[n-1]=='s')
		s+="es";
	else
		s+='s';
	cout<<s;
}#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ull;
typedef long long ll;
#define fastio() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define loop(i,a,b) for(ll i=a;i<b;i++)
#define loope(i,a,b) for(ll i=a;i<=b;i++)
#define test() ull t;cin>>t;while(t--)
#define pll pair<ll,ll>
#define puu pair<ull,ull>
#define f first
#define s second
#define pb push_back
#define mkp make_pair
#define ins insert
#define Vint vector<int>
#define Vll vector<ll>
#define Vull vector<ull>
#define nl cout<<endl
#define sp cout<<" "
#define MOD 1000000007
#define all(x) x.begin(),x.end()
int dx[] = {1,0,-1,0};
int dy[] = {0,1,0,-1};


int main() 
{
	// ios::sync_with_stdio(0);
	// cin.tie(0);
	// cout.tie(0);
	
	string s;
	cin>>s;
	ll n = s.size();
	if(s[n-1]=='s')
		s+="es";
	else
		s+='s';
	cout<<s;
}

Compiler output:
a.cc:41:2: error: stray '#' in program
   41 | }#include <bits/stdc++.h>
      |  ^
a.cc:41:3: error: 'include' does not name a type
   41 | }#include <bits/stdc++.h>
      |   ^~~~~~~
a.cc:63:5: error: redefinition of 'int dx []'
   63 | int dx[] = {1,0,-1,0};
      |     ^~
a.cc:23:5: note: 'int dx [4]' previously defined here
   23 | int dx[] = {1,0,-1,0};
      |     ^~
a.cc:64:5: error: redefinition of 'int dy []'
   64 | int dy[] = {0,1,0,-1};
      |     ^~
a.cc:24:5: note: 'int dy [4]' previously defined here
   24 | int dy[] = {0,1,0,-1};
      |     ^~
a.cc:67:5: error: redefinition of 'int main()'
   67 | int main()
      |     ^~~~
a.cc:27:5: note: 'int main()' previously defined here
   27 | int main()
      |     ^~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  string s;
  cin>>s;
  if(s[s.size()-1]!="s")
    cout<<s<<"s"<<endl;
  else
    cout<<s<<"es"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:19: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    6 |   if(s[s.size()-1]!="s")
Language: C++

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

int man()
{
  string str;
  cin>>str;
  int n = str.size();
  if(str[n-1] == 's')
  {
    str += "es";
  }
  else
  {
    str += "s";
  }
  cout<<str<<"\n";
}

Compiler output:
a.cc: In function 'int man()':
a.cc:18:1: warning: no return statement in function returning non-void [-Wreturn-type]
   18 | }
      | ^
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C++

#include<bits/stdc++.h>
#define fill(arr,c) memset(arr,c,sizeof(arr))
#define perm(r) next_permutation(all(r))
//it gives bool value ans permute the string lexoggraphically
#define sortdesc greater<int>()
#define ll long long int 
//std::setfill('0') << std::setw(5) << 25; it adds leaing zeroes;
#define f(i,a) for(int i=0;i<a;i++)
#define fo(i,a) for(int i=1;i<=a;i++)
#define foo(i,x,n,c) for(ll i=x;i<n;i+=c)
#define foi(i,x,n,c) for(ll i=x;i>=n;i+=c)
#define fauto(i,m) for(auto i:m)
#define forall(a) for( auto itr=a.begin();itr!=a.end();itr++)
#define ld long double
#define in push_back
#define mll map<ll,ll>
#define mcl map<char,ll>
#define msl map<string,ll>
#define vi vector<int >
#define vl vector<ll >
#define vp vector< pair<int,int> >
#define vs vector <string> 
#define vc vector <char> 
#define o(a) cout<<a
#define os(a) cout<<a<<" "
#define en cout<<"\n";
#define testcase ll t ;cin>>t; while(t--)
#define ff first
#define ss second
#define pl pair<ll,ll>
#define pi pair<int,int>
#define all(a) (a).begin(), (a).end()

