結果
問題 |
No.3102 floor sqrt xor
|
ユーザー |
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提出日時 | 2025-04-11 21:58:47 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,978 bytes |
コンパイル時間 | 3,176 ms |
コンパイル使用メモリ | 277,344 KB |
実行使用メモリ | 7,848 KB |
最終ジャッジ日時 | 2025-04-11 21:58:52 |
合計ジャッジ時間 | 4,443 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 23 WA * 7 |
ソースコード
// #pragma GCC target("avx2") // #pragma GCC optimize("O3") // #pragma GCC optimize("unroll-loops") #include<bits/stdc++.h> using namespace std; using uint = unsigned int; using ll = long long; using ull = unsigned long long; using ld = long double; template<class T> using V = vector<T>; template<class T> using VV = V<V<T>>; template<class T> using VVV = V<VV<T>>; template<class T> using VVVV = VV<VV<T>>; #define rep(i,n) for(ll i=0ll;(i)<(n);(i)++) #define REP(i,a,n) for(ll i=(a);(i)<(n);(i)++) #define rrep(i,n) for(ll i=(n)-1;(i)>=(0ll);(i)--) #define RREP(i,a,n) for(ll i=(n)-1;(i)>=(a);(i)--) const long long INF = (1LL << 60); const long long mod99 = 998244353; const long long mod107 = 1000000007; const long long mod = mod99; #define eb emplace_back #define be(v) (v).begin(),(v).end() #define all(v) (v).begin(),(v).end() #define foa(i,v) for(auto& (i) : (v)) #define UQ(v) sort(be(v)), (v).erase(unique(be(v)), (v).end()) #define UQ2(v,cmp) sort(be(v)), (v).erase(unique(be(v),cmp), (v).end()) #define UQ3(v,cmp) sort(be(v),cmp), (v).erase(unique(be(v)), (v).end()) #define UQ4(v,cmp,cmp2) sort(be(v), cmp), (v).erase(unique(be(v),cmp2), (v).end()) #define LB(x,v) (lower_bound(be(v),(x))-(v).begin()) #define LB2(x,v,cmp) (lower_bound(be(v),(x),(cmp))-(v).begin()) #define UB(x,v) (upper_bound(be(v),(x))-(v).begin()) #define UB2(x,v,cmp) (upper_bound(be(v),(x),(cmp))-(v).begin()) #define dout() cout << fixed << setprecision(20) #define randinit() srand((unsigned)time(NULL)) template<class T, class U> bool chmin(T& t, const U& u) { if (t > u){ t = u; return 1;} return 0; } template<class T, class U> bool chmax(T& t, const U& u) { if (t < u){ t = u; return 1;} return 0; } ll Rnd(ll L=0, ll R=mod99){return rand()%(R-L)+L;} void solve(){ ll n; cin >> n; if(n == 0){ cout << 0 << endl; return; } if(n == 1){ cout << -1 << endl; return; } ll nn = n; ll ans = 0; ll L, R; for(ll i=30; i>=4; i-=2){ ll x = (nn>>i)<<i; ll y = (nn>>i)+1; y <<= i; ll xx = sqrtl(x); ll yy = sqrtl(y); while(yy*yy < y) yy++; // cout << n << " " << nn << " " << xx << " " << yy << endl; if(xx == yy){ cout << -1 << endl; return; } if(xx + 1 == yy){ L = n^xx; R = L+1; ans = L; break; } if(i == 4){ while(xx*xx<x) xx++; ans = xx*xx; } ll j = 30; while((xx>>(j-1)&1)==(yy>>(j-1)&1)) j--; xx = (xx>>j)<<j; nn = n^xx; } rep(i, 20000){ ll aa = sqrtl(ans+i); // cout << n << " " << ans+i << endl; if((aa^(ans+i)) == n){ cout << ans+i << endl; return; } } cout << -1 << endl; } int main(){ cin.tie(nullptr); ios::sync_with_stdio(false); int t=1; cin >> t; rep(i,t) solve(); }