題目:
https://onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=866&page=show_problem&problem=4953
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
| #include <iostream>
#include <stack>
using namespace std;
int main(){
int n;
string cmd, name;
stack<string> slept;
cin >> n;
while(n--){
cin >> cmd;
if(cmd == "Sleep"){
cin >> name;
slept.push(name);
}
else if(cmd == "Test"){
if(!slept.empty()) cout << slept.top() << '\n';
else cout << "Not in a dream\n";
}
else{
if(!slept.empty()) slept.pop();
}
}
return 0;
}
|