#define sz(a)  (a).size()
#define prec(n) fixed<<setprecision(n)
#define mp make_pair
#define bitcount  __builtin_popcountll
#define imin o("imin");en;
using namespace std;
bool comp(const pair<int,int> &a , const pair<int,int> &b){
    if(a.first == b.first)  return a.second < b.second;
     return a.first < b.first;
}
bool comps(const pair<int,int> &a , const pair<int,int> &b){
    if(a.second == b.second)  return a.first< b.first;
     return a.second < b.second;
}
//ll pi=acos(0.0)*2;
void fastio()
{
    	ios::sync_with_stdio(0);
cin.tie(0);

}
void inout()
{

    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);

     freopen("output.txt", "w", stdout);
     #endif
}

int main()
{

string s;
cin>>s;
if(s[sz(s)-1]=='s')
s+="es";
else
s+="s";
o(s);
en;
return 0;
}
box


Compiler output:
a.cc:78:1: error: 'box' does not name a type
   78 | box
      | ^~~
Language: C++

#define errOut(s) \
  { std::cerr << __LINE__ << ":" << #s << ":" << (s) << std::endl; }

#include <bits/stdc++.h>

#include <atcoder/all>
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Weverything"
//#include <boost/multi_array.hpp>
//#include <boost/optional.hpp>
//#include <boost/range/adaptors.hpp>
//#include <boost/range/algorithm.hpp>
//#include <boost/range/irange.hpp>
#pragma clang diagnostic pop

using namespace std;

std::string solve(std::string s) {
  if (s[s.length() - 1]== 's') {
    return s + "es";
  }
  return s + "s";
}

int main() {
  std::cin.tie(nullptr);
  std::ios::sync_with_stdio(false);
  std::string s;
  std::cin >> s;
  auto const res = solve(s);
  std::cout << res << std::endl;
  return 0;
}


Compiler output:
a.cc:6:10: fatal error: atcoder/all: No such file or directory
    6 | #include <atcoder/all>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
    string a;
    
 int b=a.size();
  char c=a.at(b-1);
  if(c==s)
    cout<<a<<"es";
  else
    cout<<a<<"s";
  
 return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 's' was not declared in this scope
    9 |   if(c==s)
      |         ^
Language: C++

#define _CRT_SECURE_NO_WARNINGS
#include<bits/stdc++.h>
#include <unordered_map>
//#include"testlib.h"
#define endl "\n"
#define all(v) v.begin(),v.end()
#define allr(s) s.rbegin(),s.rend()
#define RT(s) return cout<<s,0
#define sz(s)    (int)(s.size())
#define PI acos(-1)
#define EPS 1e-8
#define watch(x) cout << (#x)<<" = "<<x<<endl
using namespace std;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
int dy[] = { 1, -1, 0, 0, -1, 1, 1, -1 };
int dx[] = { 0, 0, 1, -1, 1, -1, 1, -1 };
void file() {
#ifndef ONLINE_JUDGE
	freopen("in.txt", "r", stdin);
	//freopen("out.txt", "w", stdout);
#else
	//freopen("street.in", "r", stdin);
	//freopen("out.txt", "w", stdout);
#endif
}
void fast() {
	std::ios_base::sync_with_stdio(0);
	cin.tie(NULL);
}

int main() {
	file();
	fast();
	string str; cin >> str;
	if (str.back() == 's')
		str.push_back('s');
	else str.push_back("es");
	cout << str << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:28: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
   42 |         else str.push_back("es");
      |                            ^~~~
      |                            |
      |                            const char*
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:2:
/usr/include/c++/14/bits/basic_string.h:1572:24: note:   initializing argument 1 of 'void std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::push_back(_CharT) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]'
 1572 |       push_back(_CharT __c)
      |                 ~~~~~~~^~~
Language: C++

#include<iostream>
using namespace std;
#include<string>

int main() {
  string str;
  cin >> str;
  if(str.at(str.length()-1) == "s") {
    cout << str << "es" << endl;
  } else {
    cout << str << "s" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:29: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    8 |   if(str.at(str.length()-1) == "s") {
      |      ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
Language: C++

