criyle/codenet-compile-errors huggingface dataset:
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:
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>
#define FOR(i, a, n) for(int (i) = (int)(a); (i) < (int)(n); ++(i))
#define FORe(i, a, n) for(int (i) = (int)(a); (i) <= (int)(n); ++(i))
#define rFOR(i, a, n) for(int (i) = (int)(n)-1; (i) >= (int)(a); --(i))
#define rFORe(i, a, n) for(int (i) = (int)(n); (i) >= (int)(a); --(i))
#define REP(i, n) FOR((i), 0, (n))
#define REPe(i, n) FORe((i), 1, (n))
#define REPo(i, n) FORe((i), 0, (n))
#define rREP(i, n) rFOR((i), 0, (n))
#define rREPe(i, n) rFORe((i), 1, (n))
#define rREPo(i, n) rFORe((i), 0, (n))
#define rep(i, n) FOR((i), 0, (n))
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()
#define fi first
#define se second
#define dup(x, y) (((x)+(y)-1)/(y))
#define vc(T) vector<T>
#define vv(T) vc(vc(T))
using namespace std;
using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using P = pair<int,int>;
using pll = pair<ll,ll>;
using T = tuple<int,int,int>;
using vi = vector<int>;
using vvi = vector<vi>;
using vl = vector<ll>;
using vs = vector<string>;
using vp = vector<P>;
using vt = vector<T>;

template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }

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

  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>
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:8:31: error: invalid conversion from 'const char*' to '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} [-fpermissive]
    8 |   if(str.at(str.length()-1) = "s") {
      |                               ^~~
      |                               |
      |                               const char*
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: In function 'int main()':
a.cc:66:17: error: expected ';' before 'cout'
   66 |         a += "e"
      |                 ^
      |                 ;
   67 |         cout << a << "s";
      |         ~~~~     
a.cc: At global scope:
a.cc:69:22: error: 'a' does not name a type
   69 |                      a
      |                      ^
Language: C++

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

typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<ll> vl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef pair<int,int> pii;
typedef pair<double, double> pdd;
typedef pair<ll, ll> pll;
typedef vector<pii> vii;
typedef vector<pll> vll;
typedef vector<pdd> vdd;

#define rep(i, n) for(int i = 0; i < (int)(n); i++)
#define mem(a,b) memset(a, b, sizeof(a) )
#define all(x) (x).begin(),(x).end()
#define INF 1e18
#define MOD 1000000007
#define PB push_back
#define MP make_pair
#define F first
#define S second

inline void normal(ll &a) { a %= MOD; (a < 0) && (a += MOD); }
inline ll modMul(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a*b)%MOD; }
inline ll modAdd(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); return (a+b)%MOD; }
inline ll modSub(ll a, ll b) { a %= MOD, b %= MOD; normal(a), normal(b); a -= b; normal(a); return a; }
inline ll modPow(ll b, ll p) { ll r = 1; while(p) { if(p&1) r = modMul(r, b); b = modMul(b, b); p >>= 1; } return r; }
inline ll modInverse(ll a) { return modPow(a, MOD-2); }
inline ll modDiv(ll a, ll b) { return modMul(a, modInverse(b)); }

ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
ll lcm(ll a,ll b){return a/gcd(a,b)*b;}

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

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

#include <bits/stdc++.h>
#define pb push_back
typedef long long ll;
using namespace std;
int main() {
	string s;
	cin >> s;
	if (s[s.size() - 1] == 's')
		cout << s + "es" << endl;
	else
		cout << s + "s" << endl;b
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:41: error: 'b' was not declared in this scope
   11 |                 cout << s + "s" << endl;b
      |                                         ^
Language: C++

#include <bits/stdc++.h>

#define rep(X, N) for (ll X = 0LL; X < (N); X++)
#define ALL(V) (V).begin(), (V).end()
#define endl "\n"

using namespace std;
typedef unsigned int uint;
typedef long long ll;
typedef unsigned long long ull;

const double PI = 3.1415926535897932384626;
const ll MODN = 1000000007;
const ll MODN2 = 998244353;

int main(){

    stirng s;
    cin >> s;
    int size = s.size();

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

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:5: error: 'stirng' was not declared in this scope
   18 |     stirng s;
      |     ^~~~~~
a.cc:19:12: error: 's' was not declared in this scope
   19 |     cin >> s;
      |            ^
Language: C++

