Spot the Difference

AtCoder

IDabc351_b

Time2000ms

Memory256MB

Difficulty—

You are given two grids, each with $N$ rows and $N$ columns, referred to as grid $A$ and grid $B$. Each cell in the grids contains a lowercase English letter. The character at the $i$\-th row and $j$\-th column of grid $A$ is $A_{i, j}$. The character at the $i$\-th row and $j$\-th column of grid $B$ is $B_{i, j}$. The two grids differ in exactly one cell. That is, there exists exactly one pair $(i, j)$ of positive integers not greater than $N$ such that $A_{i, j} \neq B_{i, j}$. Find this $(i, j)$. ## Constraints * $1 \leq N \leq 100$ * $A_{i, j}$ and $B_{i, j}$ are all lowercase English letters. * There exists exactly one pair $(i, j)$ such that $A_{i, j} \neq B_{i, j}$. ## Input The input is given from Standard Input in the following format: $N$ $A_{1,1}A_{1,2}\dots A_{1,N}$ $A_{2,1}A_{2,2}\dots A_{2,N}$ $\vdots$ $A_{N,1}A_{N,2}\dots A_{N,N}$ $B_{1,1}B_{1,2}\dots B_{1,N}$ $B_{2,1}B_{2,2}\dots B_{2,N}$ $\vdots$ $B_{N,1}B_{N,2}\dots B_{N,N}$ [samples]

Samples

Input #1

3
abc
def
ghi
abc
bef
ghi

Output #1

2 1

From $A_{2, 1} =$ `d` and $B_{2, 1} =$ `b`, we have $A_{2, 1} \neq B_{2, 1}$, so $(i, j) = (2, 1)$ satisfies the condition in the problem statement.

Input #2

1
f
q

Output #2

1 1

Input #3

10
eixfumagit
vtophbepfe
pxbfgsqcug
ugpugtsxzq
bvfhxyehfk
uqyfwtmglr
jaitenfqiq
acwvufpfvv
jhaddglpva
aacxsyqvoj
eixfumagit
vtophbepfe
pxbfgsqcug
ugpugtsxzq
bvfhxyehok
uqyfwtmglr
jaitenfqiq
acwvufpfvv
jhaddglpva
aacxsyqvoj

Output #3

5 9

API Response (JSON)

{
  "problem": {
    "name": "Spot the Difference",
    "description": {
      "content": "You are given two grids, each with $N$ rows and $N$ columns, referred to as grid $A$ and grid $B$.   Each cell in the grids contains a lowercase English letter.   The character at the $i$\\-th row and ",
      "description_type": "Markdown"
    },
    "platform": "AtCoder",
    "limit": {
      "time_limit": 2000,
      "memory_limit": 262144
    },
    "difficulty": "None",
    "is_remote": true,
    "is_sync": true,
    "sync_url": null,
    "sign": "abc351_b"
  },
  "statements": [
    {
      "statement_type": "Markdown",
      "content": "You are given two grids, each with $N$ rows and $N$ columns, referred to as grid $A$ and grid $B$.  \nEach cell in the grids contains a lowercase English letter.  \nThe character at the $i$\\-th row and ...",
      "is_translate": false,
      "language": "English"
    }
  ]
}

Full JSON Raw Segments