same program gives different outputs everytime I run [closed] - c++

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I tried writing a program that outputs "YES" whether every x value or y value is all the same. Otherwise it gives the output "NO". The logic is, if all the x values maximum value is the same as the all the x values minimum value, than this value has never changed, hence all the x values are the same. Same for the y values.
However, the output sometimes give the correct result, sometimes not (for the same input). Moreover, the outputs are not regular. (For example, 2 correct, 3 wrong, 5 correct, 1 wrong etc.)
Here is my code:
#include <iostream>
#include <climits>
using namespace std;
int main(){
int n;
int minX,minY=INT_MAX;
int maxX,maxY=INT_MIN;
cin>>n;
while(n--){ //for the next n line
int x,y;
cin>>x>>y;
maxX=max(maxX,x);
//cout<<maxX<<" "; //comments I write to find out what the heck is happening
minX=min(minX,x); // This value changes irregularly, which I suspect is the problem.
//cout<<minX<<" ";
maxY=max(maxY,y);
//cout<<maxY<<" ";
minY=min(minY,y);
//cout<<minY<<endl;
}
if(maxX==minX||maxY==minY){ //If the x values or the y values are all the same, true
cout<<"YES";
}
else{
cout<<"NO";
}
return 0;
}
Input:
5
0 1
0 2
0 3
0 4
0 5
Output when it Works (with the couts I commented):
0 0 1 1
0 0 2 1
0 0 3 1
0 0 4 1
0 0 5 1
YES
One of the output when it doesn't work(with the couts I commented)
0 -1319458864 1 1 // Not all the wrong outputs are the same, each wrong output is different than the other wrong output.
0 -1319458864 2 1
0 -1319458864 3 1
0 -1319458864 4 1
0 -1319458864 5 1
NO

Answer 1

In these lines
int minX,minY=INT_MAX;
int maxX,maxY=INT_MIN;
^
minX and maxX is never initialized. This is an UB as defined by the standard. Whatever you read is not predictable - it's usually what'l left on that block of memory by another process.
Do note that = has a higher priority than comma, so the expression is evaluated as
int (minX),(minY=INT_MAX);
Actually the comma has the lowest priority among all operators in C++. Change them to these should fix
int minX=INT_MAX,minY=INT_MAX;
int maxX=INT_MIN,maxY=INT_MIN;
^~~~~~~