Can someone please tell me why my code is showing this type of undefined behavior
here is the first submission which is getting WA on test 2 (when submitted on c++17) & WA on test 5 (when submitted on c++20)
here is the accepted solution The only thing that I have changed here is
for(int i=0;i<n;i++){
cin>>arr[i];
mp1[arr[i]]++;
if(mp1[arr[i]]>=k){
s1.insert(arr[i]);
}
}
to
for(int i=0;i<n;i++){
cin>>arr[i];
mp1[arr[i]]++;
}
for(int i=0;i<n;i++){
if(mp1[arr[i]]>=k){
s1.insert(arr[i]);
}
}