#include <bits/stdc++.h>
#define pb push_back
#define ll long long
#define mp make_pair
#define si short int
#define speed ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define pill pair<ll,ll>
#define f first
#define s second
#define pilc pair<ll,char>
#define all(a) (a).begin(),(a).end()
#define rep(s,e,step) for(int i = (s); i < (e) ; i += step)
#define vrep(s,e,step) for(int j = (s); j < (e) ; j += step)
#define ex exit(0) 
#define sz(a) (a).size()
#define triple pair<pill, ll>
#define pinode pair<node*, node*>
#define quadra pair<pill, pill>
using namespace std;
 
/*
 tips :
 Sqrt opt
 Binary search
 Try to find the easiest solution
 Recursiya
 FUCK YOU pishi kod akuratnee daun yobani
 sdohni v adu nahui blyat' y ub'uy tebya
 esli ti blyad' budesh pisat' kod gryaznim
 to ya tebya v rot viebu
*/
 
const ll N = 1E6 + 10;
const ll M = 3e3 + 10;
const ll big = 1e18;
const ll shift = 1000;
const ll block = 500;
const ll has = 200123140004043;

const ll mod = 998244353;

mt19937 srnd(chrono::steady_clock::now().time_since_epoch().count()); 

ll n;
ll cnt[N];
ll c = 0;

ll bp(ll a, ll b) {
	ll c = 1;
	while(b) {
		if(b&1)
			c = c * a % mod;
		b >>= 1;
		a = a * a % mod;
	}
	return c;
}
ll inv(ll a) {
 	return bp(a, mod - 2);
}
int main() {
    speed;
    string a;
    cin >> a;
    if(a.back() == 's')
    	a += "e";
	cout << a << "s";
}             
                     a
 
/*
6 0
1 2 4 6 8 10
1 4  d
*/ 

Compiler output:
a.cc:69:22: error: 'a' does not name a type
   69 |                      a
      |                      ^
Language: C++

//
#include <atcoder/fenwicktree>
#include <atcoder/segtree>
#include <atcoder/lazysegtree>
#include <atcoder/string>
#include <atcoder/math>
#include <atcoder/convolution>
#include <atcoder/modint>
#include <atcoder/dsu>
#include <atcoder/maxflow>
#include <atcoder/mincostflow>
#include <atcoder/scc>
#include <atcoder/twosat>
//
#include <vector>
#include <set>
#include <map>
#include <array>
#include <iostream>
#include <cstdio>
#include <cstdint>
#include <algorithm>
#include <numeric>
#include <bitset>
#include <iomanip>
//
using ll = long long;
using namespace std;
#define rep(i,n) for(ll i=0;i<(n);++i)
#define outD(fpv) cout << setprecision(20) << fpv << endl;
inline void yes(bool cond) { cond ? puts("Yes") : puts("No"); }
inline void YES(bool cond) { cond ? puts("YES") : puts("NO"); }
template<typename Type> inline void chmin(Type& a, Type b) { if (a > b) a = b; }
template<typename Type> inline void chmax(Type& a, Type b) { if (a < b) a = b; }
template<typename Arr, typename Type> inline void fill(Arr& arr, Type v) { std::fill(arr.begin(), arr.end(), v); }
template<typename Type> inline void sort(Type& arr) { std::sort(arr.begin(), arr.end()); }
template<typename Type> inline void reverse(Type& arr) { reverse(arr.begin(), arr.end()); }
template<typename Type> inline Type nth(vector<Type>& arr, size_t pos) { std::nth_element(arr.begin(), arr.begin() + pos, arr.end()); return arr[pos]; }
template<typename Type> inline void unique(Type& arr) { sort(arr); arr.erase(unique(arr.begin(), arr.end()), arr.end()); }
constexpr ll INF_I = std::numeric_limits<ll>::max();
constexpr ll BIGP = 1000000007L;
constexpr double INF_F = std::numeric_limits<float>::infinity();
constexpr double PI = 3.14159265358979323846L;
using P = pair<ll, ll>;
//
int main()
{
    cin.tie(0); ios::sync_with_stdio(false);
    string S;
    cin >> S;
    if (S[S.size() - 1] == 's')
    {
        S[S.size() - 1] = 'e';
        S.push_back('s');
    }
    else
    {
        S.push_back('s');
    }
    cout << S;
    return 0;
}