/*
我的心脏怦怦跳，监管者就在附近
name:
Algorithm:
writer:Lxs(cdx)
place:
nothing is impossible
*/
#pragma GCC optimize(3,"Ofast","inline")
#include<bits/stdc++.h>
#include<string>
#include<iostream>
#include<cmath>
#include<set>
#include<stack>
#include<queue>
#include<unistd.h>
#include<stdio.h>
#include<cstring>
#define random(a,b) (rand()%(b-a+1)+a)
using namespace std;
bool prime(int x){
	 int i;
	 if(x<2) return 0;
	 for(i=2;i*i<=x;i++){
		if(x%i==0){return 0;}
	 }
	 return 1;
}
bool flag[19999990];
int _prime[19999990];
void get_prime(int maxn)
{
    int i,j;
    for(i=2;i<=maxn;i++)
        if(!flag[i])
        {
            _prime[++_prime[0]]=i;
            for(j=i*i;j<=maxn;j+=i)
                flag[j]=true;
        }
}
int main()
{
	string s
	cin>>s;
	if(s[s.size()-1]=='s'){
		cout<<s<<"es"<<endl;
	}
	else cout<<s<<"s"<<endl;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:46:9: error: expected initializer before 'cin'
   46 |         cin>>s;
      |         ^~~
a.cc:47:12: error: 's' was not declared in this scope
   47 |         if(s[s.size()-1]=='s'){
      |            ^
Language: C++

// Best practice
 
#include<bits/stdc++.h>
 
#define int         long long
#define pb          push_back
#define pf          emplace_front
#define all(a)      (a).begin(),(a).end()
#define rall(a)     (a).rbegin(),(a).rend()
#define pii 		pair<int,int>
#define psi 		pair<string,int>
#define vi 			vector<int>
#define vpii  		vector<pii>
#define vvi 		vector<vi>
#define sz(x)	    (int)(x).size()
#define x           first
#define y           second
#define endl        '\n'
#define tezz        ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define MOD         1000000007
#define hell        998244353
#define prec(n) 	fixed<<setprecision(n)
#define ini(a, i) 	memset(a, i, sizeof(a))
#define output(x)   cout << (x ? "YES" : "NO")<<endl;
using namespace std;
 
#define debug(vec) cout<<(#vec)<<" : [ "; for (auto& i: vec) cout<<i<<" "; cout<< "]" << endl
#define debugp(vec) cout<<(#vec)<<" : [ "; for (auto& i: vec) cout<<"("<<i.x<<","<<i.y<<")"<<" "; cout<< "]" << endl
#define trace(args...) { string _s = #args; replace(_s.begin(), _s.end(), ',', ' '); stringstream _ss(_s); istream_iterator<string> _it(_ss); err(_it, args);cout << endl; }
void err(istream_iterator<string> it) {}
template<typename T, typename... Args>
void err(istream_iterator<string> it, T a, Args... args) {
    cout << "[" << *it << ": " << a << "]\t";
    err(++it, args...);
}
 
// const int dx[4] = { -1, 1, 0, 0};
// const int dy[4] = {0, 0, -1, 1};
// int dX[] = { -1, -1, -1, 0, 0, 1, 1, 1 };
// int dY[] = { -1, 0, 1, -1, 1, -1, 0, 1 };
 
 
// Code from Here -------------------------------------------------------------------------------

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

Compiler output:
a.cc: In function 'int main()':
a.cc:47:2: error: expected primary-expression before '=' token
   47 |  =
      |  ^
a.cc:48:16: error: expected primary-expression before 's'
   48 |         string s;
      |                ^
a.cc:49:16: error: 's' was not declared in this scope
   49 |         cin >> s;
      |                ^
Language: C++

1// {{{ by unolight
#pragma region
#include <bits/stdc++.h>
#include <unistd.h>
#pragma GCC diagnostic ignored "-Wunused-result"
#pragma GCC diagnostic ignored "-Wunused-function"
#define SZ(x) ((int)(x).size())
#define ALL(x) begin(x),end(x)
#define RALL(x) rbegin(x),rend(x)
#define REP(i,n) for ( int i=0; i<int(n); i++ )
#define REP1(i,a,b) for ( int i=(a); i<=int(b); i++ )
#define MP make_pair
#define PB push_back
using namespace std;
typedef int64_t LL;
typedef pair<int,int> PII;
typedef vector<int> VI;

namespace { namespace unolight {
// Read Input
template<class T> void _R( T &x ) { cin>>x; }
void _R( int &x ) { scanf("%d",&x); }
void _R( int64_t &x ) { scanf("%" PRId64,&x); }
void _R( double &x ) { scanf("%lf",&x); }
void _R( char &x ) { scanf(" %c",&x); }
void _R( char *x ) { scanf("%s",x); }
void R() {}
template<class T, class... U> void R( T& head, U&... tail ) { _R(head); R(tail...); }
// Write Output
template<class T> void _W( const T &x ) { cout<<x; }
void _W( const int &x ) { printf("%d",x); }
void _W( const int64_t &x ) { printf("%" PRId64,x); }
void _W( const double &x ) { printf("%.16f\n",x); }
void _W( const char &x ) { putchar(x); }
void _W( const char *x ) { printf("%s",x); }
template<class T> void _W( const vector<T> &x ) { for (auto i = x.begin(); i != x.end(); _W(*i++)) if (i != x.cbegin()) putchar(' '); }
void W() {}
template<class T, class... U> void W( const T& head, const U&... tail ) { _W(head); putchar(sizeof...(tail)?' ':'\n'); W(tail...); }

