Submission #394843

#	Time	Username	Problem	Language	Result	Execution time	Memory
394843		snasibov05	Packing Biscuits (IOI20_biscuits)	C++14	0 / 100	1087 ms	332 KiB

biscuits

#include "biscuits.h"

#define int long long

using namespace std;

const int kmax = 65;
const int ymax = 1e5;

vector<int> getBinary(int n){
    vector<int> bin(kmax);
    int k = 0;
    while (n > 0){
        if (n % 2) bin[k] = 1;
        k++;
        n /= 2;
    }
    return bin;
}

bool possible(int x, int y, vector<int> avail){
    vector<int> bin = getBinary(y);

    for (int i = kmax-1; i >= 0; --i) {
        bin[i] *= x;
    }

    for (int i = kmax-1; i >= 0; --i) {
        if (avail[i] < bin[i]) {
            if (i != 0) {
                bin[i] -= avail[i];
                bin[i-1] += bin[i] * 2;
                bin[i] = 0;
            }
            continue;
        }
        avail[i] -= bin[i];
        bin[i] = 0;
    }

    return bin[0] == 0;
}

int count_tastiness(int x, vector<int> a) {
    int ans = 0;

    vector<int> avail(kmax);
    for (int i = a.size()-1; i >= 0; --i) {
        avail[i] = a[i];
    }

    for (int i = 0; i <= ymax; ++i) {
        if (possible(x, i, avail)) ans++;
    }

	return ans;
}

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