Submission #328795

#	Time	Username	Problem	Language	Result	Execution time	Memory
328795		seedkin	Key of Impassable Doors (FXCUP3_key)	C11	0 / 100	1 ms	1004 KiB

key

#include "key.h"



int dir[1005];

int count[1005][1005]; // [i][j]: i개 들어갈수있는 j번째 방

int countIdx[1005]; // i개 들어갈수있는 방의 갯수

int maxCount; // 가장 많이 들어갈수있는 방의 수

int report[1005][1005];



void EnsureKeyInfo(int N) {

	for(int i = 0; i<= N; i++) {

		dir[i] = -1;

		countIdx[i] = 0;

		for(int j =0; j<= N; j++) {

			report[i][j] = 0;

		}

	}	

	maxCount = 0;

	for(int i = 1; i <= N; i++) {

		TakeKey(i);

		int cnt = Explore();

		count[cnt][countIdx[cnt]] = i;

		countIdx[cnt]++;

		if(cnt > maxCount) maxCount = cnt;

	}



	for(int i = 2; i <= maxCount; i++) {

		for(int j = 0; j < countIdx[i]; j++) {

			int now = count[i][j];

			if(dir[now] != -1) continue;

			int low = 0;

			int high = countIdx[i-1];

			int mid = (low + high) / 2;

			while(low != mid) {

				TakeKey(now);

				for(int j = low; j < mid; j++) {

					TakeKey(count[i-1][j]);

				}

				int r = Explore();

				if( r == i ) {

					high = mid;

					mid = (low + high) / 2;

				} else {

					low = mid;

					mid = (low + high) / 2;

				}

			}



			dir[now] = count[i-1][low];

			if(countIdx[i-1] != 0 ) {

				TakeKey(now);

				TakeKey(dir[now]);		

			}			

			if(Explore() == i) continue;

			

			dir[now] = -1;

			int find = 1;

			// 지들끼리 문열어줌

			for(int k = 0; k < countIdx[i]; k++) {

				if(k == j) continue;

				if(dir[count[i][k]] != -1) continue;

				if(find == i) break;

				TakeKey(now);

				TakeKey(count[i][k]);

				int r = Explore();

				if(r == i) {

					dir[now] = count[i][k];

					now = dir[now];

					find++;

				}

			}

			dir[now] = count[i][j];

		}

	}



	for(int i = 1; i <= N; i++) {

		int room = i;

		while(room != -1 && report[i][room] == 0) {

			Report(i, room);

			report[i][room] = 1;

			room = dir[room];			

		}

	}

}

• Subtask 1: 0 / 23
• Subtask 2: 0 / 34
• Subtask 3: 0 / 43