Compiler output:
a.cc:2:10: fatal error: atcoder/fenwicktree: No such file or directory
    2 | #include <atcoder/fenwicktree>
      |          ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef unsigned int INT;
typedef unsigned long long LONG;
typedef long long LL;
typedef pair<int, int> PII;
const int N = 1e5 + 10;
const int mod = 1e9 + 7;
#define debug(x) cerr << #x << ": " << (x) << '\n'
#define FW freopen("data2.txt", "w", stdout);
//快速读入输出，只适用于整数，使用时流同步打开，C语言不准关流
// getchar()<<cin(关流)<<scanf()<<cin
template <class T>
inline bool Read(T& ret)
{
    char c;
    int sgn;
    if (static_cast<void>(c = getchar()), c == EOF)
        return 0;
    while (c != '-' && (c < '0' || c > '9'))
        c = getchar();
    sgn = (c == '-') ? -1 : 1;
    ret = (c == '-') ? 0 : (c - '0');
    while (static_cast<void>(c = getchar()), c >= '0' && c <= '9')
        ret = ret * 10 + (c - '0');
    ret *= sgn;
    return 1;
}
//输出只能用于整数
template <class T>
inline void Write(T x)
{
    if (x < 0)
        putchar('-'), x = -x;
    if (x > 9)
        Write(x / 10);
    putchar(x % 10 + '0');
}

void slove(int question_num)
{
    string s;
    cin>>s;
    if(s[s.size()-1]=='s') cout<<s<<"es"<<endl;
    else cout<<s<<'s'<<endl;
}


int main()
{
    int num = 1;
    // cin >> num;
    for (int i = 1; i <= num; ++i) {
        slove1(i);
    }
    // system("pause");
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:54:9: error: 'slove1' was not declared in this scope; did you mean 'slove'?
   54 |         slove1(i);
      |         ^~~~~~
      |         slove
Language: C++

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

int main() {
  string s;
  cin >> s;
  if (s.at[s.size()-1] == 's')
    cout << s << "es" << endl;
  else
    cout << s << 's' << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:11: error: invalid types '<unresolved overloaded function type>[std::__cxx11::basic_string<char>::size_type {aka long unsigned int}]' for array subscript
    7 |   if (s.at[s.size()-1] == 's')
      |           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define Online
#define nowtime (double)clock()/CLOCKS_PER_SEC
void tie()
{
	ios::sync_with_stdio(0);
	cin.tie(0);
}
int main()
{
	tie();
	#ifndef Online
	freopen("in.txt","r",stdin);
	freopen("out.txt","w",stdout);
	#endif
	string s;
	cin>>s;
	if(s[s.size-1]=='s') s+="es";
	else s+='s';
	cout<<s; 
	#ifndef Online
	fclose(stdin);
	fclose(stdout);
	#endif
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:16: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   19 |         if(s[s.size-1]=='s') s+="es";
      |              ~~^~~~
      |                    ()
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
#define repl(i,l,r) for(int i=l;i<r;i++)
using ll = long long;
const int inf=2e9+10;
const ll MOD=1e9+7;
const ll INF=9e18+10;
const int dx[4]={1,0,-1,0};
const int dy[4]={0,1,0,-1};

int main(){
        string s;cin>>s;
        cout<<s
        if(s.[s.size()-1]=='s')cout<<"e"
        cout<<endl;
        return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:16: error: expected ';' before 'if'
   14 |         cout<<s
      |                ^
      |                ;
   15 |         if(s.[s.size()-1]=='s')cout<<"e"
      |         ~~
Language: C++

#include<bits/stdc++.h>
#include<stdio.h>

#define chmax(a, b) (a) = ((a) < (b)) ? (b) : (a)
#define YMAX 1000000007
#define mend '\n'

typedef long long ll;

using namespace std;

int main() { 
  string S;
  cin >> S;

  int len = S.size();
  if(S[len - 1] != 'S') {
    cout << S << men;
  } else {
    S[len - 1] = 'e';
    cout << S << 's' << mend;
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:18: error: 'men' was not declared in this scope; did you mean 'len'?
   18 |     cout << S << men;
      |                  ^~~
      |                  len
Language: C++

#include<cstdio>
#include<cstring>
using namespace std;
string st;
int main() {
    cin>>st;cout<<st;
    if(st[st.size()-2]==s) cout<<"es";
    else cout<<"s";
}

