Test cases failing

#1

#include
using namespace std;
int main() {
int n,num,ans=0;
cin>>n;
for(int i=0;i<n;i++){
cin>>num;
ans^=num;
}
cout<<ans<<" is present only once";
return 0;
}

#2
#3

Hi… why are u unnecessarily printing this " is present only once";
https://ide.codingblocks.com/s/610464 I have corrected ur code… its passing all test cases now…

#4

confused the required output with explanation

#5

i hope ur doubt is cleared now??

#6

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