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72728abcd @ 2024-11-10 11:37:19

#include<bits/stdc++.h>
using namespace std;
stack<unsigned long long> a;
int main()
{
    int t;
    cin>>t;
    for(int i=0;i<t;i++)
    {
        int n;
        cin>>n;
        for(int j=0;j<n;j++)
        {
            string b;
            cin>>b;
            if(b=="push")
            {
                unsigned long long c;
                cin>>c;
                a.push(c);
            }
            if(b=="pop")
            {
                if(!a.empty())
                {
                    a.pop();
                }
                else
                {
                    cout<<"Empty"<<endl;
                }
            }
            if(b=="query")
            {
                if(!a.empty())
                {
                    cout<<a.top()<<endl;
                }
                else
                {
                    cout<<"Anguei!"<<endl;
                }
            }
            if(b=="size")
            {
                cout<<a.size()<<endl;
            }
            while(!a.empty())
            {
                a.pop();
            }
        }
    }
    return 0;
}

by lan_xing_xing @ 2024-11-10 11:49:26

#include<bits/stdc++.h>
using namespace std;
stack<unsigned long long> a;
int main()
{
    int t;
    cin>>t;
    for(int i=0;i<t;i++)
    {
        int n;
        cin>>n;
        for(int j=0;j<n;j++)
        {
            string b;
            cin>>b;
            if(b=="push")
            {
                unsigned long long c;
                cin>>c;
                a.push(c);
            }
            if(b=="pop")
            {
                if(!a.empty())
                {
                    a.pop();
                }
                else
                {
                    cout<<"Empty"<<endl;
                }
            }
            if(b=="query")
            {
                if(!a.empty())
                {
                    cout<<a.top()<<endl;
                }
                else
                {
                    cout<<"Anguei!"<<endl;
                }
            }
            if(b=="size")
            {
                cout<<a.size()<<endl;
            }
        }
        while(!a.empty())//一组数据结束后再清空栈
        {
            a.pop();
        }
    }
    return 0;
}

by lan_xing_xing @ 2024-11-10 11:50:30

@72728abcd

by 72728abcd @ 2024-11-10 21:15:00

@lan_xing_xing 谢谢

by 72728abcd @ 2024-11-10 21:15:30

咱么俩互吧