Compiler output:
a.cc:4:1: error: 'string' does not name a type; did you mean 'stdin'?
    4 | string st;
      | ^~~~~~
      | stdin
a.cc: In function 'int main()':
a.cc:6:5: error: 'cin' was not declared in this scope
    6 |     cin>>st;cout<<st;
      |     ^~~
a.cc:3:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
    2 | #include<cstring>
  +++ |+#include <iostream>
    3 | using namespace std;
a.cc:6:10: error: 'st' was not declared in this scope; did you mean 'std'?
    6 |     cin>>st;cout<<st;
      |          ^~
      |          std
a.cc:6:13: error: 'cout' was not declared in this scope
    6 |     cin>>st;cout<<st;
      |             ^~~~
a.cc:6:13: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:25: error: 's' was not declared in this scope
    7 |     if(st[st.size()-2]==s) cout<<"es";
      |                         ^
Language: C

#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using vi = vector<int>;
using vc = vector<char>;
using vs = vector<string>;
using vl = vector<ll>;
using vb = vector<bool>;
using vvi = vector<vector<int>>;
using vvl = vector<vector<ll>>;
using vvc = vector<vector<char>>;
using vvs = vector<vector<string>>;
using vvb = vector<vector<bool>>;
#define rep(i, n) for(int i = 0; i < n; i++)
const ll mod = 1000000007;
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};

int main() {
  string s;
  cin >> s;
  if(s.at(s.size() - 1) == 's') {
    cout << s + "es" << endl;
  }
  else {
    cout << s + 's' << endl;
  }
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <atcoder/all>

using namespace std;
using namespace atcoder;

template<class T> inline bool chmin(T& a, T b) {
    if (a > b) {
        a = b;
        return true;
    }
    return false;
}
template<class T> inline bool chmax(T& a, T b) {
    if (a < b) {
        a = b;
        return true;
    }
    return false;
}

typedef long long ll;
typedef unsigned long long ull;

string solve(string s) {
    int n = s.size();
    if (s.at(n - 1) == 's') {
        return s + "es";
    }
    return s + 's';
}

int main() {
    string s;
    cin >> s;
    cout << solve(s) << endl;
}

Compiler output:
a.cc:2:10: fatal error: atcoder/all: No such file or directory
    2 | #include <atcoder/all>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main(){
    string a;
    count>>a;
 int b=a.size();
  char c=a.at(b-1);
  if(c==s)
    cout<<a<<"es";
  else
    cout<<a<<"s";
  
 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'count' was not declared in this scope
    6 |     count>>a;
      |     ^~~~~
a.cc:9:9: error: 's' was not declared in this scope
    9 |   if(c==s)
      |         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
	int s;cin>>s;
	int len = s.length();
	if(s[len-1]=='s') cout<<s<<"es";
	else cout<<s<<"s";
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:21: error: request for member 'length' in 's', which is of non-class type 'int'
    5 |         int len = s.length();
      |                     ^~~~~~
a.cc:6:13: error: invalid types 'int[int]' for array subscript
    6 |         if(s[len-1]=='s') cout<<s<<"es";
      |             ^
Language: C++

//Radhe Radhe
#include<bits/stdc++.h>
#define godspeed  ios_base:: sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define mod 1000000007
#define ll long long
#define ld long double
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define en '\n'
#define rep(i,n)    for(ll i=0; i<n; i++)
#define rep1(i,a,b)    for(ll i=a; i<=b; i++)
#define repVect(i,n)    for(ll i=0; i<sum.size(); i++)
#define fixed cout.setf(ios::fixed);
#define Precise cout.precision(7);
#define yes cout<<"YES"<<'\n'
#define no cout<<"NO"<<'\n'
using namespace std;

int main()
{
    godspeed
    ll  t,n,m,x,i,j,k,l;
    string s;
    cin>>s;
    if(s[s.length()-1]=='s')
        cout<<s.substr(0,s.length()-1)<<"es"<<en;
    else 
    cout<<s<<"s"<<en;
    
