This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
using namespace std;
const int N=1e5+7;
map<string, int> tt, ht;
int n, q, mt, mh;
string s[N], a[N], b[N];
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin>>n>>q;
for(int i=1; i<=n; i++) cin>>s[i];
for(int i=1; i<=q; i++)
{
cin>>a[i]>>b[i];
int v=a[i].size(), u=b[i].size();
mt=max(mt, v);
mh=max(mh, u);
}
for(int i=1; i<=n; i++)
{
int v=s[i].size();
string re="";
for(int j=0; j<min(v, mt); j++)
{
re+=s[i][j];
tt[re]++;
}
}
for(int i=1; i<=n; i++)
{
int v=s[i].size();
string re="";
for(int j=v-1; j>=v-min(v,mh); j--)
{
re=s[i][j]+re;
ht[re]++;
}
}
for(int i=1; i<=q; i++)
{
cout<<min(tt[a[i]], ht[b[i]])<<"\n";
}
}
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