Submission #824078

#	Time	Username	Problem	Language	Result	Execution time	Memory
824078		drdilyor	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	1110 ms	1137248 KiB

biscuits

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

const int T = 120;
long long count_tastiness(long long x, std::vector<long long> a) {
    int k = a.size();
    int ans = 0;
    int sum = 0;
    for (int i = 0; i < k; i++)
        sum += a[i] << i;
    vector<int> vals;
    for (int i = 0; i < k;i ++) {
        for (int j = 0; j < a[i]; j++)
            vals.push_back(1 << i);
    }

    for (int y = 0; y <= sum / x; y++) {
        auto b = a;
        vector<int> done(x, 0);
        int j = 0;
        for (int i = k-1; i >= 0; i--) {
            for (int jj = 0; jj < k; jj++) {
                ll diff = y - done[j];
                ll need = diff >> i;
                ll use = min(need, b[i]);
                b[i] -= use;
                done[j] += use << i;
                j++;
                j %= x;
                if (b[i] == 0) break;
            }
        }
        bool ok = true;
        for (int i : done) ok &= i == y;
        ans += ok;
    }
    return ans;
}

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