Submission #498751

#TimeUsernameProblemLanguageResultExecution timeMemory
498751ahmedfouadnewXOR Sum (info1cup17_xorsum)C++17
0 / 100
242 ms4784 KiB
#include<bits/stdc++.h> using namespace std; #define int long long #define pb push_back int a[5005]; signed main() { int n; cin>>n; for(int i=0;i<n;i++) { int x; cin>>x; a[x]++; } int ans=0; for(int i=0;i<=4000;i++) { for(int j=0;j<=4000;j++) { if((a[i]*a[j])%2==0) continue; ans^=(i+j); } } cout<<ans<<endl; }
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