#ifdef UNOLIGHT
#include "dump.hpp"
#else
#define dump(...)
#endif

template<class T> inline bool chmax( T &a, const T &b ) { return b>a ? a=b,true : false; }
template<class T> inline bool chmin( T &a, const T &b ) { return b<a ? a=b,true : false; }
template<class T> using MaxHeap = priority_queue<T>;
template<class T> using MinHeap = priority_queue<T, vector<T>, greater<T>>;
template<class T, class F=less<T>> void sort_uniq( vector<T> &v, F f=F() ) {
    sort(begin(v),end(v),f);
    v.resize(unique(begin(v),end(v))-begin(v));
}
#pragma endregion
// }}}

void main() {
    string s;
    cin >> s;
    if ( s.back()=='s' ) s+="es";
    else s+="s";
    cout << s << '\n';
}

}} // {{{ main
int main() { unolight::main(); return 0; }
// }}}


Compiler output:
a.cc:1:1: error: expected unqualified-id before numeric constant
    1 | 1// {{{ by unolight
      | ^
Language: C++

#include<iostream>
#include<math.h>
#include<bits/stdc++.h>
#define ll long long int
#define hell 1000000007LL
using namespace std;
vector<ll>adj[100005];
bool visit[500005];
ll power(ll x, ll y,ll z){ 
    if(y==0)
     return 1;
    else
    {
        ll p=power(x,y/2,z);
        ll w=(p*p)%z;
        if(y%2==0)
         return w;
        else
        return (x*w)%z;
    }}
ll gcd(ll x,ll y)
{
    if(y==0)
     return x;
    else
    return gcd(y,x%y);
}
ll dfs(ll x,vector<ll>&a)
{
    visit[x]=true;
    ll m=a[x-1];
    for(auto it=adj[x].begin();it!=adj[x].end();it++)
    {
        if(visit[*it]==false)
        {
            m=min(m,dfs(*it,a));
        }
        
    }
    return m;
}
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.precision(20);
    string s;
    cin>>s;
    int n=s.length()-1;
    if(s[n]=='s')
    cout<<s<<"es";
    else
    cout<<s<<"s";}

Compiler output:
a.cc: In function 'long long int dfs(long long int, std::vector<long long int>&)':
a.cc:30:5: error: reference to 'visit' is ambiguous
   30 |     visit[x]=true;
      |     ^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:80,
                 from a.cc:3:
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:8:6: note:                 'bool visit [500005]'
    8 | bool visit[500005];
      |      ^~~~~
a.cc:34:12: error: reference to 'visit' is ambiguous
   34 |         if(visit[*it]==false)
      |            ^~~~~
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:8:6: note:                 'bool visit [500005]'
    8 | bool visit[500005];
      |      ^~~~~
Language: C++

#include<bits/stdc++.h>
#include <atcoder/all>
#define ll long long int
#define rep(i,n) for(ll i=0;i<n;i++)
#define vec vector<ll>
#define mat vector<vector<ll>>

using namespace std;
using namespace atcoder;

const ll mod=1000000007;//998244353;
const ll inf=LONG_LONG_MAX;
ll dx4[4]={1,0,-1,0};
ll dy4[4]={0,-1,0,1};
ll dx8[8]={1,0,-1,1,-1,1,0,-1};
ll dy8[8]={1,1,1,0,0,-1,-1,-1};

int main(){

  string s;
  cin >> s;
  ll n=s.size();
  if(s[n-1]=='s')s=s+"es";
  else s=s+'s';

  cout << s << endl;

  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++

// in case of multiple test cases and N=1e5 don't intialize arrays as global except for graph vector-array
// always check whether or not you are doing mod of a negative number
// always use 1LL instead of 1
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <bits/stdc++.h>
 
using namespace __gnu_pbds;
using namespace std;

// using long doubles saves you from corner cases but is very time consuming
#define double      	long double
#define int         	long long
#define pb          	push_back
#define pii         	pair<int,int>
#define vi          	vector<int>
#define vii         	vector<pii>
#define mi          	map<int,int>
#define mii         	map<pii,int>
#define all(a)      	(a).begin(),(a).end()
#define sz(x)       	(int)x.size()
// just comment the line below in case of interactive problems
#define endl        	"\n"
#define repp(i,a,b) 	for(int i=a;i<b;i++)
#define rep(i,a,b) 		for(int i=a;i<=b;i++)
#define brep(i,a,b)     for(int i=a;i>=b;i--)
#define deb1(x)      	cout << #x << "=" << x << endl
#define deb2(x, y)  	cout << #x << "=" << x << "," << #y << "=" << y << endl
#define deb3(x, y, z)  	cout << #x << "=" << x << "," << #y << "=" << y << "," << #z << "=" << z << endl
#define trace(v) 		for(auto it=v.begin();it!=v.end();it++)cout<<*it<<" ";cout<<endl;
#define tracearr(a,l,r) for(int iii=l;iii<=r;iii++)cout << a[iii] << " ";cout << endl;
#define PI          	3.1415926535897932384626
#define F 				first
#define S 				second
#define clr(x,y) 		memset(x, y, sizeof(x))
#define IOS         	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);


typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
// *s.find_by_order(1) - gives the 2nd samllest element in set
// s.order_of_key(x)   - gives the number of elements in the set which are strictly smaller than x


const int N=1e5 + 5;
const int MOD=1e9 + 7;

int32_t main()
{
	IOS;
	int T=1;
	//cin >> T;
	// int numOfSetBits = __builtin_popcountll(n);
	std::cout << std::fixed << std::setprecision(12);
	while(T--)
	{
		string s;
		cin >> s;
		int n = s.size();
		if(s[n-1]=='s')
			s += "es";
		else
			s += "s"';
		cout << s << endl;
	}
}

Compiler output:
a.cc:62:33: warning: missing terminating ' character
   62 |                         s += "s"';
      |                                 ^
a.cc:62:33: error: missing terminating ' character
   62 |                         s += "s"';
      |                                 ^~
a.cc: In function 'int32_t main()':
a.cc:62:33: error: expected ';' before 'cout'
   62 |                         s += "s"';
      |                                 ^
      |                                 ;
   63 |                 cout << s << endl;
      |                 ~~~~
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;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:25: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    6 |   if(S.at(S.size() - 1) == "s")cout << S << "es" << endl;
      |      ~~~~~~~~~~~~~~~~~~~^~~~~~
Language: C++

// #pragma GCC target ("avx2")
// #pragma GCC optimization ("O2")
// #pragma GCC optimization ("unroll-loops")
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef long double ld;
#define int ll
#define pb push_back
#define pob pop_back
#define __bp __builtin_popcount
using pii = pair<int,int>;
using pil = pair<int,ll>;
using pli = pair<ll,int>;
using pdd = pair<ld,ld>;
using vint = vector<int>;
using vll = vector<ll>;
using vpii = vector<pii>;
using vpil = vector<pil>;
using vpli = vector<pli>;
#define F first
#define S second
const int N = 2e5+5;//(1 << 18) + 5;
//const ll inf = 1e18+7;
const int Inf = 1e9+7;
const ll INF = 1e18+7;
const int Mod = 1e9+7;
const ld eps = 1e-9;
#ifndef M_PI
#define M_PI 3.1415926535
#endif

void io()
{
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);
	cout.tie(NULL);
	cerr.tie(NULL);
//	freopen("sweets.in", "r", stdin);
//	freopen("sweets.out", "w", stdout);
//	cout << setprecision(7) << fixed;
}

int n, k;

void solve()
{
	string s;
	cin >> s;
	if (s[s.size() - 1] == 's'):
	{
		for (int i = 0; i < s.size() - 1; ++i)
		{
			cout << s[i];
		}
		cout << "es" << '\n';
	}
	else
	{
		cout << s << "s\n";
	}

}

signed main()
{
	io();
	int tt = 1;
	// cin >> tt;
	while (tt--) {
		// solve();
		solve();
//		cerr << '\n';

	}
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:50:36: error: expected primary-expression before ':' token
   50 |         if (s[s.size() - 1] == 's'):
      |                                    ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i=0; i<(int)(n); i++)
#define rep1(i, n) for(int i=1; i<=(int)(n); i++)
#define reprange(i, a) for(int i : vector<int>a)
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> wi;
typedef vector<ll> vl;
const ll inf=1LL << 60;
const ll mod=1e9+7;

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

  string s;
  cin >> s;

  if(s[(int)s.zise()-1]=='s')cout << s << 's' << endl;
  else cout << s << "es" << endl;

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:15: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'zise'
   20 |   if(s[(int)s.zise()-1]=='s')cout << s << 's' << endl;
      |               ^~~~
Language: C++

#include<bits/stdc++.h>
#define int long long
#define all(x) x.begin(),x.end()
using namespace std;
#define mod 1000000007
const int maxn=1000000;
void solve() {
    string s;
    cin>>s;
    if(s[s.size()-1]!='s') cout<<s<<"s";
    else cout<<s<<es;

}

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1;
    //cin >> t;
    while (t--) {
        solve();
    }
}


Compiler output:
a.cc: In function 'void solve()':
a.cc:11:19: error: 'es' was not declared in this scope; did you mean 's'?
   11 |     else cout<<s<<es;
      |                   ^~
      |                   s
Language: C++

#include<iostream>
#include<cstio>
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:2:9: fatal error: cstio: No such file or directory
    2 | #include<cstio>
      |         ^~~~~~~
compilation terminated.
Language: C++

