0分求调

zengyanbin @ 2024-09-21 22:35:29

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

stack<int> q;

int main(){
    unsigned long long t, n, x;
    string h;
    cin>>t;
    for(unsigned long long i1=1;i1<=t;i1++){
        cin>>n;
        for(unsigned long long i=1;i<=n;i++){
            cin>>h;
            if(h=="push"){
                cin>>x;
                q.push(x);
            }else if(h=="pop"){
                if(q.empty()){
                    cout<<"Empty"<<endl;
                }else{
                    q.pop();
                }
            }else if(h=="query"){
                if(q.empty()){
                    cout<<"Empty"<<endl;
                }else{
                    q.top();
                }
            }else if(h=="size"){
                cout<<q.size()<<endl;
            }
        }
    }
    return 0;
}

by M_C_Yyyds @ 2024-09-22 13:17:25

@zengyanbin

#include<bits/stdc++.h>
using namespace std;
unsigned long long n,m;
stack<unsigned long long int> s;
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>m;
        for(int j=1;j<=m;j++){
            string h;
            cin>>h;
            if(h=="push"){
                unsigned long long x;
                cin>>x;
                s.push(x);
            }
            if(h=="query"){
                if(s.empty()){
                   cout<<"Anguei!\n";
                }
                else cout<<s.top()<<"\n";
            }
            if(h=="size"){
                cout<<s.size()<<"\n";
            }
            if(h=="pop"){
                if(s.empty()){
                    cout<<"Empty\n";
                }
                else s.pop(); 
            }
        }
    }
    return 0;
}

dong?

by zengyanbin @ 2024-09-27 18:58:50

@M_C_Yyyds 感谢大神回复

by M_C_Yyyds @ 2024-09-27 20:15:38

@zengyanbin 求互关