Language: C++

//include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include<queue>
using namespace std;
//conversion
//------------------------------------------
inline long long toint(string s) {long long v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}
//math
//-------------------------------------------
template<class T> inline T sqr(T x) {return x*x;}
//typedef
//------------------------------------------
typedef long long ll;
typedef long long LL;
typedef vector<int > vi;
typedef vector<long long > VLL;
typedef vector<long long > vll;
typedef vector<string > ves;
typedef vector<char > vech;

typedef pair<long long , long long> pll;
typedef pair<long long , long long> PLL;
typedef map<ll , ll >mll;
typedef map<int , int >mii;
typedef map<char , int >mci;
typedef map<char , ll >mcl;


//container util
//------------------------------------------
#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define VECMAX(x) *max_element(ALL(x))
#define VECMIN(x) *min_element(ALL(x))
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i)
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
//#define MULTIPLE(i,n,k) for(int i = (k) ; i<(n) ; i+=k+1)//倍数ループ
//constant
//------------------------------------------
const double EPS = 1e-10;
const double PI  = acos(-1.0);
//clear memory
#define CLR(a) memset((a), 0 ,sizeof(a))
//debug
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
#define SIZEOF(x) sizeof(x)/sizeof(x[0])

const long long INF = 100000000000000;
const long long NINF = -100000000000000;




//-------------------------------------------------------------




ll gcd(ll x, ll y) { return y ? gcd(y, x % y) : x; }
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
ll nCr(ll n, ll r) {

	if (n == 0) { return 0; }
	if (r == 0) { return 1; }
	if (r == 1) { return n; }
	if (n == r) { return 1; }

	if (r > n / 2) { r = n / 2; }

	ll result = 1;
	for (ll i = 1; i <= r; i++) {
		result *= (n - i + 1) / i;
    }
	return(result);
}


//firstが最大値（最小値） , second が index
pair<LL , LL> maxP(vll a , ll size){
    pair <ll , ll> p;
    vll::iterator iter = max_element(a.begin() , a.end());
    p.first = *iter;
    p.second = distance(a.begin() , iter);
    return p;
}

pair<LL , LL> minP(vll a , ll size){
    pair <ll , ll> p;
    vll::iterator iter = min_element(a.begin() , a.end());
    p.first = *iter;
    p.second = distance(a.begin() , iter);
    return p;
}

ll sumL(vll a , ll size){
    ll sum = 0;
    REP(i,size){
        sum += a[i];

    }
    return sum;
}

 //aのなかにtがいくつあるか
ll counT(VLL a , ll t ){
   
    sort(a.begin(),a.end());
    return upper_bound(a.begin(),a.end(),t)-lower_bound(a.begin() , a.end() , t);
}

#define COUNT(a,b) counT((a),(b))
#define MAX(x) maxP(x,x.size())
#define MIN(x) minP(x,x.size())
#define SUM(x) sumL(x,x.size())

//-------------------DIVIDE----------------------
// DIV[i][j] は　i の j分割数 j == 0 && i != 0 なら 0  
//並び順を区別しない

ll DIV[1000+1][1000+1];
void divide(ll n ,ll m){
    DIV[0][0]= 1;
    FOR(i,1,n+1){
        DIV[i][0] = 0;
    }
    REP(i,n+1){
        DIV[i][1] = 1;
    }
    FOR(i,1,m+1){
        FOR(t,0,n+1){
            if(DIV[t][i] > 0)continue;
            if(t>=i){
                DIV[t][i]=DIV[t-i][i] + DIV[t][i-1];
            }else{
                DIV[t][i] = DIV[t][i-1];
            }
        }
    }
}
#define DIVIDE(a,b) (DIV[a][b] - DIV[a][(b)-1]) //DIV[a-b][b]と同じ


//-------要素を見つける-----------


ll search(vll &a , ll n ){//a内のnのindexを返す
    std::vector<ll>::iterator iter = std::find(a.begin(), a.end(), n);
    size_t index = distance(a.begin(), iter);
    return index;
}



//------------素数判定-----------------


//------------素数判定-----------------
class Judge{
    public:
    vector<bool> IS_PRIME_CONTAINER;
    Judge(int max_):IS_PRIME_CONTAINER(max_, true){
        max = max_;
    }
    int max;//この値-1まで素数判定する
    //メモリを圧迫する可能性あり
    void IsPrime_init(){
        IS_PRIME_CONTAINER[0] = false;
        IS_PRIME_CONTAINER[1] = false;
        FOR(i,2,sqrt(max)+1){
            if(IS_PRIME_CONTAINER[i]){
                FOR(j,2,(max)/i + 1){
                    if(j*i<=max){
                        IS_PRIME_CONTAINER[i*j]=false;
                    }
                }
            }
        }
    }

    inline bool IsPrime(ll num){
        return IS_PRIME_CONTAINER[num];
    }


};


//---------ベルマンフォード----------

class Bellman{
    public:
    vll DIST;
    //max は　頂点の数
    
    Bellman(int max_ ):DIST(max_ , INF){
        max = max_;
        
    }
    ~Bellman(){
         std::vector<ll>().swap(DIST);
    }
    int max;
    //int m;//辺の数
    struct E{
        //classの外で構造体Eを宣言するときは Bellman::E と宣言する
        // from から toは一方通行であることに注意
        ll from , to, cost;
    };
    //はじめに必ず初期化
    void init(){
        REP(i,max){
                DIST[i] = INF;
        }
    }
    
    
    //startはindex(0から)
    //start と 辺の数 m 辺の情報 x を入力

    //頂点a,bが両方向に繋がってるなら、
    //vector<Bellman::E>には(a,b,c)と(b,a,c)の両方を入れないといけない
    void shortest(LL s , vector<E> &x ){
        REP(i,100000){
            DIST[i] = INF;
        }
        DIST[s] = 0;
        while(1){
            bool t = false;
            REP(i,x.size()){
                E h = x[i];
                if(DIST[h.from] != INF && DIST[h.to] > DIST[h.from] + h.cost){
                    DIST[h.to] = DIST[h.from] + h.cost; 
                    t = true;
                }
            }
            if(!t){
                break;
            }
        }
    }
    
    



//-----------MAIN------------//
//注意::::DPの配列、vectorはグローバル変数を使え！！そして引数として与えるな！！
//       Sqrは２乗 sqrtはルート
#define CIN(a) REP(i,a.size())cin >> a[i];

int main(){
    string s;
    cin >> s;
    string t = "";
    map <string , bool> p;
    p["esare"] = true;
    p["resare"] = true;
    p["maerd"] = true;
    p["remaerd"] = true;
    ll v = s.size();
    REP(i,v){
        int ind =   v- i - 1;
        t+= s[ind];
        if(p[t]){
            t = "";
        }
    }
    if(!t.size())cout << "YES" << endl;
    else cout << "NO" <<endl;
   
    return 0;
}







Compiler output:
a.cc:303:2: error: expected '}' at end of input
  303 | }
      |  ^
a.cc:221:14: note: to match this '{'
  221 | class Bellman{
      |              ^
a.cc:303:2: error: expected unqualified-id at end of input
  303 | }
      |  ^