Submission #600997

#	Time	Username	Problem	Language	Result	Execution time	Memory
600997		PiejanVDC	Packing Biscuits (IOI20_biscuits)	C++17	0 / 100	1 ms	340 KiB

biscuits

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

int K;
long long X;

vector<long long>v;

vector<map<long long, long long>>mp;

long long dp(int i, long long cnt) {
    if(i == K /*or ((1LL << K) / (1LL << i)) < X*/)
        return 1;
    if(mp[i].count(cnt))
        return mp[i][cnt];
    long long ret = 0;
    if(cnt + v[i] >= X)
        ret = dp(i+1, (cnt + v[i] - X)/2);
    ret += dp(i+1, (cnt+v[i])/2);
    return mp[i][cnt] = ret;
}

long long count_tastiness(long long x, vector<long long>a) {
    X = x;
    v = a;
    K = a.size();
    mp.clear();
    mp.resize(K);
    return dp(0, 0);
}

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