Submission #652940

#	Time	Username	Problem	Language	Result	Execution time	Memory
652940		mychecksedad	Packing Biscuits (IOI20_biscuits)	C++17	9 / 100	42 ms	372 KiB

biscuits

#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
#define pb push_back

int n;
ll count_tastiness(ll x, vector<ll> a){
	n = a.size();
	for(int i = 0; i < n; ++i) a.pb(0);
	n = a.size();
	ll ans = 0;
	int sum = 0;
	for(int i = 0; i < min(n, 62); ++i) sum += (1ll<<i) * a[i];

	if(sum/x <= 100000){
		for(ll y = 0; y <= sum / x; ++y){
			ll c = 0;
			bool ok = 1;
			for(ll j = 0; j < 63; ++j){
				if((1ll<<j)&y){		
					c += a[j];
					if(c<x){
						ok = 0;
						break;
					}
					c-=x;
				}else{
					c += a[j];
				}
				c >>= 1;
			}
			if(ok) ans++;
		}
		return ans;
	}else{
		vector<ll> b = a;
		int mx = -1, mx1 = -1;
		for(int i = 0; i < n - 1; ++i){
			if(b[i] > 1) b[i + 1] += (b[i]-1)/1;
			if(b[i + 1] > 0) mx = i + 1;
		}
		ll ans = 1;
		for(int i = 0; i < n - 1; ++i) if(b[i]>0) ans *= 2;
		for(int i = 0; i < n - 1; ++i){
			a[i + 1] += a[i]/2;
			if(a[i + 1] > 0) mx1 = i + 1;
		}
		if(mx!=mx1) ++ans;
		return ans;
	}
	return ans;
}	

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