#include<bits/stdc++.h> using namespace std; int main(){ string c; int he=0; int m; int n; cin>>n>>m; string o; cin>>o; int y=o.size(); for(int i=0;i<m;i++){ cin>>c; for(int P=0;P<y-2;P++){ if(c[0]==o[P]&&c[1]==o[P+1]&&c[2]==o[P+2]){ he++; } } if(c[0]==o[y-2]&&c[1]==o[y-1]&&c[2]==o[0]){ he++; } else if(c[0]==o[y-1]&&c[1]==o[0]&&c[2]==o[1]){ he++; } } cout<<he; return 0; }😕