(I7
I89
I149
(dp0
Vmetro.%l
p1
(Vmetro.cpp
p2
S'#include<bits/stdc++.h>\r\nusing namespace std;\r\n\r\nint a[10000]={0};\r\n\r\nint main ()\r\n{\r\n    int N,M,A,B;\r\n\r\n    cin>>N>>M;\r\n\r\n    for (int i=0,k;i<M;i++)\\\r\n    {\r\n        cin >> k;\r\n        a[k]=1;\r\n    }\r\n\r\n    cin >> A >> B;\r\n\r\n    if (a[A]==1 and a[B]==1)\r\n    {\r\n        int k=0;\r\n        for (int i=A;i<B;i++)\r\n        {\r\n            if (a[i]==1)k+=2;\r\n        }\r\n        cout <<k;\r\n    }\r\n\r\n    return 0;\r\n}\r\n'
p3
tp4
stp5
.