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

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


Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'S' was not declared in this scope
    8 |         cin >> S;
      |                ^
Language: C++

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

typedef long long ll;
typedef long double ld;
//#define int ll
//#define endl '\n'

// use unique(x) - removec consecutive items, returns vec.begin() + number of items
// for vector: sort(all(vec)); vec.erase(unique(all(vec)), vec.end());
// use iota(all(vec), 0) for filling a vector with 0,1,2...
// use fill(all(vec), 1) for filling a vector with 1,1,1...
// use rotate(vec.begin(), vec.begin() + 1, vec.end()) to rotate a vector | middle arg becomes first
// print number in binary -> cout << bitset<20>(n);

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


Compiler output:
a.cc:17:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   17 | main(){
      | ^~~~
a.cc: In function 'int main()':
a.cc:21:44: error: 'e' was not declared in this scope
   21 |         if(s[n-1]=='s')cout<<s<<"es"<<endl;e
      |                                            ^
Language: C++

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

typedef long long ll;
typedef unsigned int uint;
typedef unsigned long long ull;
static const double EPS = 1e-12;
static const double PI = acos(-1.0);

template <class T>
using V = vector<T>;
template <class T>
using VV = V<V<T>>;

#define FOR(i, a, b) for (int i = (int)(a); i < (int)(b); i++)
#define REP(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(a) (a).begin(), (a).end()
#ifdef LOCAL
#define dbg(x) cerr << __LINE__ << " : " << #x << " = " << (x) << endl
#else
#define dbg(x) true
#endif

void solve(std::string S) {
  if (S[S.size() - 1] == 's') {
    cout << S << "es" << endl;
  } else {
    cout << S << "s" << endl;
  }
}

int main() {
  std::string S;
  std::cin >> S;
  solve(S);
  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<bits/stdc++.h>

#define EB emplace_back
#define int long long
#define F first
#define S second
#define N 500005
#define all(x) x.begin(),x.end()
#define endl '\n'
#define IOS ios::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define rt return
using namespace std;

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

int32_t main(){
	IOS;
	int tt = 1; 
	// cin >> tt;
	while(tt--){
		test_cases();   
    cout << endl; 	
	}
	return 0;
}


Compiler output:
a.cc: In function 'void test_cases()':
a.cc:17:7: error: redeclaration of 'long long int n'
   17 |   int n = s.size();
      |       ^
a.cc:15:7: note: 'long long int n' previously declared here
   15 |   int n;
      |       ^
Language: C++

#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
using namespace std;
//---------------------------------//
void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define deb(x...) cerr << "[" << #x << "] = ["; _print(x)
#else
#define deb(x...)
#endif
//------------------------------//

typedef long long int ll;
typedef pair<int,int> pi;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pi> vpi;
typedef vector<pll> vpll;

#define  ff           first
#define  ss           second
#define  pb           push_back
#define  IOS          ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define  all(x)       (x).begin(), (x).end()
#define  ps(x,y)      fixed<<setprecision(y)<<x
#define  rep(i,a,b)   for(ll i=a ; i<b ; ++i)

const ll MOD = 1e9 + 7;
const ll INF = 1e18;
const ll maxn = 1e6 + 4;


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

int main(){
  IOS
  	solve();
  //cerr <<endl <<"[ Time : " << (float)clock() / CLOCKS_PER_SEC << " secs ]" << endl;
}

// integer overflow

Compiler output:
a.cc: In function 'void solve()':
a.cc:60:25: error: expected primary-expression before ';' token
   60 |   else cout << s<<'s' <<;
      |                         ^
Language: C++

#include <bits/stdc++.h>
//#include <boost/multiprecision/cpp_int.hpp>
//namespace mp = boost::multiprecision;
#include "atcoder/all"

using namespace std;

const double PI = 3.14159265358979323846;
typedef long long ll;
const double EPS = 1e-9;
#define rep(i, n) for (int i = 0; i < (n); ++i)
typedef pair<ll, ll> P;
const ll INF = 10e17;
#define cmin(x, y) x = min(x, y)
#define cmax(x, y) x = max(x, y)
#define ret() return 0;

double equal(double a, double b) {
    return fabs(a - b) < DBL_EPSILON;
}

std::istream &operator>>(std::istream &in, set<int> &o) {
    int a;
    in >> a;
    o.insert(a);
    return in;
}

std::istream &operator>>(std::istream &in, queue<int> &o) {
    ll a;
    in >> a;
    o.push(a);
    return in;
}

bool contain(set<int> &s, int a) { return s.find(a) != s.end(); }

typedef priority_queue<ll, vector<ll>, greater<ll> > PQ_ASK;

string solve() {
    string s;
    cin >> s;

    if (s.back() == 's') {
        return s + "es";
    } else {
        return s + "s";
    }

