|
|
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
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#include <iostream>
using namespace std;
int main()
{
string word;
bool begin = false;
int count = 0;
while(true)
{
cin >> word;
if(cin.eof())
{
break;
}
if(begin)
{
count++;
}
if(word == "beginning")
{
begin = true;
}
else if(word == "end")
{
if(!begin)
{
cout << "wrong sequence" << endl;
return 0;
}
count--;
begin = false;
}
}
if(begin)
{
cout << "wrong sequence" << endl;
return 0;
}
cout << count << endl;
return 0;
}
|
