#include <iostream>
#include <stack>
using namespace std;
int main() {
// your code goes here
int n;
cin >> n;
stack<int> mishka;
stack<int> chris;
int a,t;
for (int i=0;i<n;i++){
cin>> a;
cin>>t;
if(i%2==0)
mishka.push(a);
else
chris.push(t);
}
int f,l;
int countM, countC;
for(int i=0;i<n;i++){
f=mishka.top();
mishka.pop();
l=chris.top();
chris.pop();
if(f>l){
countM++;
}else{
countC++;
}
}
if(countM>countC){
cout<<"Mishka";
}else{
cout<<"chris";
}
if(countM==countC){
cout<<"draw";
}
return 0;
}
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