}

int main() {
    cout << solve() << endl;
}


Compiler output:
a.cc:4:10: fatal error: atcoder/all: No such file or directory
    4 | #include "atcoder/all"
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <iostream>
//#include <algorithm>
//#include <vector>
//#include <unordered_map>
//#include <map>
//#include <queue>
//#include <cstring>

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

using namespace std;

void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}
template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i : x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}


#define MOD		1000000007
#define ll		long long int
#define pll		pair<ll, ll>
#define pb		push_back
#define endl	"\n"
#define f 		first
#define s 		second
#define fastio 	ios_base::sync_with_stdio(false);cin.tie(NULL)
#define all(v)  (v).begin(), (v).end()
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)

ll power(ll x, ll y) { ll ans = 1; x %= MOD; while (y) {if (y & 1)ans = (x * ans) % MOD; x = (x * x) % MOD; y >>= 1;} return ans;}
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};



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

int main() {
    fastio;
    solve();

}


Compiler output:
a.cc: In function 'void solve()':
a.cc:56:12: error: expected unqualified-id before '+=' token
   56 |         s. += "es";
      |            ^~
Language: C++

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

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


Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'stirng' was not declared in this scope
    5 |   stirng S;
      |   ^~~~~~
a.cc:6:10: error: 'S' was not declared in this scope
    6 |   cin >> S;
      |          ^
Language: C++

#include <iostream>
using namespace std;
using ll = long long;

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


Compiler output:
a.cc: In function 'int main()':
a.cc:8:16: error: 'S' was not declared in this scope
    8 |         cin >> S;
      |                ^
Language: C++

#include <bits/stdc++.h>
#define ll long long
using namespace std;
typedef pair<int, int> P;
typedef pair<ll, ll> LP;

//定数
//円周率
const double pi = 3.141592653589793238462643383279;
//天井
const int INF = 1000000000; // = 10^9
const ll LINF = 100000000000000000; // = 10^17
//ABC文字列
const string ABC = "ABCDEFGHIJKLMNOPQRSTUVWXYZABC";
const string abc = "abcdefghijklmnopqrstuvwxyzabc";
//よくあるmodくん
const ll MOD = 1000000007; // = 10^9 + 7
//前処理テーブルの大きさ指定
const int MAX = 1200000; // = 10^6 + 2*(10^5)
//ちなみに、1024MBで持てる最大長の配列は10^8程度

//データ構造
//隣接リスト用構造体（有向グラフ向け）
struct edge {
  ll to; // E.toでその辺の終点へアクセスできる。
  ll cost; // e.costでその辺の重みにアクセスできる。
};
//Union_Find木
struct UnionFind {
  vector<int> UF; // UF.at(i) : iの親の番号
  vector<int> SIZE; // SIZE.at(root(i)) : iと連結されてる要素の数
  UnionFind(int N) : UF(N), SIZE(N, 1) { // 最初は全てが根であるとして初期化
    for(int i = 0; i < N; i++) {
      UF.at(i) = i;
    }
  }
  int root(int x) { // データxが属する木の根を再帰で得る：root(x) = {xの木の根}
    if (UF.at(x) == x) {
      return x;
    }
    return UF.at(x) = root(UF.at(x));
  }
  void unite(int x, int y) { // xとyの木を併合
    int rx = root(x); // xの根をrx
    int ry = root(y); // yの根をry
    if (rx == ry) {
      return; // xとyの根が同じ(=同じ木にある)時はそのまま
    }
    // xとyの根が同じでない(=同じ木にない)時：小さい方の根を大きい方の根につける。
    if (SIZE.at(rx) < SIZE.at(ry)) {
      UF.at(rx) = ry;
      SIZE.at(ry) += SIZE.at(rx);
      SIZE.at(rx) = 0;
    }
    else {
      UF.at(ry) = rx;
      SIZE.at(rx) += SIZE.at(ry);
      SIZE.at(ry) = 0;
    }
  }
  bool same(int x, int y) { // 2つのデータx, yが属する木が同じならtrueを返す。
    int rx = root(x);
    int ry = root(y);
    return rx == ry;
  }
  int size(int x) { // xと連結されてる要素の数を返す。
    return SIZE.at(root(x));
  }
};

//関数 (計算量)
//ctoi (O(1))
int ctoi(char c){
  if (c == '0') return 0;
  if (c == '1') return 1;
  if (c == '2') return 2;
  if (c == '3') return 3;
  if (c == '4') return 4;
  if (c == '5') return 5; 
  if (c == '6') return 6;
  if (c == '7') return 7;
  if (c == '8') return 8;
  if (c == '9') return 9;
  return -1;  
}
//to_char (O(1))
char to_char(int i){
  if (i == 0) return '0';
  if (i == 1) return '1';
  if (i == 2) return '2';
  if (i == 3) return '3';
  if (i == 4) return '4';
  if (i == 5) return '5';
  if (i == 6) return '6';
  if (i == 7) return '7';
  if (i == 8) return '8'; 
  if (i == 9) return '9';
  return ' ';  
}

