Submission #1178969

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178969		browntoad	Packing Biscuits (IOI20_biscuits)	C++20	44 / 100	251 ms	4072 KiB

biscuits

#include <bits/stdc++.h>
#include "biscuits.h"
using namespace std;
#define ll long long
// #define int ll
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define REP(i, n) FOR(i, 0, n)
#define REP1(i, n) FOR(i, 1, n+1)
#define RREP(i, n) for (int i = (n)-1; i >= 0; i--)
#define pii pair<int, int>
#define f first
#define s second
#define pb push_back
#define ALL(x) (x).begin(), (x).end()
#define SZ(x) (int)((x).size())

const ll maxn = 1e5+5;
const int bloc = 101;

long long count_tastiness(long long x, std::vector<long long> a) {
	ll mxval = 0;
	REP(i, SZ(a)){
		mxval += (1ll<<i) * a[i];
	}
	mxval /= x;
	//ll cnt = 1;

	vector<ll> okie(400000);
	okie[0] = 0;
	ll cur = 0, ptr = 1;
	for (int j = 0; j < 60;j++){
		if (j < SZ(a)) cur += a[j] * (1ll<<j);
		if ((1ll<<j) > mxval) break; 

		ll optr = ptr, v;
		REP(i, optr){
			v = okie[i];
			if (v + (1ll<<j) > mxval) break;
			if ((v + (1ll<<j))*x > cur) break;
			okie[ptr++] = (v|(1ll<<j));
		}
	}
	return ptr;
		//return 0;
}

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