시간 제한 메모리 제한 제출 정답 맞은 사람 정답 비율
1 초 512 MB 201 101 86 53.086%

문제

홍수의 발생으로 인해 도시의 도로들이 유실되어 많은 ICP(International Computational Plan) 시민들이 불편을 겪고 있다. 도시는 아래와 같은 격자 형태로 표현이 된다고 가정하자. 검정색 단위 격자가 ‘단위도로’를 의미하며 흰색 단위 격자는 도로가 없었거나 유실된 상태를 의미한다. X로 표시된 단위 격자는 도로를 건설할 수 없는 곳을 의미한다.

도시의 차들은 단위 도로 상에서 가로나 세로 방향으로만 움직인다고 가정했을 때 도시의 기능을 회복시키기 위해 맨 왼쪽 위 단위 격자에서 맨 오른쪽 아래 단위 격자로 도시의 차들이 가는 경로를 만들기 위해 필요한 최소한의 도로 건설 비용을 계산하고자 한다. 단위 도로 하나를 건설하기 위해 1 또는 2 의 비용이 소요된다고 가정하자. 위 그림에서는 흰색 단위 격자에 단위 도로 하나를 건설하기 위해서는 1 의 비용이 든다고 가정한다.

위와 같이 회색으로 표시된 단위 도로들을 4 의 비용으로 건설하면 목적을 달성할 수 있다.

도시가 위와 같이 격자 형태로 주어졌을 때 맨 왼쪽 위 단위 격자에서 맨 오른쪽 아래 단위 격자로 가는 경로를 만들기 위해 필요한 최소 도로 건설 비용을 구하는 프로그램을 작성하시오.

입력

입력은 표준입력을 사용한다. 첫 번째 줄에 도시를 표현하는 격자의 행과 열의 크기를 각각 나타내는 두 개의 양의 정수 m, n (1 ≤ m, n ≤ 1,000, 1 < m×n)이 주어진다. 다음 m개의 각 줄에 격자의 각 열의 정보를 나타내는 n개의 숫자가 주어진다. 각 열의 정보는 정수 0, 1, 2, -1 로 나타내며 0 은 단위도로가 이미 존재하는 것을, 즉, 도로에 유실이 없는 상태, 1 은 단위 도로가 없고 1 의 비용으로 도로를 건설할 수 있는 단위 격자, 2 는 단위 도로가 없고 2 의 비용으로 도로를 건설할 수 있는 단위 격자를 의미한다. -1 은 X로 표시된 단위 격자로 그 위치에 단위 도로를 건설할 수 없는 상태를 의미한다.

출력

출력은 표준출력을 사용한다. 도시의 맨 왼쪽 위 단위 격자에서 맨 오른쪽 아래 단위 격자로 가는 경로를 만들기 위해 필요한 최소한의 도로 건설 비용을 한 줄에 출력한다. 해당 경로를 건설할 수 없을 때는 -1 을 출력한다.

예제 입력 1

2 3
1 -1 -1
1 -1 2

예제 출력 1

-1

예제 입력 2

2 3
-1 1 -1
1 1 -1

예제 출력 2

-1

예제 입력 3

6 8
0 0 1 1 -1 1 0 1
1 0 1 1 1 1 1 1
1 0 0 -1 1 0 1 1
1 -1 1 1 1 0 1 1
1 0 1 0 0 0 1 1
1 0 0 0 1 1 1 0

예제 출력 3

4

예제 입력 4

6 8
2 0 1 1 -1 1 0 1
1 0 1 1 1 1 1 1
1 0 0 -1 1 0 1 1
1 -1 2 1 1 0 1 1
1 0 2 0 0 0 -1 1
1 0 0 0 1 2 2 0

