我是caibi!

//进入正文

pn:sa ku la
5-111121235-111115-5-5-111121236-6-6-17-7-6-7-1
111126-15-1111117-5-5-11111236-6-6-17-7-6-7-1
117-5-5-5-7-1117-112343243115-5-6-5-216-7-12342
555555323433113255632555555323431235112243155555532343123511224531235112243121

#include<bits/stdc++.h>
using namespace std;
queue <int> q;
int main(){
	int n,k;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>k;
		if(k==1){
			cin>>k;
			q.push(k);
		}
		if(k==2){
			if(q.empty()) cout<<"ERR_CANNOT_POP"<<endl;
			else q.pop();
		}
		if(k==3){
			if(q.empty()) cout<<"ERR_CANNOT_QUERY"<<endl;
			else cout<<q.pop()<<endl;
		}
		if(k==4){
			cout<<q.size()<<endl;
		}
	}
	return 0;
}

最新消息：liernel messi！

2024-03-17  manchester united                  4-3                        liverpool
2024-10-19  manchester united                  2-1                        brentford
2021-11-11  manchester united                  3-0                        leister city

阵容:

（大更后）

                        101 K·rumerigge            99 R·gulit

                    103 C·ericson                     104 F·de jong

                          104 A·pilro           101 R·hernandez

100 bergemi             101 F·rijcard                99 R·varine            101 B·white
                                     102 P·scomechel
-------------------------------------------------------------------------------------------
104 O·kane
103 S·gerrard
102 J·bellinem
101 C·ronaldo                                                       4-2-2-2
101 R·leao                                                       warvuerna
102 X·alonso                                                         长传反击
99 M·de ligt                                                         球队实力
100 F·varvade                                                          3133
100 O·denpele
99 T·hernandez

pn:only my rg
l:6656655666566556665665566656
r:17556655665566667127542223
175566556655666671266712753
17556655665566667127542223175566556655666671266712753566617535566
11712117123343232153211712117123621717663333332177555554324321776111111123

pn:tokyo eater
6/32221117/17/5/32221117/17/5
7/6/7/6/7/7/6/7/17/6/7/6/7/7/6/7/1/

pn:sparking daydream
5/7/1/543215224323211123561112125332336323
5/7/154321522432121233431434543232143143464327/16/7/125/4321

pn:hi ri ba nn
115511217/44332115511217/215/6/7/115511217/44332115511217/21
5/11121125/4237/125/5/43232117/15/1115/1125/4237/125/5/4323217/1
11551255543214335/6/333217/12531155125554327/2115/6/33325/6/333217/12
5/54323377733235/54323217/1433235/543233777332315544321217/1

pn:hacking to the gate
3116/17/126/6/7/5/232216/34116/17/127/7/7/5/6/
3116/17/126/6/7/5/232216/34116/17/1217/7/5/6/6/6/
31216/4321227/7/5/4/321216/7/1217/1232242334323
33234+54+227/4+37/21326/6/7/7/
54+6524+33234+52333234+54+227/4+37/21326/6/7/7/
54+6524+554+336224+4+3564+5

pn:zenzenzense
111555322211115553212321112321112353532
1115553222111155532123211123211123211
123211123211123511