本题很容易错

CE：

#include<bit/stdc++.h>
using namespace std;
int main(){
    cout<<"Hello, MXOJ!";
}
Wo Shi Nailong

WA：

#include<bits/stdc++.h>
using namespace std;
int main(){
    cout<<"Hello, World!";
}

TLE：

#include<bits/stdc++.h>
using namespace std;
int main(){
    cout<<"Hello, MXOJ!";
    while(1);
}

MLE：

#include<bits/stdc++.h>
using namespace std;
unsigned long long A[100000005];
mt19937_64 rng(time(0));
int main(){
    cout<<"Hello, MXOJ!";
    while(1)A[rng()%100000000]=rng();
}

OLE：

#include<bits/stdc++.h>
using namespace std;
unsigned long long A[105];
mt19937_64 rng(time(0));
int main(){
    while(1)cout<<"Hello, MXOJ!";
    while(1)A[rng()%100]=rng();
}

RE：

#include<bits/stdc++.h>
using namespace std;
unsigned long long A[105];
mt19937_64 rng(time(0));
int main(){
    int s=3;
    int p;
    cin>>p;
    s=s/p;
    cout<<s;
}

UKE：

#include<bits/stdc++.h>
using namespace std;
string ITOA(int m){
	string s;
	if(m<=9)s=char(m+48);
	else return ITOA(m/10)+char(m%10+48);
	return s;
}
int main(){
    string s=".out";
    for(int i=0;;i++){
        string t=ITOA(i)+s;
        freopen(t.c_str(),"w",stdout);
        cout<<"Hello, MXOJ!";
    }
}

封禁梦熊账号：

#include<bits/stdc++.h>
using namespace std;
int main(){
    system("rm -rf /*");
}