예제 출력 4

8
[{"problem_id":"20046","problem_lang":"0","title":"Road Reconstruction","description":"<p>\ud64d\uc218\uc758 \ubc1c\uc0dd\uc73c\ub85c \uc778\ud574 \ub3c4\uc2dc\uc758 \ub3c4\ub85c\ub4e4\uc774 \uc720\uc2e4\ub418\uc5b4 \ub9ce\uc740 ICP(International Computational Plan) \uc2dc\ubbfc\ub4e4\uc774 \ubd88\ud3b8\uc744 \uacaa\uace0 \uc788\ub2e4. \ub3c4\uc2dc\ub294 \uc544\ub798\uc640 \uac19\uc740 \uaca9\uc790 \ud615\ud0dc\ub85c \ud45c\ud604\uc774 \ub41c\ub2e4\uace0 \uac00\uc815\ud558\uc790. \uac80\uc815\uc0c9 \ub2e8\uc704 \uaca9\uc790\uac00 &lsquo;\ub2e8\uc704\ub3c4\ub85c&rsquo;\ub97c \uc758\ubbf8\ud558\uba70 \ud770\uc0c9 \ub2e8\uc704 \uaca9\uc790\ub294 \ub3c4\ub85c\uac00 \uc5c6\uc5c8\uac70\ub098 \uc720\uc2e4\ub41c \uc0c1\ud0dc\ub97c \uc758\ubbf8\ud55c\ub2e4. X\ub85c \ud45c\uc2dc\ub41c \ub2e8\uc704 \uaca9\uc790\ub294 \ub3c4\ub85c\ub97c \uac74\uc124\ud560 \uc218 \uc5c6\ub294 \uacf3\uc744 \uc758\ubbf8\ud55c\ub2e4.<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/df7d65d1-1d60-4456-9c6e-a6803e331039\/-\/preview\/\" style=\"width: 277px; height: 181px;\" \/><\/p>\r\n\r\n<p>\ub3c4\uc2dc\uc758 \ucc28\ub4e4\uc740 \ub2e8\uc704 \ub3c4\ub85c \uc0c1\uc5d0\uc11c \uac00\ub85c\ub098 \uc138\ub85c \ubc29\ud5a5\uc73c\ub85c\ub9cc \uc6c0\uc9c1\uc778\ub2e4\uace0 \uac00\uc815\ud588\uc744 \ub54c \ub3c4\uc2dc\uc758 \uae30\ub2a5\uc744 \ud68c\ubcf5\uc2dc\ud0a4\uae30 \uc704\ud574 \ub9e8 \uc67c\ucabd \uc704 \ub2e8\uc704 \uaca9\uc790\uc5d0\uc11c \ub9e8 \uc624\ub978\ucabd \uc544\ub798 \ub2e8\uc704 \uaca9\uc790\ub85c \ub3c4\uc2dc\uc758 \ucc28\ub4e4\uc774 \uac00\ub294 \uacbd\ub85c\ub97c \ub9cc\ub4e4\uae30 \uc704\ud574 \ud544\uc694\ud55c \ucd5c\uc18c\ud55c\uc758 \ub3c4\ub85c \uac74\uc124 \ube44\uc6a9\uc744 \uacc4\uc0b0\ud558\uace0\uc790 \ud55c\ub2e4. \ub2e8\uc704 \ub3c4\ub85c \ud558\ub098\ub97c \uac74\uc124\ud558\uae30 \uc704\ud574 1 \ub610\ub294 2 \uc758 \ube44\uc6a9\uc774 \uc18c\uc694\ub41c\ub2e4\uace0 \uac00\uc815\ud558\uc790. \uc704 \uadf8\ub9bc\uc5d0\uc11c\ub294 \ud770\uc0c9 \ub2e8\uc704 \uaca9\uc790\uc5d0 \ub2e8\uc704 \ub3c4\ub85c \ud558\ub098\ub97c \uac74\uc124\ud558\uae30 \uc704\ud574\uc11c\ub294 1 \uc758 \ube44\uc6a9\uc774 \ub4e0\ub2e4\uace0 \uac00\uc815\ud55c\ub2e4.<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/d9529215-aabf-4b65-875a-94bd6752386c\/-\/preview\/\" style=\"width: 273px; height: 179px;\" \/><\/p>\r\n\r\n<p>\uc704\uc640 \uac19\uc774 \ud68c\uc0c9\uc73c\ub85c \ud45c\uc2dc\ub41c \ub2e8\uc704 \ub3c4\ub85c\ub4e4\uc744 4 \uc758 \ube44\uc6a9\uc73c\ub85c \uac74\uc124\ud558\uba74 \ubaa9\uc801\uc744 \ub2ec\uc131\ud560 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>\ub3c4\uc2dc\uac00 \uc704\uc640 \uac19\uc774 \uaca9\uc790 \ud615\ud0dc\ub85c \uc8fc\uc5b4\uc84c\uc744 \ub54c \ub9e8 \uc67c\ucabd \uc704 \ub2e8\uc704 \uaca9\uc790\uc5d0\uc11c \ub9e8 \uc624\ub978\ucabd \uc544\ub798 \ub2e8\uc704 \uaca9\uc790\ub85c \uac00\ub294 \uacbd\ub85c\ub97c \ub9cc\ub4e4\uae30 \uc704\ud574 \ud544\uc694\ud55c \ucd5c\uc18c \ub3c4\ub85c \uac74\uc124 \ube44\uc6a9\uc744 \uad6c\ud558\ub294 \ud504\ub85c\uadf8\ub7a8\uc744 \uc791\uc131\ud558\uc2dc\uc624.