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;
map<string,int>m;
void mapit(string s)
{
if(s.size()<=3)
{
int x=0,ml=1;
for(int i=s.size()-1;i>=0;i--)
{
if(s[i]-'0'>9)
{
m[s]=-1;
return;
}
x+=(s[i]-'0')*ml;
ml*=10;
}
m[s]=x;
}
else m[s]=-1;
}
string s[100009],s2[100009];
int n;
int main()
{
cin>>n;
for(int i=0;i<n;i++)
{
cin>>s[i];
mapit(s[i]);
// cout<<m[s[i]]<<" ";
}
//cout<<"\n";
for(int i=0;i<n;i++)
{
cin>>s2[i];
mapit(s2[i]);
//cout<<m[s2[i]]<<" ";
}
// cout<<"\n";
for(int i=0;i<n;i++)
{
if(m[s[i]]==-1&&m[s2[i]]==-1)continue;
else if(m[s[i]]!=-1&&m[s2[i]]!=-1&&m[s[i]]!=m[s2[i]]){cout<<"NE";/*1 "<<i<<" "<<m[s[i]]<<" "<<m[s2[i]]*/;return 0;}
m[s[i]]=max(m[s[i]],m[s2[i]]);
m[s2[i]]=max(m[s[i]],m[s2[i]]);
}
for(int i=0;i<n;i++)
{
if(m[s[i]]==-1&&m[s2[i]]==-1)continue;
else if(m[s[i]]!=-1&&m[s2[i]]!=-1&&m[s[i]]!=m[s2[i]]){cout<<"NE";return 0;}
m[s[i]]=max(m[s[i]],m[s2[i]]);
m[s2[i]]=max(m[s[i]],m[s2[i]]);
}
cout<<"DA";
}
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