Submission #1189757

#TimeUsernameProblemLanguageResultExecution timeMemory
1189757countlessPacking Biscuits (IOI20_biscuits)C++20
42 / 100
1096 ms24032 KiB
#include "biscuits.h" #include <bits/stdc++.h> using namespace std; typedef long long ll; typedef long double ld; const ll MOD = 998244353; const ll INF = 1e18; const ld EPS = 1e-12; #define endl "\n" #define sp <<" "<< #define REP(i, a, b) for(ll i = a; i < b; i++) #define dbg(x) cout << #x << " = " << x << endl #define mp make_pair #define pb push_back #define fi first #define se second #define fast_io() ios_base::sync_with_stdio(false); cin.tie(NULL) #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() #define sz(x) ((ll)(x).size()) struct custom_hash { static uint64_t splitmix64(uint64_t x) { // http://xorshift.di.unimi.it/splitmix64.c x += 0x9e3779b97f4a7c15; x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9; x = (x ^ (x >> 27)) * 0x94d049bb133111eb; return x ^ (x >> 31); } size_t operator()(uint64_t x) const { static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count(); return splitmix64(x + FIXED_RANDOM); } }; template <typename Key, typename Value> using hash_map = unordered_map<Key, Value, custom_hash>; mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); // uniform_int_distribution<int>(a, b)(rng); // shuffle(all(a), rng); ll count_tastiness(ll x, vector<ll> a) { while (a.size() < 61) a.push_back(0); map<ll, ll> curr, next; curr[0] = 1; REP(i, 0, 61) { for (auto &y : curr) { ll cur = a[i] + y.first; ll nxt = cur / 2; next[nxt] += y.second; if (cur >= x) { nxt = (cur - x) / 2; next[nxt] += y.second; } } curr.swap(next); next.clear(); } ll ans = 0; for (auto &y : curr) { ans += y.second; } return ans; } // signed main() { // ll t; cin >> t; // while (t--) { // ll k, x; cin >> k >> x; // vector<ll> a(k); // REP(i, 0, k) // cin >> a[i]; // cout << count_tastiness(x, a) << endl; // } // }
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