Submission #310707

#	Time	Username	Problem	Language	Result	Execution time	Memory
310707		apostoldaniel854	Packing Biscuits (IOI20_biscuits)	C++17	100 / 100	37 ms	1024 KiB

biscuits

#include <bits/stdc++.h>

using namespace std;

#define pb push_back
using ll = long long;
using lll = __int128_t;
const int K = 60;
const ll INF = 1e18;


ll count_tastiness (ll _x, vector <ll> a) {
    a.resize (K);
    vector <lll> sum (1 + K);
    vector <lll> dp (1 + K);
    for (int i = 0; i < K; i++)
        sum[i + 1] = sum[i] + (a[i] << i);
    lll x = _x;
    dp[K] = 1;
    for (int i = K; i > 0; i--) {
        lll lb = sum[i], rb = sum[i];
        for (int j = i - 1; j >= 0; j--) {
            if (lb >= (x << j))
                lb -= (x << j);
            if (rb >= sum[j]) {
                if (lb <= rb)
                    dp[j] += dp[i] * (1 + (rb - max (lb, sum[j])) / (x << j));
                rb -= (1 + (rb - sum[j]) / (x << j)) * (x << j);
            }
        }
    }
    return dp[0];
}
/**
int main () {
    int n;
    ll x;
    cin >> n >> x;
    vector <ll> v;
    for (int i = 1; i <= n; i++) {
        ll val;
        cin >> val;
        v.pb (val);
    }
    cout << count_tastiness (x, v) << "\n";
    return 0;
}
**/

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