Submission #525177

#TimeUsernameProblemLanguageResultExecution timeMemory
525177armashkaXOR (IZhO12_xor)C++17
0 / 100
1 ms332 KiB
#include <bits/stdc++.h> #include <ext/pb_ds/assoc_container.hpp> #include <ext/pb_ds/tree_policy.hpp> #pragma comment(linker, "/stack:200000000") #pragma GCC optimize("Ofast") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #define fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr); #define file(s) freopen(s".in", "r", stdin);freopen(s".out", "w", stdout); #define all(v) v.begin(),v.end() #define rall(v) v.rbegin(),v.rend() #define pb push_back #define sz size() #define ft first #define sd second using namespace std; typedef long long ll; typedef pair<ll, ll> pll; typedef unsigned long long ull; const int N = 1e6 + 10; const int M = 1e3 + 5; const ll inf = 1e18; const ll mod = 1e9 + 7; const double Pi = acos(-1); ll binpow(ll x, ll ti) { ll res = 1;while (ti){if(ti & 1)res *= x;x *= x;ti >>= 1; x %= mod; res %= mod;} return res;} ll binmul(ll x, ll ti) { ll res = 0;while (ti){if(ti & 1)res += x;x += x;ti >>= 1; x %= mod; res %= mod;} return res;} ll nok(ll a, ll b) { return (a*b)/__gcd(abs(a),abs(b)) * (a*b > 0 ? 1 : -1); } bool odd(ll n) { return (n % 2 == 1); } bool even(ll n) { return (n % 2 == 0); } ll n, x, a[N], pr[N], sf[N]; const void solve(/*Armashka*/) { cin >> n >> x; for (int i = 1; i <= n; ++ i) cin >> a[i]; for (int i = 1; i <= n; ++ i) pr[i] = pr[i - 1] ^ a[i]; for (int i = n; i >= 1; -- i) sf[i] = max(sf[i + 1], pr[i]); ll len = -1, pos = -1; for (int i = 1; i <= n; ++ i) { int l = i, r = n, j = -1; while (l <= r) { int mid = (l + r) / 2; if (sf[mid] >= (x ^ pr[i - 1])) l = mid + 1, j = mid; else r = mid - 1; } if (j == -1) continue; int res = (j - i + 1); if (res > len) { len = res; pos = i; } } cout << pos << " " << len << "\n"; } signed main() { srand(time(NULL)); fast; // file(""); int tt = 1; // cin >> tt; while (tt --) { solve(); } } // Uaqyt, otedi, ketedi, mulde bilinbei, ulger // Kunder seni kutpeidi, susyz ospeidi gulder

Compilation message (stderr)

xor.cpp:5: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    5 | #pragma comment(linker, "/stack:200000000")
      |
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