Submission #24871

#	Time	Username	Problem	Language	Result	Execution time	Memory
24871		khsoo01	Broken Device (JOI17_broken_device)	C++11	51 / 100	62 ms	2836 KiB

Anna

#include "Annalib.h"
typedef long long ll;
int br[155], cur;

int idx[9] = {7, 5, 4, 3, 6, 2, 1, 0};
int val[9] = {1, 3, 2, 0, 0, 1, 0, 0};
int mod[9] = {4, 4, 4, 4, 2, 2, 2, 1};

void Write (int X) {
	for(int i=2;i>=0;i--) {
		Set(cur+i, X%2);
		X /= 2;
	}
	cur += 3;
}

void Anna( int N, long long X, int K, int P[] ) {
	for(int i=0;i<N;i++) br[i] = 0;
	for(int i=0;i<K;i++) br[P[i]] = 1;
	cur = 0;
	for(int i=0;i<N;i+=3) {
		int tmp = 7 - (4*br[i] + 2*br[i+1] + br[i+2]);
		for(int j=0;j<8;j++) {
			if((tmp&idx[j])==idx[j] && X%mod[j]==val[j]) {
				Write(idx[j]);
				X /= 1ll*mod[j];
				break;
			}
		}
	}
}

Bruno

#include "Brunolib.h"

int idx[9] = {7, 5, 4, 3, 6, 2, 1, 0};
int val[9] = {1, 3, 2, 0, 0, 1, 0, 0};
int mod[9] = {4, 4, 4, 4, 2, 2, 2, 1};

long long Bruno( int N, int A[] ){
	long long ans = 0;
	for(int i=N-3;i>=0;i-=3) {
		int cur = 4*A[i]+2*A[i+1]+A[i+2];
		for(int j=0;j<8;j++) {
			if(cur == idx[j]) {
				ans *= 1ll*mod[j];
				ans += 1ll*val[j];
			}
		}
	}
	return ans;
}

• Subtask 1: 51 / 100