Submission #1009546

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1009546	2024-06-27 15:38:16	hahahoang132	XOR Sum (info1cup17_xorsum)	C++17	100 / 100	783 ms	47304 KiB

xorsum

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#include<bits/stdc++.h>
#define ll long long
#define task " "
using namespace std;
const ll N = 1e6 + 5;
const ll mod = 1e9 + 7;
#define bit(x,y) ((x >> y) & 1)
ll a[N],b[N];
pair<ll,int>  tmp[N],ntmp[N];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    ll n;
    cin >> n;
    ll i,j;
    for(i = 1;i <= n;i++) cin >> a[i];
    ll ans =  0;
    for(ll id = 0;id <= 30;id++)
    {
        if(id == 0)
        {
            for(i = 1;i <= n;i++) tmp[i] = {(a[i] % (1LL << (id + 1))),i};
            sort(tmp + 1,tmp + 1 + n);
        }else
        {
            ll sus = 1;
            for(i = 1;i <= n;i++)
            {
                if(!bit(a[tmp[i].second],id))
 
 
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Compilation message (stderr)

xorsum.cpp: In function 'int main()':
xorsum.cpp:16:10: warning: unused variable 'j' [-Wunused-variable]
   16 |     ll i,j;
      |          ^

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