Submission #696063

#	Time	Username	Problem	Language	Result	Execution time	Memory
696063		garam1732	Packing Biscuits (IOI20_biscuits)	C++14	12 / 100	1095 ms	340 KiB

biscuits

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

typedef long long ll;

long long count_tastiness(long long x, std::vector<long long> a) {
	if(x == 1) {
        for(int i = (int)a.size()-1; i > 0; i--) if(a[i-1]) a[i-1] += 2*a[i], a[i] = 0;

        ll res = 1;
        for(ll x : a) res *= (x+1);
        return res;
	}

	ll ans = 0;
	for(int v = 0; v <= 100000; v++) {
        vector<ll> b = a;
        int idx = (int)a.size()-1;
        bool ok = true;
        for(int j = 20; j >= 0; j--) {
            if((v>>j)&1) {
                while(idx > j) idx--;

                bool flag = false;
                ll cnt = x;
                while(cnt) {
                    while(idx >= 0 && b[idx] < (1<<(j-idx))) idx--;
                    if(idx == -1) {
                        flag = true;
                        break;
                    }

                    b[idx] -= (1<<(j-idx)); cnt--;
                }

                if(flag) {
                    ok = false;
                    break;
                }
            }
        }

        if(ok) ans++;
	}

	return ans;
}

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