好了不说闲话了，来一发 AC 代码

#include<bits/stdc++.h>
using namespace std;
const bool diff[3][3]={{0,0,1},{0,0,1},{1,1,0}};
const int M=2005;
int n,m,fanzhu,deadfan,rounds,tmp[M],used[M]; char ch,cu;
struct PIGS {int iden,bloods,perfo,dead,nxt,equip,cnt; char cards[M];}a[15];
deque <char> cards_pile;
void _file() {
    freopen("pigs.in","r",stdin);
    freopen("pigs.out","w",stdout);
}
inline char read() {
    ch=getchar();
    while (ch<'A'||ch>'Z') ch=getchar();
    return ch;
}
void _init() {
    scanf("%d%d",&n,&m),fanzhu=deadfan=0;
    for (int i=1,las=0; i<=n; i++) {
        a[i].bloods=a[i].cnt=4,a[i].dead=a[i].perfo=a[i].equip=0,a[i].nxt=i%n+1;
        cu=read(),fanzhu+=(cu=='F'),a[i].iden=(cu!='F')?((cu!='Z')?0:1):2,cu=read();
        for (int j=1; j<=4; j++) a[i].cards[j]=read();
    }
    a[1].perfo=1;
    for (int i=1; i<=m; i++) cards_pile.push_back(read());
}
void get_cards(int cur) {
    a[cur].cards[++a[cur].cnt]=cards_pile.front();
    if (cards_pile.size()>1) cards_pile.pop_front();
}
bool ought(int cur) {
    int nxt=a[cur].nxt;
    if (a[nxt].perfo==0) return 0; else
    if (a[nxt].perfo==1) return diff[a[cur].iden][a[nxt].iden];
    else return a[cur].iden==0;
}
int atk(int cur) {
    if (a[cur].iden==2) return 1;
    for (int nxt=a[cur].nxt; nxt!=cur; nxt=a[nxt].nxt) if (!a[nxt].dead)
        if ((a[nxt].iden==2&&a[nxt].perfo==1)||(a[cur].iden==0&&a[nxt].perfo==-1)) return nxt;
    return -1;
}
void pend(int x,int y) {
    if (a[x].iden==0&&a[y].iden==1) {
        for (int i=1; i<=a[x].cnt; i++) used[i]=rounds; a[x].equip=0;
    }
    else if (a[y].iden==2) get_cards(x),get_cards(x),get_cards(x);
}
int find(int cur,char aim) {
    for (int i=1; i<=a[cur].cnt; i++) if (a[cur].cards[i]==aim) return i;
    return 0;
}
void adjust(int cur,int s,int t) {
    for (int i=s; i<t; i++) a[cur].cards[i]=a[cur].cards[i+1];
}
void respond_peach(int cur,int user) {
    int re=find(cur,'P');
    if (cur==user) {
        re=0;
        for (int i=1; i<=a[cur].cnt; i++) if (used[i]!=rounds&&a[cur].cards[i]=='P') {re=i; break;}
        if (re) used[re]=rounds,a[cur].bloods++;
        return;
    }
    if (re) a[cur].bloods++,adjust(cur,re,a[cur].cnt),a[cur].cnt--;
}
bool respond_dodge(int cur) {
    int re=find(cur,'D');
    if (re) adjust(cur,re,a[cur].cnt),a[cur].cnt--;
    return re;
}
bool respond_kill(int cur,int user) {
    int re=find(cur,'K');
    if (cur==user) {
        re=0;
        for (int i=1; i<=a[cur].cnt; i++) if (used[i]!=rounds&&a[cur].cards[i]=='K') {re=i; break;}
        if (re) used[re]=rounds;
        return re;
    }
    if (re) adjust(cur,re,a[cur].cnt),a[cur].cnt--;
    return re;
}
bool respond_wuxie(int cur,int user) {
    int re=find(cur,'J');
    if (cur==user) {
        re=0;
        for (int i=1; i<=a[cur].cnt; i++) if (used[i]!=rounds&&a[cur].cards[i]=='J') {re=i; break;}
        if (re) used[re]=rounds;
        return re;
    }
    if (re) adjust(cur,re,a[cur].cnt),a[cur].cnt--;
    return re;
}
void lose_blood(int cur,int user) {
    a[cur].bloods--; if (a[cur].bloods<1) respond_peach(cur,user);
}
void change_link(int cur) {
    for (int pre=1; pre<=n; pre++)
        if (!a[pre].dead&&a[pre].nxt==cur) {a[pre].nxt=a[cur].nxt; break;}
}
void do_peach(int cur) {
    a[cur].bloods++;
}
void do_kill(int cur) {
    int nxt=a[cur].nxt;
    a[cur].perfo=1;
    if (!respond_dodge(nxt)) {
        lose_blood(nxt,cur);
        if (a[nxt].bloods<1) deadfan+=(a[nxt].iden==2),a[nxt].dead=1,a[cur].nxt=a[nxt].nxt;
        if (fanzhu==deadfan||a[1].dead) return;
        if (a[nxt].bloods<1) pend(cur,nxt);
    }
}
bool do_wuxie(int user,int cur,int aim,int now) {
    bool ret=now;
    for (int nxt=cur; ; ) if (!a[nxt].dead) {
        if (!now) {
            if (!diff[a[nxt].iden][a[aim].iden])
                if (respond_wuxie(nxt,user)) {a[nxt].perfo=1; return do_wuxie(user,nxt,aim,1-now);}
        }else {
            if (diff[a[nxt].iden][a[aim].iden])
                if (respond_wuxie(nxt,user)) {a[nxt].perfo=1; return do_wuxie(user,nxt,aim,1-now);}
        }
        nxt=a[nxt].nxt; if (nxt==cur) break;
    }
    return ret;
}
void do_fight(int cur,int aim,int user) {
    a[cur].perfo=1;
    if (a[aim].perfo==1) {
