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我是蒟蒻1111
#include<bits/stdc++.h> using namespace std; int main() { int n; string wuhu; cin>>n; while(n--) { stack<int> s; int m,n; cin>>m; for(int i=1;i<=m;i++) { cin>>wuhu; if(wuhu=="pop") { if(s.empty()) cout<<"Empty"<<endl; else{ cout<<s.top()<<endl;//先入后出 s.pop(); //记得弹出 } } else { int a; cin>>a; s.push(a); } } } return 0; }
Information
- ID
- 330
- Time
- 1000ms
- Memory
- 256MiB
- Difficulty
- 2
- Tags
- # Submissions
- 152
- Accepted
- 48
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