Submission #479997

#	Time	Username	Problem	Language	Result	Execution time	Memory
479997		stefantaga	Packing Biscuits (IOI20_biscuits)	C++14	12 / 100	2 ms	332 KiB

biscuits

#include "biscuits.h"
#include <cassert>
#include <cstdio>

using namespace std;
long long sum=0,cop[65],din[65];
long long brut(long long x,std::vector <long long> a )
{
    int k=a.size();
    long long p=1,suma=0,lim,t,ok1;
    for (int i=0;i<k;i++)
    {
        suma=suma+p*a[i];
        p=p*2;
    }
    long long lim2=suma/x,sum1=0;
    for (lim=0;lim<=lim2;lim++)
    {
        for (t=0;t<k;t++)
        {
            cop[t]=a[t];
        }
        p=1;
        ok1=1;
        for (t=0;t<k;t++)
        {
            if ((lim&p)!=0)
            {
                cop[t]=cop[t]-x;
                if (cop[t]<0)
                {
                    ok1=0;
                    break;
                }
            }
            cop[t+1]+=(cop[t]/2);
            p=p*2;
        }
        sum1=sum1+ok1;
    }
	return sum1;
}
void merge_biscuits(vector<long long> &a) {
    while(a.size()<61) a.push_back(0);
    for(int i=0; i<(int)a.size(); i++) {
        if(a[i]>2) {
            a[i+1] += (a[i]-1)/2;
            a[i] = (a[i]%2 ? 1 : 2);
        }
    }
}

long long count_tastiness(long long x, std::vector<long long> a) {
    merge_biscuits(a);
    long long ans = 1;
    long long current = 0;
    for(int i=60; i>=0; i--) {
        if(a[i]==0) {
            ans *= (current+1);
            current = 0;
        } else {
            current = current*2 + a[i];
        }
    }
    ans *= (current+1);
    return ans;
}

#ifdef HOME
int main() {
	int q;
	assert(scanf("%d", &q) == 1);
	vector<int> k(q);
	vector<long long> x(q);
	vector<vector<long long>> a(q);
	vector<long long> results(q),results2(q);
	for (int t = 0; t < q; t++) {
		assert(scanf("%d%lld", &k[t], &x[t]) == 2);
		a[t] = vector<long long>(k[t]);
		for (int i = 0; i < k[t]; i++) {
			assert(scanf("%lld", &a[t][i]) == 1);
		}
	}
	fclose(stdin);

	for (int t = 0; t < q; t++) {
        results2[t]= brut(x[t],a[t]);
		results[t] = count_tastiness(x[t], a[t]);
	}
	for (int t = 0; t < q; t++) {
		printf("%lld\n", results[t]);
	}
	for (int t = 0; t < q; t++) {
		printf("%lld\n", results2[t]);
	}

	fclose(stdout);
	return 0;
}
#endif // HOME

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