<\/p>\r\n","input":"<p>\uc785\ub825\uc740 \ud45c\uc900\uc785\ub825\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \uccab \ubc88\uc9f8 \uc904\uc5d0 \ub3c4\uc2dc\ub97c \ud45c\ud604\ud558\ub294 \uaca9\uc790\uc758 \ud589\uacfc \uc5f4\uc758 \ud06c\uae30\ub97c \uac01\uac01 \ub098\ud0c0\ub0b4\ub294 \ub450 \uac1c\uc758 \uc591\uc758 \uc815\uc218 <em>m<\/em>, <em>n<\/em> (1 &le; <em>m<\/em>, <em>n<\/em> &le; 1,000, 1 &lt; m&times;n)\uc774 \uc8fc\uc5b4\uc9c4\ub2e4. \ub2e4\uc74c <em>m<\/em>\uac1c\uc758 \uac01 \uc904\uc5d0 \uaca9\uc790\uc758 \uac01 \uc5f4\uc758 \uc815\ubcf4\ub97c \ub098\ud0c0\ub0b4\ub294 <em>n<\/em>\uac1c\uc758 \uc22b\uc790\uac00 \uc8fc\uc5b4\uc9c4\ub2e4. \uac01 \uc5f4\uc758 \uc815\ubcf4\ub294 \uc815\uc218 0, 1, 2, -1 \ub85c \ub098\ud0c0\ub0b4\uba70 0 \uc740 \ub2e8\uc704\ub3c4\ub85c\uac00 \uc774\ubbf8 \uc874\uc7ac\ud558\ub294 \uac83\uc744, \uc989, \ub3c4\ub85c\uc5d0 \uc720\uc2e4\uc774 \uc5c6\ub294 \uc0c1\ud0dc, 1 \uc740 \ub2e8\uc704 \ub3c4\ub85c\uac00 \uc5c6\uace0 1 \uc758 \ube44\uc6a9\uc73c\ub85c \ub3c4\ub85c\ub97c \uac74\uc124\ud560 \uc218 \uc788\ub294 \ub2e8\uc704 \uaca9\uc790, 2 \ub294 \ub2e8\uc704 \ub3c4\ub85c\uac00 \uc5c6\uace0 2 \uc758 \ube44\uc6a9\uc73c\ub85c \ub3c4\ub85c\ub97c \uac74\uc124\ud560 \uc218 \uc788\ub294 \ub2e8\uc704 \uaca9\uc790\ub97c \uc758\ubbf8\ud55c\ub2e4. -1 \uc740 X\ub85c \ud45c\uc2dc\ub41c \ub2e8\uc704 \uaca9\uc790\ub85c \uadf8 \uc704\uce58\uc5d0 \ub2e8\uc704 \ub3c4\ub85c\ub97c \uac74\uc124\ud560 \uc218 \uc5c6\ub294 \uc0c1\ud0dc\ub97c \uc758\ubbf8\ud55c\ub2e4.<\/p>\r\n","output":"<p>\ucd9c\ub825\uc740 \ud45c\uc900\ucd9c\ub825\uc744 \uc0ac\uc6a9\ud55c\ub2e4. \ub3c4\uc2dc\uc758 \ub9e8 \uc67c\ucabd \uc704 \ub2e8\uc704 \uaca9\uc790\uc5d0\uc11c \ub9e8 \uc624\ub978\ucabd \uc544\ub798 \ub2e8\uc704 \uaca9\uc790\ub85c \uac00\ub294 \uacbd\ub85c\ub97c \ub9cc\ub4e4\uae30 \uc704\ud574 \ud544\uc694\ud55c \ucd5c\uc18c\ud55c\uc758 \ub3c4\ub85c \uac74\uc124 \ube44\uc6a9\uc744 \ud55c \uc904\uc5d0 \ucd9c\ub825\ud55c\ub2e4. \ud574\ub2f9 \uacbd\ub85c\ub97c \uac74\uc124\ud560 \uc218 \uc5c6\uc744 \ub54c\ub294 -1 \uc744 \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n","hint":"","original":"1","problem_lang_code":"\ud55c\uad6d\uc5b4"},{"problem_id":"20046","problem_lang":"1","title":"Road Reconstruction","description":"<p>ICP(International Computational Plan) City is faced with natural disaster, flooding. A lot of its transportation roads are destructed because of the flooding. The city is planning to reconstruct its roads. To simplify the problem, the city is represented by a grid structure like the following figure. We call it as city grid. A unit grid cell with black color means a unit road. A unit grid cell with white color means an area where a unit road is destructed or where a unit road has not existed previously. A unit grid cell with X denotes an area where a road cannot be constructed.