    
    
    cout<< <<en;
    /*
    ll a[n],sum=0;
    for(i=0; i<n; i++)
        cin>>a[i];

    for(i=0; i<n-1; i++)
    for(j=i+1; j<n; j++)
   {
       sum+=mulmod(a[i],a[j],mod);
   }
   */


    return 0;
}






Compiler output:
a.cc: In function 'int main()':
a.cc:34:12: error: expected primary-expression before '<<' token
   34 |     cout<< <<en;
      |            ^~
Language: C++

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

#define INF_LL (int64)1e18
#define INF (int32)1e9
#define REP(i, n) for(int64 i = 0;i < (n);i++)
#define FOR(i, a, b) for(int64 i = (a);i < (b);i++)
#define all(x) x.begin(),x.end()
#define fs first
#define sc second

using int32 = int_fast32_t;
using uint32 = uint_fast32_t;
using int64 = int_fast64_t;
using uint64 = uint_fast64_t;
using PII = pair<int32, int32>;
using PLL = pair<int64, int64>;

const double eps = 1e-10;

template<typename A, typename B>inline void chmin(A &a, B b){if(a > b) a = b;}
template<typename A, typename B>inline void chmax(A &a, B b){if(a < b) a = b;}

template<typename T>
vector<T> make_v(size_t a){return vector<T>(a);}

template<typename T,typename... Ts>
auto make_v(size_t a,Ts... ts){
	return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));
}

template<typename T,typename U,typename... V>
typename enable_if<is_same<T, U>::value!=0>::type
fill_v(U &u,const V... v){u=U(v...);}

template<typename T,typename U,typename... V>
typename enable_if<is_same<T, U>::value==0>::type
fill_v(U &u,const V... v){
	for(auto &e:u) fill_v<T>(e,v...);
}

struct s1 {
  static int64 op(int64 a, int64 b) { return max(a, b); }
  static int64 e() { return -INF_LL; }
  static int64 mapping(int64 l, int64 r) { return max(l, r); };
  static int64 composition(int64 l, int64 r) { return max(l, r); };
  static int64 id() { return -INF_LL; };
};

int main(void) {
  cin.tie(0);
  ios::sync_with_stdio(false);

//  auto op1 = [](int64 a, int64 b) -> int64 {
//    return max(a, b);
//  };
//  auto e = []() { return -INF_LL; };
//  auto mapping = [](int64 l, int64 r) { return max(l, r); };
//  auto composition = [](int64 l, int64 r) { return max(l, r); };
//  auto id = []() { return -INF_LL; };

  string s;
  cin >> s;
  if (s.back() == 's') s += "es";
  else s += "s";
  cout << s << endl;


}



Compiler output:
a.cc:2:10: fatal error: atcoder/all: No such file or directory
    2 | #include <atcoder/all>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using namesapce std;
int main()
{ string s;
  cin>>s;
 if(s[s.length()-1]=='s')
    cout<<s<<"es";
 else
     cout<<s<<"s";
  
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namesapce'
    2 | using namesapce std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:4:3: error: 'string' was not declared in this scope
    4 | { string s;
      |   ^~~~~~
a.cc:4:3: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:5:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |   cin>>s;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:5:8: error: 's' was not declared in this scope
    5 |   cin>>s;
      |        ^
a.cc:7:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    7 |     cout<<s<<"es";
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:6: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |      cout<<s<<"s";
      |      ^~~~
      |      std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include<bits/stdc++.h>
#define all(x) (x).begin(),(x).end()
#define ll long long
#define rep(i,n) for(int i = 0; i < int(n); i++)
#define vi vector<int>
using namespace std;
const int INF = 1001001001;
const int MOD = 1e9+7;
const int dx[] = {-1, 0, 1, 0};
const int dy[] = {0, 1, 0, -1};
template<class T> inline bool chmax(T &a, const T &b){ if(a<b){ a=b; return 1; } return 0; }
template<class T> inline bool chmin(T &a, const T &b){ if(b<a){ a=b; return 1; } return 0; }

int main(){
  cin.tie(0), ios::sync_with_stdio(false);
  string s; cin >> s;
  if(s.back() == "s") s += "es";
  else s += "s";
  cout << s;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:15: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   17 |   if(s.back() == "s") s += "es";
      |      ~~~~~~~~~^~~~~~