Submission #479302

#	Time	Username	Problem	Language	Result	Execution time	Memory
479302		khoabright	Packing Biscuits (IOI20_biscuits)	C++17	9 / 100	1185 ms	1386952 KiB

biscuits

#include "biscuits.h"
#include <bits/stdc++.h>
using namespace std;

//#define int long long 
#define ff first
#define ss second
#define pii pair<int, int>
#define all(x) x.begin(), x.end()
#define rep(i, a, b) for (int i = (int)a; i <= (int)b; ++i)
#define rep1(i, a, b) for (int i = (int)a; i >= (int)b; --i)
#define mp make_pair
#define vii vector<vector<int>>
#define ll long long 

unordered_map<ll, ll> g;

ll cal_g(ll n, ll x, vector<ll> &s) {
    //cout<<"n="<<n<<'\n';
    if (n <= 0) return 0;
    if (n == 1) return 1;

    ll &tmp = g[n];
    if (tmp > 0) return tmp;

    int i = log2(n - 1);

    tmp = cal_g(1ll << i, x, s) + cal_g(min(n, 1 + s[i] / x) - (1ll << i), x, s); 
    return tmp;
}

ll count_tastiness(ll x, vector<ll> a) {
    g.clear();
    int sz = 0;
    while (a.size() < 61) a.push_back(0);
    vector<ll> s(61);
    rep(i, 0, 60) {
        if (i) s[i] = s[i - 1];
        s[i] += a[i] * (1ll << i);
    }

    return cal_g(s[60] + 1, x, s);
}

// int main() {
//     ios_base::sync_with_stdio(0);
//     cin.tie(0); //cout.tie(0);
//     int t; cin >> t;
//     while(t--){
//         long long x, k;
//         vector<long long> v;
//         cin >> k >> x;
//         v.resize(k);
//         rep(i, 0, k - 1) {
//             cin >> v[i];
//         }
//         cout << count_tastiness(x, v) << '\n';
//     }
// }

Compilation message (stderr)

biscuits.cpp: In function 'long long int count_tastiness(long long int, std::vector<long long int>)':
biscuits.cpp:34:9: warning: unused variable 'sz' [-Wunused-variable]
   34 |     int sz = 0;
      |         ^~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23