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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#547375 | #858. GCD vs. XOR | Rafat_Kabir | WA | 1971ms | 180480kb | C++20 | 4.1kb | 2024-09-04 21:08:38 | 2024-09-04 21:08:38 |
Judging History
answer
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#include <time.h>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <cstring>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <iostream>
using namespace __gnu_pbds;
using namespace std;
template <class T>
using Tree =
tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
// to erase in multiset-> less_equal<T> and
// s.erase(s.find_by_order(s.order_of_key(x)))
// lower_bound(x)=>(cannot use the stl lower_bound function)
// ll idx = s.order_of_key(x)
// if(idx == s.size()) -> no lower_bound
// else lb = *s.find_by_order(idx) // as 0-indexing
// idx-1 will give highest value which is strictly less than x
// for upper_bound->do the same with (x+1)
typedef long long ll;
typedef long double ld;
typedef pair<int,int> p32;
typedef pair<ll,ll> p64;
typedef tuple<ll, ll, ll> t64;
typedef vector<t64> vt64;
typedef vector<vt64> vvt64;
typedef pair<double,double> pdd;
typedef vector<ll> v64;
typedef vector<int> v32;
typedef vector<vector<int> > vv32;
typedef vector<vector<ll> > vv64;
typedef vector<vector<p64> > vvp64;
typedef vector<p64> vp64;
typedef vector<p32> vp32;
typedef vector<vector<p32> > vvp32;
typedef vector<bool> vb;
ll mod = 1e9+7, MOD = 998244353;
double eps = 1e-12;
// #define forn(i,e) for(ll i = 0; i < e; i++)
#define FOR(s, e, i) for(int i = s; i <= e; i++)
// #define rforn(i,s) for(ll i = s; i >= 0; i--)
#define ROF(s ,e, i) for(int i = s; i >= e; i--)
#define coutAll(A) for(auto asdafas : A) cout << asdafas << " "; cout << "\n";
#define foutAll(A) for(auto asdafas : A) fout << asdafas << " "; cout << "\n";
#define cinAll(A) for(auto &asdafas : A) cin >> asdafas;
#define finAll(A) for(auto &asdafas : A) fin >> asdafas;
#define minpq priority_queue<ll, v64, greater<ll>>
#define maxpq priority_queue<ll>
#define ln "\n"
#define dbg(x) cout<<#x<<" = "<<x<<ln
#define mp make_pair
#define mt make_tuple
#define pb push_back
#define fi first
#define se second
ll inf = LLONG_MAX;
#define fast_cin() ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define sz(x) ((ll)(x).size())
#define yes cout<<"YES\n"
#define no cout<<"NO\n"
using namespace std;
typedef long long ll;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;
typedef pair<ll, ll> pll;
typedef pair<ll, ll> pii;
#define MAXN 1000001
void solve(int it)
{
// freopen("test.txt", "w", stdout);
// vector<set<int>> A(MAXN);
vv32 A(MAXN);
vv32 same(MAXN);
FOR(1, MAXN-1, i){
ll x = i;
while(x <= MAXN-1){
A[i].pb(x);
x += i;
}
}
// cout << "done\n";
// ll sum = 0;
// FOR(1, MAXN-1, i){
// // cout << i << "->";
// // coutAll(A[i]);
// sum += A[i].size();
// }
// cout << sum;
FOR(1, MAXN-1, i){
for(auto x : A[i]){
if((x <= (x^i)) && __gcd(x, (x^i)) == i){
same[x].pb(x^i);
}
}
// cout << i << "\n";
}
// cout << "done\n";
FOR(1, MAXN-1, i){
sort(all(same[i]));
same[i].erase(unique(all(same[i])), same[i].end());
}
// coutAll(same[100]);
// ll sum =0;
// FOR(1, MAXN-1, i) sum = max(sum, (ll)same[i].size());
// cout << sum;
int t;
cin >> t;
v32 cnt(MAXN);
while(t--){
int n; cin >> n;
v32 arr(n);
FOR(0, n -1 , i){
int x; cin >> x;
arr[i] = x;
cnt[x]++;
}
ll ans = 0;
FOR(1, MAXN-1, i){
for(auto x : same[i]){
ans += 1LL*cnt[x]*cnt[i];
}
}
cout << ans << "\n";
for(auto x : arr) cnt[x]--;
}
}
int main()
{
fast_cin();
ll t = 1;
// cin >> t;
for(int it=1; it<=t; it++)
{
//cout << "Case " << it << ": ";
solve(it);
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 323ms
memory: 166020kb
input:
1 4 2 3 4 3
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: 0
Accepted
time: 447ms
memory: 166176kb
input:
20 43 128 66 452 384 400 441 232 203 228 33 284 156 128 190 197 292 388 31 179 343 147 206 450 284 180 73 273 130 168 250 405 203 235 340 309 28 267 395 152 191 295 463 344 54 48 7 12 37 49 24 5 18 15 37 26 57 53 59 22 10 2 16 36 52 64 1 56 42 38 46 53 7 2 8 60 38 54 11 19 50 20 61 6 50 27 5 26 3 4 ...
output:
9 54 13 7 8 34 47 11 1 102 6 5 37 1 3 8 8 348 15 0
result:
ok 20 numbers
Test #3:
score: -100
Wrong Answer
time: 1971ms
memory: 180480kb
input:
20 1318434 383714 853663 66866 511925 858736 184314 296349 849141 468962 414270 917939 220934 778184 984811 194692 105206 528188 310859 57152 790101 274637 529663 931099 79533 179471 539390 210762 400829 514992 127623 369248 168711 380204 767781 753089 645551 714964 101060 340524 937457 928656 65201...
output:
117581018 124768997 111535890 104007447 146529260 130138457 95540251 97998302 89345045 145484350 123078895 105931664 95038257 98905338 117006667 145887110 136580967 103265343 179238048 999999972775
result:
wrong answer 1st numbers differ - expected: '3032046', found: '117581018'