Submission #43874

#	Time	Username	Problem	Language	Result	Execution time	Memory
43874		kdk8361	cmp (balkan11_cmp)	C++17	82 / 100	1995 ms	82548 KiB

cmp

#include "cmp.h"

// >> 8 & 15
// >> 5 & 7
// >> 2 & 7
// & 3
int shif[4] = { 8,5,2,0 };
int bi[4] = { 15,7,7,3 };
int base[4] = { 21,13,5,1 };


void remember(int n) {
	//edit this
	for (int i = 0; i < 4; i++) 
		bit_set(base[i] + ((n >> shif[i]) & bi[i]));
}

int compare(int b) {
	//edit this
	int cur[4] = { 0, };
	for (int i = 0; i < 4; i++) {
		cur[i] = (b >> shif[i]) & bi[i];
	}
	for (int i = 0; i < 4; i++) {
		if (bit_get(base[i] + cur[i])) continue;
		// cur[i] > half
		// l = cur[i] + 1, r = max
		// 여기서 1을 찾으면 a>b
		if (cur[i] > bi[i] / 2) {
			int l = base[i] + cur[i] + 1, r = base[i] + bi[i];
			for (; l <= r; l++) {
				if (bit_get(l)) return -1;
			}
			return 1;
		}
		// cur[i] <= half
		// l = 0, r = cur[i]
		// 여기서 1을 찾으면 b>a
		int l = base[i] + 0, r = base[i] + cur[i] - 1;
		for (; l <= r; l++) {
			if (bit_get(l)) return 1;
		}
		return -1;
	}
	return 0;
}

• Subtask 1: 82 / 100