简单题解

#include<bits/stdc++.h>
using namespace std;
int main(){
long long a,b,c,d;
cin>>a>>b>>c>>d;
if(b<c||b>c&&a>d){
cout<<"Disjoint";
} else if(a<=c&&b>=d){
cout<<"Nested";
} else {
cout<<"Overlap";
}
}