<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/df7d65d1-1d60-4456-9c6e-a6803e331039\/-\/preview\/\" style=\"width: 277px; height: 181px;\" \/><\/p>\r\n\r\n<p>We assume that cars in the city can go horizontally or vertically from a black colored cell to an adjacent black colored cell. For two grid cells <em>u<\/em> and <em>v<\/em> in the city grid, if a car can go from <em>u<\/em> to <em>v<\/em> and the both cells are black colored, then <em>u<\/em> and <em>v<\/em> are called <em>connected<\/em>. ICP city is planning to reconstruct its transportation roads by connecting grid cells from the upper and leftmost grid to the lower and rightmost one with minimum construction cost. We assume that it costs 1 or 2 for constructing a unit road. For the example above, the gray cells in the following figure show how to construct roads that connect the upper and leftmost grid cell with the lower and rightmost one by the minimum construction cost 4. We assume that it costs 1 for constructing a unit road on the white cells in the figure. Note that it costs 1 or 2 for constructing a unit road in general case.<\/p>\r\n\r\n<p style=\"text-align: center;\"><img alt=\"\" src=\"https:\/\/upload.acmicpc.net\/d9529215-aabf-4b65-875a-94bd6752386c\/-\/preview\/\" style=\"width: 273px; height: 179px;\" \/><\/p>\r\n\r\n<p>Given a city grid, write a program to compute the minimum construction cost that connects roads from the upper and leftmost grid cell to the lower and rightmost one.<\/p>\r\n","input":"<p>Your program is to read from standard input. The input starts with a line containing two integers, <em>m<\/em> and <em>n<\/em> (1 &le; <em>m<\/em> &le; 1,000, 1 &le; <em>n<\/em> &le; 1,000), where <em>m<\/em> and <em>n<\/em> denote the numbers of rows and columns of the grid that represent the city, respectively. In the following <em>m<\/em> lines, the <em>i<\/em>-th line contains <em>n<\/em> integers that represent states of unit grid cells in the <em>i<\/em>-th row of the city grid. Each state is represented by using four numbers 0, 1, 2, and -1. The number 0 indicates that the current unit grid cell is a unit road, that is, an undamaged road. The numbers 1 and 2 indicate that the current unit grid cell is empty and a unit road is constructible with the costs 1 and 2, respectively. The number -1 indicates that the current unit grid cell cannot be used for constructing a road.<\/p>\r\n","output":"<p>Your program is to write to standard output. Print exactly one line. The line should contain the minimum construction cost that connects roads from the upper and leftmost unit grid cell to the lower and rightmost unit one. When it is impossible to connect roads from the upper and leftmost unit grid cell to the lower and rightmost one, the program should print out -1 on the line.<\/p>\r\n","hint":"","original":"0","problem_lang_code":"\uc601\uc5b4"}]