include<bits/stdc++.h>
using namespace std;
int main(){
int totalMeeting;
cin>>totalMeeting;
vector<pair<int, int>> meetings;
for(int meeting = 0;meeting<totalMeeting;meeting++){
int startTime, endTime;
cin>>startTime>>endTime;
meetings.push_back(make_pair(startTime,endTime));
}
// sort based on start time
sort(meetings.begin(), meetings.end());
int runningMeetingEndtime = meetings[0].second;
for(int i=1;i<totalMeeting;i++){
int currentStarttime,currentEndtime;
currentStarttime = meetings[i].first;
currentEndtime = meetings[i].second;
if(currentStarttime>runningMeetingEndtime){
cout<<"false";
return 0;
}
runningMeetingEndtime = currentEndtime;
}
cout<<"true";
return 0;
}