(I2
I40
I5
(dp0
Vnecklace.%l
p1
(Vnecklace.cpp
p2
S"#include<iostream>\r\n#include<string>\r\n#include<map>\r\nusing namespace std;\r\nint a[32];\r\nint main()\r\n{\r\n    int n,k,br=0,i,j,sz,a1[32];\r\n    string s,s1;\r\n    cin>>n>>k;\r\n    cin>>s;\r\n    for(i=0;i<n;i++)\r\n        a[s[i]-'a']++;\r\n    for(i=0;i<k;i++)\r\n    {\r\n        cin>>s1;\r\n        for(j=0;j<n;j++)\r\n        {\r\n            if(a[s1[0]-'a']!=0&&s1[0]==s[j]){if(s1[1]==s1[0])br--;br+=a[s1[1]-'a'];}\r\n            a[s[j]-'a']--;\r\n        }\r\n        for(j=0;j<n;j++)\r\n        a[s[j]-'a']++;\r\n    }\r\n    cout<<br<<endl;\r\n    return 0;\r\n}\r\n"
p3
tp4
stp5
.