//メイン処理
int main() {
  cout << fixed << setprecision(16); //精度向上
  //ここまでテンプレ
  string N;
  cin >> N;
  if (N.at(int(N.size() - 1) == 's') {
    cout << N << "es" << endl;
  }
  else {
    cout << N << "s" << endl;
  }
}
  
  
  
  

Compiler output:
a.cc: In function 'int main()':
a.cc:107:37: error: expected ')' before '{' token
  107 |   if (N.at(int(N.size() - 1) == 's') {
      |      ~                              ^~
      |                                     )
a.cc:113:1: error: expected primary-expression before '}' token
  113 | }
      | ^
Language: C++

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

Compiler output:
a.cc: In function 'int main()':
a.cc:7:45: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
    7 |     if(str[str.size()-1]=='s')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:1:
/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)
      |                 ~~~~~~~^~~
a.cc:8:24: error: invalid conversion from 'const char*' to 'char' [-fpermissive]
    8 |     else str.push_back("s");
      |                        ^~~
      |                        |
      |                        const char*
/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++

//
//  atcoder.cpp
//
//
///
#include <bits/stdc++.h>
#include <boost/optional.hpp>
#include <boost/range/irange.hpp>
#include <boost/range/algorithm.hpp>
#include <boost/range/numeric.hpp>
#include <boost/bimap/bimap.hpp>
#include <boost/bimap/multiset_of.hpp>
#include <boost/multi_array.hpp>
#include <boost/integer/common_factor_rt.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/pending/disjoint_sets.hpp>
// #include <atcoder/all>

#define REPI(i, S, N) for(int i=int(S); i<int(N); i++)
#define REP(i, N) REPI(i, 0, N)
#define REC(f, ...) (void)0; const auto f = [&](const auto f, __VA_ARGS__)
using namespace std;
using namespace boost::integer;

using ll = long long;
namespace bst = boost;
// using mint = atcoder::modint1000000007;
template<typename T> class in {
    T value;
public:
    in() { cin >> value; }
    operator const T&() const { return value; }
    operator T&() { return value; }
    in& operator=(T source) { value = source; return *this; }
};
template<> class in<string> : public string {
public:
    in() { cin >> *this; }
};
template<class T> class inseq : public T {
public:
    template<typename... Arg> inseq(Arg... arg) : T(forward<Arg>(arg)...) { for (auto&& i : *this) cin >> i; }
};
template<class T> using invec = inseq<vector<T>>;

auto solve() {
  in<string> S;
  if (S.back == 's')
    return S + "es";
  else
    return S + "s";


 
}

template<typename T> void plot(const T& func) { cout << setprecision(9) << func() << endl; }
template<> void plot<void()>(void(&func)()) { func(); }

int main() {
  plot(solve);

  return 0;
}


Compiler output:
a.cc:7:10: fatal error: boost/optional.hpp: No such file or directory
    7 | #include <boost/optional.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#pragma region template
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using vi = vector<int>;
using vvi = vector<vi>;
using vvvi = vector<vvi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
using vld = vector<ld>;
using vvld = vector<vld>;
using vvvld = vector<vvld>;
using vs = vector<string>;
using pll = pair<ll, ll>;
using vp = vector<pll>;
template <typename T>
using pqrev = priority_queue<T, vector<T>, greater<T>>;
#define rep(i, n) for (ll i = 0, i##_end = (n); i < i##_end; i++)
#define repb(i, n) for (ll i = (n)-1; i >= 0; i--)
#define repr(i, a, b) for (ll i = (a), i##_end = (b); i < i##_end; i++)
#define reprb(i, a, b) for (ll i = (b)-1, i##_end = (a); i >= i##_end; i--)
#define ALL(a) (a).begin(), (a).end()
#define SZ(x) ((ll)(x).size())
//*
constexpr ll MOD = 1e9 + 7;
/*/
constexpr ll MOD = 998244353;
//*/
constexpr ll INF = 1e+18;
constexpr ld EPS = 1e-12L;
constexpr ld PI = 3.14159265358979323846L;
constexpr ll GCD(ll a, ll b) { return b ? GCD(b, a % b) : a; }
constexpr ll LCM(ll a, ll b) { return a / GCD(a, b) * b; }
template <typename S, typename T>
constexpr bool chmax(S &a, const T &b) {
  if (a < b) {
    a = b;
    return 1;
  }
  return 0;
}
template <typename S, typename T>
constexpr bool chmin(S &a, const T &b) {
  if (b < a) {
    a = b;
    return 1;
  }
  return 0;
}
#ifdef OJ_LOCAL
#include "dump.hpp"
#else
#define dump(...) ((void)0)
#endif
template <typename T>
bool print_(const T &a) {
  cout << a;
  return true;
}
template <typename T>
bool print_(const vector<T> &vec) {
  for (auto &a : vec) {
    cout << a;
    if (&a != &vec.back()) {
      cout << " ";
    }
  }
  return false;
}
template <typename T>
bool print_(const vector<vector<T>> &vv) {
  for (auto &v : vv) {
    for (auto &a : v) {
      cout << a;
      if (&a != &v.back()) {
        cout << " ";
      }
    }
    if (&v != &vv.back()) {
      cout << "\n";
    }
  }
  return false;
}
void print() { cout << "\n"; }
template <typename Head, typename... Tail>
void print(Head &&head, Tail &&... tail) {
  bool f = print_(head);
  if (sizeof...(tail) != 0) {
    cout << (f ? " " : "\n");
  }
  print(forward<Tail>(tail)...);
}
#pragma endregion