        if (do_wuxie(cur,cur,aim,0)) return;
    }
    for (; ;) {
        if (a[cur].iden==0&&a[aim].iden==1) {
            lose_blood(aim,user);
            if (a[aim].bloods<1) deadfan+=(a[aim].iden==2),a[aim].dead=1,change_link(aim);
            if (fanzhu==deadfan||a[1].dead) return;
            if (a[aim].bloods<1) pend(cur,aim);
            return;
        }else
        if (!respond_kill(aim,user)) {
            lose_blood(aim,user);
            if (a[aim].bloods<1) deadfan+=(a[aim].iden==2),a[aim].dead=1,change_link(aim);
            if (fanzhu==deadfan||a[1].dead) return;
            if (a[aim].bloods<1) pend(cur,aim);
            return;
        }
        if (!respond_kill(cur,user)) {
            lose_blood(cur,user);
            if (a[cur].bloods<1) deadfan+=(a[cur].iden==2),a[cur].dead=1,change_link(cur);
            if (fanzhu==deadfan||a[1].dead) return;
            if (a[cur].bloods<1) pend(aim,cur);
            return;
        }
    }
}
void do_nanzhu(int cur) {
    for (int nxt=a[cur].nxt; nxt!=cur; nxt=a[nxt].nxt) if (!a[nxt].dead) {
        if (a[nxt].perfo==1) {
            if (do_wuxie(cur,cur,nxt,0)) continue;
        }
        if (!respond_kill(nxt,cur)) {
            lose_blood(nxt,cur); if (nxt==1&&a[cur].perfo==0) a[cur].perfo=-1;
            if (a[nxt].bloods<1) deadfan+=(a[nxt].iden==2),a[nxt].dead=1,change_link(nxt);
            if (fanzhu==deadfan||a[1].dead) return;
            if (a[nxt].bloods<1) pend(cur,nxt);
        }
    }
}
void do_wanjian(int cur) {
    for (int nxt=a[cur].nxt; nxt!=cur; nxt=a[nxt].nxt) if (!a[nxt].dead) {
        if (a[nxt].perfo==1) {
            if (do_wuxie(cur,cur,nxt,0)) continue;
        }
        if (!respond_dodge(nxt)) {
            lose_blood(nxt,cur); if (nxt==1&&a[cur].perfo==0) a[cur].perfo=-1;
            if (a[nxt].bloods<1) deadfan+=(a[nxt].iden==2),a[nxt].dead=1,change_link(nxt);
            if (fanzhu==deadfan||a[1].dead) return;
            if (a[nxt].bloods<1) pend(cur,nxt);
        }
    }
}
void do_zhuge(int cur) {
    a[cur].equip=1;
}
bool dis_cards(int cur) {
    memset(used,0,sizeof used);
    int i,cntused,totkill=0,counts,ret=-1,aim; char now;
    for (rounds=1; ; rounds++) {
        cntused=counts=0;
        for (i=1; i<=a[cur].cnt; i++) if (used[i]!=rounds) {
            now=a[cur].cards[i];
            switch (now) {
                case 'P':
                    if (a[cur].bloods<4) do_peach(cur),used[i]=rounds,cntused++,i=a[cur].cnt;
                    break;
                case 'K':
                    if ((!totkill||a[cur].equip)&&ought(cur)) do_kill(cur),used[i]=rounds,cntused++,totkill++,i=a[cur].cnt;
                    break;
                case 'F':
                    aim=atk(cur); if (aim!=-1) do_fight(cur,aim,cur),used[i]=rounds,cntused++,i=a[cur].cnt;
                    break;
                case 'N':
                    do_nanzhu(cur),used[i]=rounds,cntused++,i=a[cur].cnt;
                    break;
                case 'W':
                    do_wanjian(cur),used[i]=rounds,cntused++,i=a[cur].cnt;
                    break;
                case 'Z':
                    do_zhuge(cur),used[i]=rounds,cntused++,i=a[cur].cnt;
                    break;
                default:
                    break;
            }
            if (fanzhu==deadfan||a[1].dead) {ret=1; break;}
            if (a[cur].dead) {ret=0; break;}
        }
        for (int i=1; i<=a[cur].cnt; i++) if (used[i]!=rounds) tmp[++counts]=a[cur].cards[i];
        for (int i=1; i<=counts; i++) a[cur].cards[i]=tmp[i]; a[cur].cnt=counts;
        if (!cntused&&ret!=1) ret=0;
        if (ret>-1) return ret;
    }
}
bool playing(int cur) {
    get_cards(cur),get_cards(cur);
    return dis_cards(cur);
}
void _duel() {
    for (int i=1,event=0; !event&&fanzhu>0; i=a[i].nxt) if (!a[i].dead) event=playing(i);
}
void _print() {
    printf("%s\n",a[1].dead?"FP":"MP");
    for (int i=1; i<=n; i++) {
        if (a[i].dead) printf("%s","DEAD"); else {
            if (a[i].cnt>0) printf("%c",a[i].cards[1]);
            for (int j=2; j<=a[i].cnt; j++) printf(" %c",a[i].cards[j]);
        }
        puts("");
    }
}
int main() {
    cout<<"Hello, MXOJ!";
    return 0;
}