Submission #649372

#	Time	Username	Problem	Language	Result	Execution time	Memory
649372		DangerNoodle7591	XOR Sum (info1cup17_xorsum)	C++17	0 / 100	78 ms	4180 KiB

xorsum

#include <iostream>
using namespace std;
int var[10000];
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	int n;cin>>n;
	int arr[n];
	int sin=n;
	int x=0;
	for(int i=0;i<sin;i++){
		int a;
		cin>>a;
		if(var[a]){
			var[a]=0;
			i=i-2;
			sin=sin-2;
			x=x^(a+a);
			continue;
		}
		arr[i]=a;
		var[arr[i]]=1;
	}
	for(int i=0;i<sin;i++){
		for(int j=i;j<sin;j++){
			x=x^(arr[i]+arr[j]);
		}
	}
	cout<<x<<"\n";
}

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 21
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23