void Pr(bool f){
  cout << (f ? "Yes" : "No") << "\n";
  exit(0);
}

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(20);
  string s;
  cin >> s;
  ll n = SZ(s)-1;
  if(s[n]=='s'){
    cout << s << "es" << endl;
  }else{
    cout << s << "s" << endl;
  }
}


Compiler output:
a.cc:3:10: fatal error: atcoder/all: No such file or directory
    3 | #include <atcoder/all>
      |          ^~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
typedef long long int ll;
typedef pair<ll,ll> P;
typedef vector<ll> VI;
typedef vector<VI> VVI;
const ll MOD = 1000000007;
const ll INF = 1e18;
#define REP(i,n) for(int i=0;i<n;i++)
#define ALL(v) v.begin(),v.end()

int main(){
	string s; cin >> s;
	cout << s;
	if(s[s.size()-1]=='s')
		cout << "es" << endl;
	else
		cout << "s" << endl;
	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<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:17:13: error: invalid operands of types '<unresolved overloaded function type>' and 'const char [2]' to binary 'operator=='
   17 |   if(s.back == "s") s += "es";
      |      ~~~~~~ ^~ ~~~
      |        |       |
      |        |       const char [2]
      |        <unresolved overloaded function type>
Language: C

#include<iostream>
using namespace std;

int main(){
	int N;
  	int D[100][2];
  	int i;
  	cin>>N;
    for(i=0;i<N;i++) cin>>D[i][0]>>D[i][1];
  	for(i=0;i<N-2;i++){
  	if(D[i][0]==D[i][1]&&D[i+1][0]==D[i+1][1]&&D[i+2][0]==D[i+2][1]){
		cout<<"YES"<<endl;
      	return 0;
    	}
  	}
    cout<<"NO"<<endl;
  	return 0;
}

Compiler output:
main.c:1:9: fatal error: iostream: No such file or directory
    1 | #include<iostream>
      |         ^~~~~~~~~~
compilation terminated.
Language: C++

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

int main(){
  int N;
  cin >> N;
  vector<int> a(N-1),b(N-1);
  for(int i=0;i<N;i++;){
    cin >> a.at(i) >> b.at(i);
    }
  for(int i=0;i<N;i++;){
  	if(a.at(i) == b.at(i)){
    	if(a.at(i+1) == b.at(i+1)){
        	if(a.at(i+2) == b.at(i+2)){
            	cout << "Yes" << endl;
            	}
        	}
    	}
    else {
    	cout << "No" << endl;
    	}
  	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: expected ')' before ';' token
    8 |   for(int i=0;i<N;i++;){
      |      ~               ^
      |                      )
a.cc:8:23: error: expected primary-expression before ')' token
    8 |   for(int i=0;i<N;i++;){
      |                       ^
a.cc:11:22: error: expected ')' before ';' token
   11 |   for(int i=0;i<N;i++;){
      |      ~               ^
      |                      )
a.cc:11:23: error: expected primary-expression before ')' token
   11 |   for(int i=0;i<N;i++;){
      |                       ^
Language: C++

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

int main(){
  int N;
  cin >> N;
  int a,b;
  for(int i=0;i<N;i++;){
    cin >> a.at(i) >> b.at(i);
    }
  for(int i=0;i<N;i++;){
  	if(a.at(i) == b.at(i)){
    	if(a.at(i+1) == b.at(i+1)){
        	if(a.at(i+2) == b.at(i+2)){
            	cout << "Yes" << endl;
            	}
        	}
    	}
    else {
    	cout << "No" << endl;
    	}
  	}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: expected ')' before ';' token
    8 |   for(int i=0;i<N;i++;){
      |      ~               ^
      |                      )
a.cc:8:23: error: expected primary-expression before ')' token
    8 |   for(int i=0;i<N;i++;){
      |                       ^
a.cc:11:22: error: expected ')' before ';' token
   11 |   for(int i=0;i<N;i++;){
      |      ~               ^
      |                      )
a.cc:11:23: error: expected primary-expression before ')' token
   11 |   for(int i=0;i<N;i++;){
      |                       ^